Update README.md

Bump version to 0.5.0

.azure/azure-pipelines.yml

@@ -1,6 +1,3 @@
-variables:
-  lkg-rust-nightly: "2019-08-08"
-
 trigger:
   - master
 
@@ -8,13 +5,25 @@ strategy:
   matrix:
     linux-nightly:
       image: ubuntu-16.04
-      toolchain: nightly-$(lkg-rust-nightly)
+      style: 'unflagged'
     macos-nightly:
-      image: macos-10.13
-      toolchain: nightly-$(lkg-rust-nightly)
+      image: macos-10.14
+      style: 'unflagged'
     windows-nightly:
       image: vs2017-win2016
-      toolchain: nightly-$(lkg-rust-nightly)
+      style: 'unflagged'
+    linux-nightly-canary:
+      image: ubuntu-16.04
+      style: 'canary'
+    macos-nightly-canary:
+      image: macos-10.14
+      style: 'canary'
+    windows-nightly-canary:
+      image: vs2017-win2016
+      style: 'canary'
+    fmt:
+      image: ubuntu-16.04
+      style: 'fmt'
 
 pool:
   vmImage: $(image)
@@ -22,14 +31,22 @@ pool:
 steps:
   - bash: |
       set -e
-      curl https://sh.rustup.rs -sSf | sh -s -- -y --no-modify-path --default-toolchain none
+      if [ -e /etc/debian_version ]
+      then
+        sudo apt-get -y install libxcb-composite0-dev libx11-dev
+      fi
+      curl https://sh.rustup.rs -sSf | sh -s -- -y --no-modify-path --default-toolchain `cat rust-toolchain`
       export PATH=$HOME/.cargo/bin:$PATH
-      rustup install --no-self-update $(toolchain)
-      rustup default $(toolchain)
       rustc -Vv
       echo "##vso[task.prependpath]$HOME/.cargo/bin"
+      rustup component add rustfmt --toolchain `cat rust-toolchain`
     displayName: Install Rust
-  - bash: RUSTFLAGS="-D warnings" cargo build
-    displayName: Build source
-  - bash: cargo test
+  - bash: RUSTFLAGS="-D warnings" cargo test --all-features
+    condition: eq(variables['style'], 'unflagged')
     displayName: Run tests
+  - bash: NUSHELL_ENABLE_ALL_FLAGS=1 RUSTFLAGS="-D warnings" cargo test --all-features
+    condition: eq(variables['style'], 'canary')
+    displayName: Run tests
+  - bash: cargo fmt --all -- --check
+    condition: eq(variables['style'], 'fmt')
+    displayName: Lint

.cargo/config

@@ -0,0 +1,3 @@
+[build]
+
+rustflags = "--cfg coloring_in_tokens"

.circleci/config.yml

@@ -0,0 +1,165 @@
+# CircleCI 2.0 configuration file
+#
+# Check https://circleci.com/docs/2.0/configuration-reference/ for more details
+# See https://circleci.com/docs/2.0/config-intro/#section=configuration for spec
+#
+version: 2.1
+
+# Commands
+
+commands:
+
+  pull_cache:
+    description: Pulls Quay.io docker images (latest) for our cache
+    parameters:
+      tag:
+        type: string
+        default: "devel"
+    steps:
+      - run: echo "Tag is << parameters.tag >>"
+      - run: docker pull quay.io/nushell/nu:<< parameters.tag >>
+      - run: docker pull quay.io/nushell/nu-base:<< parameters.tag >>
+
+orbs:
+  # https://circleci.com/orbs/registry/orb/circleci/docker
+  docker: circleci/docker@0.5.13
+
+workflows:
+  version: 2.0
+
+  # This builds on all pull requests to test, and ignores master
+  build_without_deploy:
+    jobs:
+      - docker/publish:
+          deploy: false
+          image: nushell/nu-base
+          tag: latest
+          dockerfile: docker/Dockerfile.nu-base
+          extra_build_args: --cache-from=quay.io/nushell/nu-base:devel
+          filters:
+            branches:
+              ignore: 
+                - master
+          before_build:
+            - pull_cache
+          after_build:
+            - run:
+                name: Build Multistage (smaller) container
+                command: |
+                  docker build -f docker/Dockerfile -t quay.io/nushell/nu .
+            - run:
+                name: Preview Docker Tag for Nushell Build
+                command: |
+                   DOCKER_TAG=$(docker run quay.io/nushell/nu --version | cut -d' ' -f2)
+                   echo "Version that would be used for Docker tag is v${DOCKER_TAG}"
+            - run:
+                name: Test Executable
+                command: |
+                   docker run --rm quay.io/nushell/nu-base --help
+                   docker run --rm quay.io/nushell/nu --help
+
+  # workflow publishes to Docker Hub, with each job having different triggers
+  build_with_deploy:
+    jobs:
+
+        # Deploy versioned and latest images on tags (releases) only - builds --release.
+      - docker/publish:
+          image: nushell/nu-base
+          registry: quay.io
+          tag: latest
+          dockerfile: docker/Dockerfile.nu-base
+          extra_build_args: --cache-from=quay.io/nushell/nu-base:latest,quay.io/nushell/nu:latest --build-arg RELEASE=true
+          filters:
+            branches:
+              ignore: /.*/
+            tags:
+              only: /^v.*/
+          before_build:
+            - run: docker pull quay.io/nushell/nu:latest
+            - run: docker pull quay.io/nushell/nu-base:latest
+          after_build:
+            - run:
+                name: Build Multistage (smaller) container
+                command: |
+                  docker build -f docker/Dockerfile -t quay.io/nushell/nu .
+            - run:
+                name: Test Executable
+                command: |
+                   docker run --rm quay.io/nushell/nu --help
+                   docker run --rm quay.io/nushell/nu-base --help
+            - run:
+                name: Publish Docker Tag with Nushell Version
+                command: |
+                   DOCKER_TAG=$(docker run quay.io/nushell/nu --version | cut -d' ' -f2)
+                   echo "Version for Docker tag is ${DOCKER_TAG}"
+                   docker tag quay.io/nushell/nu-base:latest quay.io/nushell/nu-base:${DOCKER_TAG}
+                   docker tag quay.io/nushell/nu:latest quay.io/nushell/nu:${DOCKER_TAG}
+                   docker push quay.io/nushell/nu-base
+                   docker push quay.io/nushell/nu
+
+
+  # publish devel to Docker Hub on merge to master (doesn't build --release)
+  build_with_deploy_devel:
+    jobs:
+
+      # Deploy devel tag on merge to master
+      - docker/publish:
+          image: nushell/nu-base
+          registry: quay.io
+          tag: devel
+          dockerfile: docker/Dockerfile.nu-base
+          extra_build_args: --cache-from=quay.io/nushell/nu-base:devel
+          before_build:
+            - pull_cache
+          filters:
+            branches:
+              only: master
+          after_build:
+            - run:
+                name: Build Multistage (smaller) container
+                command: |
+                  docker build --build-arg FROMTAG=devel -f docker/Dockerfile -t quay.io/nushell/nu:devel .
+            - run:
+                name: Test Executable
+                command: |
+                   docker run --rm quay.io/nushell/nu:devel --help
+                   docker run --rm quay.io/nushell/nu-base:devel --help
+            - run:
+                name: Publish Development Docker Tags
+                command: |
+                   docker push quay.io/nushell/nu-base:devel
+                   docker push quay.io/nushell/nu:devel
+
+  nightly:
+    triggers:
+      - schedule:
+          cron: "0 0 * * *"
+          filters:
+            branches:
+              only:
+                - master
+    jobs:
+      - docker/publish:
+          image: nushell/nu-base
+          registry: quay.io
+          tag: nightly
+          dockerfile: docker/Dockerfile.nu-base
+          extra_build_args: --cache-from=quay.io/nushell/nu-base:nightly --build-arg RELEASE=true
+          before_build:
+            - run: docker pull quay.io/nushell/nu:nightly
+            - run: docker pull quay.io/nushell/nu-base:nightly
+          after_build:
+            - run:
+                name: Build Multistage (smaller) container
+                command: |
+                  docker build -f docker/Dockerfile -t quay.io/nushell/nu:nightly .
+            - run:
+                name: Test Executable
+                command: |
+                   docker run --rm quay.io/nushell/nu:nightly --help
+                   docker run --rm quay.io/nushell/nu-base:nightly --help
+            - run:
+                name: Publish Nightly Nushell Containers
+                command: |
+                   docker push quay.io/nushell/nu-base:nightly
+                   docker push quay.io/nushell/nu:nightly

.editorconfig

@@ -4,6 +4,11 @@ root = true
 indent_style = space
 indent_size = 4
 charset = utf-8
-trim_trailing_whitespace = false
+trim_trailing_whitespace = true
 insert_final_newline = false
 end_of_line = lf
+
+[*.{yml,yaml}]
+indent_size = 2
+charset = utf-8
+insert_final_newline = true

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,30 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. 
+2. 
+3. 
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Configuration (please complete the following information):**
+ - OS: [e.g. Windows]
+ - Version [e.g. 0.4.0]
+ - Optional features (if any)
+
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/docker-publish.yml

@@ -0,0 +1,98 @@
+name: Publish consumable Docker images
+
+on:
+  push:
+    tags: ['*.*.*']
+
+jobs:
+  compile:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        arch:
+        - x86_64-unknown-linux-musl
+        - x86_64-unknown-linux-gnu
+    steps:
+    - uses: actions/checkout@v1
+    - run: cargo install cross
+    - name: compile for specific target
+      env: { arch: '${{ matrix.arch }}' }
+      run: |
+        cross build --target ${{ matrix.arch }} --release
+        # leave only the executable file
+        rm -rd target/${{ matrix.arch }}/release/{*/*,*.d,*.rlib,.fingerprint}
+        find . -empty -delete
+    - uses: actions/upload-artifact@master
+      with:
+        name: ${{ matrix.arch }}
+        path: target/${{ matrix.arch }}/release
+
+  docker:
+    name: Build and publish docker images
+    needs: compile
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        tag:
+        - alpine
+        - slim
+        - debian
+        - glibc-busybox
+        - musl-busybox
+        - musl-distroless
+        - glibc-distroless
+        - glibc
+        - musl
+        include:
+        - { tag: alpine,           base-image: alpine,                     arch: x86_64-unknown-linux-musl, plugin: true    }
+        - { tag: slim,             base-image: 'debian:stable-slim',       arch: x86_64-unknown-linux-gnu,  plugin: true    }
+        - { tag: debian,           base-image: debian,                     arch: x86_64-unknown-linux-gnu,  plugin: true    }
+        - { tag: glibc-busybox,    base-image: 'busybox:glibc',            arch: x86_64-unknown-linux-gnu,  use-patch: true }
+        - { tag: musl-busybox,     base-image: 'busybox:musl',             arch: x86_64-unknown-linux-musl,                 }
+        - { tag: musl-distroless,  base-image: 'gcr.io/distroless/static', arch: x86_64-unknown-linux-musl,                 }
+        - { tag: glibc-distroless, base-image: 'gcr.io/distroless/cc',     arch: x86_64-unknown-linux-gnu,  use-patch: true }
+        - { tag: glibc,            base-image: scratch,                    arch: x86_64-unknown-linux-gnu,                  }
+        - { tag: musl,             base-image: scratch,                    arch: x86_64-unknown-linux-musl,                 }
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/download-artifact@master
+      with: { name: '${{ matrix.arch }}', path: target/release }
+    - name: Build and publish exact version
+      run: |
+        REGISTRY=${REGISTRY,,}; export TAG=${GITHUB_REF##*/}-${{ matrix.tag }};
+        export NU_BINS=target/release/$( [ ${{ matrix.plugin }} = true ] && echo nu* || echo nu )
+        export PATCH=$([ ${{ matrix.use-patch }} = true ] && echo .${{ matrix.tag }} || echo '')
+        chmod +x $NU_BINS
+
+        echo ${{ secrets.DOCKER_REGISTRY }} | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
+        docker-compose --file docker/docker-compose.package.yml build
+        docker-compose --file docker/docker-compose.package.yml push              # exact version
+      env:
+        BASE_IMAGE: ${{ matrix.base-image }}
+        REGISTRY: docker.pkg.github.com/${{ github.repository }}
+
+    #region semantics tagging
+    - name: Retag and push without suffixing version
+      run: |
+        VERSION=${GITHUB_REF##*/}
+        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${{ matrix.tag }}
+        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION%%.*}-${{ matrix.tag }}
+        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION%.*}-${{ matrix.tag }}
+        docker push ${REGISTRY,,}/nu:${VERSION%.*}-${{ matrix.tag }}              # latest patch
+        docker push ${REGISTRY,,}/nu:${VERSION%%.*}-${{ matrix.tag }}             # latest features
+        docker push ${REGISTRY,,}/nu:${{ matrix.tag }}                            # latest version
+      env: { REGISTRY: 'docker.pkg.github.com/${{ github.repository }}' }
+    - name: Retag and push debian as latest
+      if: matrix.tag == 'debian'
+      run: |
+        VERSION=${GITHUB_REF##*/}
+        docker tag ${REGISTRY,,}/nu:${{ matrix.tag }} ${REGISTRY,,}/nu:latest
+        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION%.*}
+        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION%%.*}
+        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION}
+        docker push ${REGISTRY,,}/nu:${VERSION}       # exact version
+        docker push ${REGISTRY,,}/nu:${VERSION%%.*}   # latest features
+        docker push ${REGISTRY,,}/nu:${VERSION%.*}    # latest patch
+        docker push ${REGISTRY,,}/nu:latest           # latest version
+      env: { REGISTRY: 'docker.pkg.github.com/${{ github.repository }}' }
+    #endregion semantics tagging

.gitignore

@@ -1,4 +1,12 @@
 /target
+/scratch
 **/*.rs.bk
 history.txt
 tests/fixtures/nuplayground
+
+# Debian/Ubuntu
+debian/.debhelper/
+debian/debhelper-build-stamp
+debian/files
+debian/nu.substvars
+debian/nu/

.gitpod.Dockerfile

@@ -0,0 +1,7 @@
+FROM gitpod/workspace-full
+USER root
+RUN apt-get update && apt-get install -y libssl-dev \
+    libxcb-composite0-dev \
+    pkg-config \
+    curl \
+    rustc

.gitpod.yml

@@ -0,0 +1,21 @@
+image:
+  file: .gitpod.Dockerfile
+tasks:
+  - init: cargo install --path .
+    command: nu
+github:
+  prebuilds:
+    # enable for the master/default branch (defaults to true)
+    master: true
+    # enable for all branches in this repo (defaults to false)
+    branches: true
+    # enable for pull requests coming from this repo (defaults to true)
+    pullRequests: true
+    # enable for pull requests coming from forks (defaults to false)
+    pullRequestsFromForks: true
+    # add a "Review in Gitpod" button as a comment to pull requests (defaults to true)
+    addComment: true
+    # add a "Review in Gitpod" button to pull requests (defaults to false)
+    addBadge: false
+    # add a label once the prebuild is ready to pull requests (defaults to false)
+    addLabel: prebuilt-in-gitpod

CODE_OF_CONDUCT.md

@@ -0,0 +1,76 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to make participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, and it also applies when
+an individual is representing the project or its community in public spaces.
+Examples of representing a project or community include using an official
+project e-mail address, posting via an official social media account, or acting
+as an appointed representative at an online or offline event. Representation of
+a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at wycats@gmail.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "nu"
-version = "0.2.0"
+version = "0.5.0"
 authors = ["Yehuda Katz <wycats@gmail.com>", "Jonathan Turner <jonathan.d.turner@gmail.com>", "Andrés N. Robalino <andres@androbtech.com>"]
 description = "A shell for the GitHub era"
 license = "MIT"
@@ -8,89 +8,106 @@ edition = "2018"
 readme = "README.md"
 default-run = "nu"
 repository = "https://github.com/nushell/nushell"
-homepage = "http://nushell.sh"
+homepage = "https://www.nushell.sh"
 documentation = "https://book.nushell.sh"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rustyline = "5.0.2"
-sysinfo = "0.9"
-chrono = { version = "0.4.7", features = ["serde"] }
-chrono-tz = "0.5.1"
-derive-new = "0.5.7"
+rustyline = "5.0.4"
+chrono = { version = "0.4.9", features = ["serde"] }
+derive-new = "0.5.8"
 prettytable-rs = "0.8.0"
 itertools = "0.8.0"
-ansi_term = "0.12.0"
+ansi_term = "0.12.1"
 nom = "5.0.0"
 dunce = "1.0.0"
-indexmap = { version = "1.0.2", features = ["serde-1"] }
+indexmap = { version = "1.2.0", features = ["serde-1"] }
 chrono-humanize = "0.0.11"
 byte-unit = "3.0.1"
-ordered-float = {version = "1.0.2", features = ["serde"]}
-prettyprint = "0.7.0"
+base64 = "0.10.1"
 futures-preview = { version = "=0.3.0-alpha.18", features = ["compat", "io-compat"] }
-futures-sink-preview = "=0.3.0-alpha.18"
-futures-async-stream = "0.1.0-alpha.1"
-async-trait = "0.1.10"
+async-stream = "0.1.1"
 futures_codec = "0.2.5"
+num-traits = "0.2.8"
 term = "0.5.2"
 bytes = "0.4.12"
 log = "0.4.8"
 pretty_env_logger = "0.3.1"
-serde = { version = "1.0.98", features = ["derive"] }
+serde = { version = "1.0.100", features = ["derive"] }
+bson = { version = "0.14.0", features = ["decimal128"] }
 serde_json = "1.0.40"
 serde-hjson = "0.9.1"
 serde_yaml = "0.8"
 serde_bytes = "0.11.2"
-getset = "0.0.7"
-logos = "0.10.0-rc2"
-logos-derive = "0.10.0-rc2"
-language-reporting = "0.3.1"
+getset = "0.0.8"
+language-reporting = "0.4.0"
 app_dirs = "1.2.1"
 csv = "1.1"
 toml = "0.5.3"
-toml-query = "0.9.2"
 clap = "2.33.0"
-enum_derive = "0.1.7"
-adhoc_derive = "0.1.2"
-lazy_static = "1.3.0"
-git2 = { version = "0.9.2", default_features = false }
+git2 = { version = "0.10.1", default_features = false }
 dirs = "2.0.2"
 glob = "0.3.0"
 ctrlc = "3.1.3"
-ptree = "0.2"
-reqwest = "0.9"
+surf = "1.0.2"
+url = "2.1.0"
 roxmltree = "0.7.0"
-nom5_locate = "0.1.1"
-derive_more = "0.15.0"
-enum-utils = "0.1.1"
+nom_locate = "1.0.0"
+nom-tracable = "0.4.0"
 unicode-xid = "0.2.0"
 serde_ini = "0.2.0"
 subprocess = "0.1.18"
-mime = "0.3.13"
-regex = "1.2.1"
+mime = "0.3.14"
 pretty-hex = "0.1.0"
-neso = "0.5.0"
-crossterm = "0.10.2"
+hex = "0.3.2"
 tempfile = "3.1.0"
-image = "0.22.1"
 semver = "0.9.0"
-uuid = {version = "0.7.4", features = [ "v4", "serde" ]}
-syntect = "3.2.0"
-strip-ansi-escapes = "0.1.0"
-onig_sys = "=69.1.0"
-heim = "0.0.6"
 which = "2.0.1"
-battery = "0.7.4"
 textwrap = {version = "0.11.0", features = ["term_size"]}
-unicode-width = "0.1.6"
+shellexpand = "1.0.0"
+futures-timer = "0.4.0"
+pin-utils = "0.1.0-alpha.4"
+num-bigint = { version = "0.2.3", features = ["serde"] }
+bigdecimal = { version = "0.1.0", features = ["serde"] }
+natural = "0.3.0"
+serde_urlencoded = "0.6.1"
+sublime_fuzzy = "0.5"
+trash = "1.0.0"
+regex = "1"
+cfg-if = "0.1"
+
+neso = { version = "0.5.0", optional = true }
+crossterm = { version = "0.10.2", optional = true }
+syntect = {version = "3.2.0", optional = true }
+onig_sys = {version = "=69.1.0", optional = true }
+heim = {version = "0.0.8", optional = true }
+battery = {version = "0.7.4", optional = true }
 rawkey = {version = "0.1.2", optional = true }
 clipboard = {version = "0.5", optional = true }
+ptree = {version = "0.2" }
+image = { version = "0.22.2", default_features = false, features = ["png_codec", "jpeg"], optional = true }
+
+[features]
+default = ["textview", "sys", "ps"]
+raw-key = ["rawkey", "neso"]
+textview = ["syntect", "onig_sys", "crossterm"]
+binaryview = ["image", "crossterm"]
+sys = ["heim", "battery"]
+ps = ["heim"]
+# trace = ["nom-tracable/trace"]
+all = ["raw-key", "textview", "binaryview", "sys", "ps", "clipboard"]
+
+[dependencies.rusqlite]
+version = "0.20.0"
+features = ["bundled", "blob"]
 
 [dev-dependencies]
 pretty_assertions = "0.6.1"
-tempdir = "0.3.7"
+
+[build-dependencies]
+toml = "0.5.3"
+serde = { version = "1.0.101", features = ["derive"] }
 
 [lib]
 name = "nu"
@@ -105,13 +122,25 @@ name = "nu_plugin_sum"
 path = "src/plugins/sum.rs"
 
 [[bin]]
-name = "nu_plugin_add"
-path = "src/plugins/add.rs"
+name = "nu_plugin_average"
+path = "src/plugins/average.rs"
+
+[[bin]]
+name = "nu_plugin_embed"
+path = "src/plugins/embed.rs"
+
+[[bin]]
+name = "nu_plugin_insert"
+path = "src/plugins/insert.rs"
 
 [[bin]]
 name = "nu_plugin_edit"
 path = "src/plugins/edit.rs"
 
+[[bin]]
+name = "nu_plugin_read"
+path = "src/plugins/read.rs"
+
 [[bin]]
 name = "nu_plugin_str"
 path = "src/plugins/str.rs"
@@ -120,21 +149,40 @@ path = "src/plugins/str.rs"
 name = "nu_plugin_skip"
 path = "src/plugins/skip.rs"
 
+[[bin]]
+name = "nu_plugin_match"
+path = "src/plugins/match.rs"
+required-features = ["regex"]
+
 [[bin]]
 name = "nu_plugin_sys"
 path = "src/plugins/sys.rs"
+required-features = ["sys"]
+
+[[bin]]
+name = "nu_plugin_ps"
+path = "src/plugins/ps.rs"
+required-features = ["ps"]
 
 [[bin]]
 name = "nu_plugin_tree"
 path = "src/plugins/tree.rs"
+required-features = ["tree"]
 
 [[bin]]
 name = "nu_plugin_binaryview"
 path = "src/plugins/binaryview.rs"
+required-features = ["binaryview"]
 
 [[bin]]
 name = "nu_plugin_textview"
 path = "src/plugins/textview.rs"
+required-features = ["textview"]
+
+[[bin]]
+name = "nu_plugin_docker"
+path = "src/plugins/docker.rs"
+required-features = ["docker"]
 
 [[bin]]
 name = "nu"

README.md

@@ -1,78 +1,135 @@
-[![Build Status](https://dev.azure.com/nushell/nushell/_apis/build/status/nushell.nushell?branchName=master)](https://dev.azure.com/nushell/nushell/_build/latest?definitionId=2&branchName=master) [![Discord](https://img.shields.io/discord/601130461678272522.svg?logo=discord)](https://discord.gg/NtAbbGn)
+[![Crates.io](https://img.shields.io/crates/v/nu.svg)](https://crates.io/crates/nu)
+[![Build Status](https://dev.azure.com/nushell/nushell/_apis/build/status/nushell.nushell?branchName=master)](https://dev.azure.com/nushell/nushell/_build/latest?definitionId=2&branchName=master)
+[![Discord](https://img.shields.io/discord/601130461678272522.svg?logo=discord)](https://discord.gg/NtAbbGn)
+[![The Changelog #363](https://img.shields.io/badge/The%20Changelog-%23363-61c192.svg)](https://changelog.com/podcast/363)
+
 
 # Nu Shell
 
-A modern, GitHub-era shell written in Rust
+A modern shell for the GitHub era.
 
-![Example of nushell](images/nushell-autocomplete4.gif "Example of nushell")
+![Example of nushell](images/nushell-autocomplete.gif "Example of nushell")
 
 # Status
 
-This project has reached a minimum-viable product level of quality. While contributors dogfood it as their daily driver, it may be instable for some commands. Future releases will work fill out missing features and improve stability. Its design is also subject to change as it matures.
+This project has reached a minimum-viable product level of quality. While contributors dogfood it as their daily driver, it may be unstable for some commands. Future releases will work to fill out missing features and improve stability. Its design is also subject to change as it matures.
 
-Nu comes with a set of built-in commands (listed below). If a command is unknown, the command will shell-out and execute it (using cmd on Windows or bash on Linux and MacOS), correctly passing through stdin, stdout and stderr, so things like your daily git workflows and even `vim` will work just fine.
+Nu comes with a set of built-in commands (listed below). If a command is unknown, the command will shell-out and execute it (using cmd on Windows or bash on Linux and macOS), correctly passing through stdin, stdout, and stderr, so things like your daily git workflows and even `vim` will work just fine.
 
-There is also a [book](https://book.nushell.sh) about Nu, currently in progress.
+# Learning more
+
+There are a few good resources to learn about Nu. There is a [book](https://book.nushell.sh) about Nu that is currently in progress. The book focuses on using Nu and its core concepts.
+
+If you're a developer who would like to contribute to Nu, we're also working on a [book for developers](https://github.com/nushell/contributor-book/tree/master/en) to help you get started. There are also [good first issues](https://github.com/nushell/nushell/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22) to help you dive in.
+
+We also have an active [Discord](https://discord.gg/NtAbbGn) and [Twitter](https://twitter.com/nu_shell) if you'd like to come and chat with us.
+
+Try it in Gitpod.
+
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/nushell/nushell)
 
 # Installation
 
-Up-to-date installation instructions can be found in the [installation chapter of the book](https://book.nushell.sh/en/installation).
+## Local
+
+Up-to-date installation instructions can be found in the [installation chapter of the book](https://book.nushell.sh/en/installation).  **Windows users**: please note that Nu works on Windows 10 and does not currently have Windows 7/8.1 support.
+
+To build Nu, you will need to use the **beta** version of the compiler.
 
 Required dependencies:
 
-* libssl
-  * on macOS (via homebrew): `brew install openssl`
-  * on Linux (on Debian/Ubuntu): `apt install libssl-dev`
+* pkg-config and libssl (only needed on Linux)
+  * on Debian/Ubuntu: `apt install pkg-config libssl-dev`
 
 Optional dependencies:
 
 * To use Nu with all possible optional features enabled, you'll also need the following:
   * on Linux (on Debian/Ubuntu): `apt install libxcb-composite0-dev libx11-dev`
 
-To install Nu via cargo:
+To install Nu via cargo (make sure you have installed [rustup](https://rustup.rs/) and the beta compiler via `rustup install beta`):
 
 ```
-cargo install nu
+cargo +beta install nu
 ```
 
-You can also install Nu with all the bells and whistles:
+You can also install Nu with all the bells and whistles (be sure to have installed the [dependencies](https://book.nushell.sh/en/installation#dependencies) for your platform):
 
 ```
-cargo install nu --features rawkey,clipboard
+cargo +beta install nu --all-features
 ```
 
-The following optional features are currently supported:
+## Docker
 
-* **rawkey** - direct keyboard input, which creates a smoother experience in viewing text and binaries
-* **clipboard** - integration with the native clipboard via the `clip` command
+If you want to pull a pre-built container, you can browse tags for the [nushell organization](https://quay.io/organization/nushell)
+on Quay.io. Pulling a container would come down to:
+
+```bash
+$ docker pull quay.io/nushell/nu
+$ docker pull quay.io/nushell/nu-base
+```
+
+Both "nu-base" and "nu" provide the nu binary, however nu-base also includes the source code at `/code`
+in the container and all dependencies.
+
+Optionally, you can also build the containers locally using the [dockerfiles provided](docker):
+To build the base image:
+
+```bash
+$ docker build -f docker/Dockerfile.nu-base -t nushell/nu-base .
+```
+
+And then to build the smaller container (using a Multistage build):
+
+```bash
+$ docker build -f docker/Dockerfile -t nushell/nu .
+```
+
+Either way, you can run either container as follows:
+
+```bash
+$ docker run -it nushell/nu-base
+$ docker run -it nushell/nu
+/> exit
+```
+
+The second container is a bit smaller if the size is important to you.
+
+## Packaging status
+
+[![Packaging status](https://repology.org/badge/vertical-allrepos/nushell.svg)](https://repology.org/project/nushell/versions)
+
+### Fedora
+
+[COPR repo](https://copr.fedorainfracloud.org/coprs/atim/nushell/): `sudo dnf copr enable atim/nushell -y && sudo dnf install nushell -y`
 
 # Philosophy
 
-Nu draws inspiration from projects like PowerShell, functional programming languages, and modern cli tools. Rather than thinking of files and services as raw streams of text, Nu looks at each input as something with structure. For example, when you list the contents of a directory, what you get back in a list of objects, where each object represents an item in that directory. These values can be piped through a series of steps, in a series of commands called a 'pipeline'.
+Nu draws inspiration from projects like PowerShell, functional programming languages, and modern CLI tools. Rather than thinking of files and services as raw streams of text, Nu looks at each input as something with structure. For example, when you list the contents of a directory, what you get back is a table of rows, where each row represents an item in that directory. These values can be piped through a series of steps, in a series of commands called a 'pipeline'.
 
 ## Pipelines
 
-In Unix, it's common to pipe between commands to split up a sophisticated command over multiple steps. Nu takes this a step further and builds heavily on the idea of _pipelines_. Just as the Unix philosophy, Nu allows commands to output from stdout and read from stdin. Additionally, commands can output structured data (you can think of this as a third kind of stream). Commands that work in the pipeline fit into one of three categories
+In Unix, it's common to pipe between commands to split up a sophisticated command over multiple steps. Nu takes this a step further and builds heavily on the idea of _pipelines_. Just as the Unix philosophy, Nu allows commands to output from stdout and read from stdin. Additionally, commands can output structured data (you can think of this as a third kind of stream). Commands that work in the pipeline fit into one of three categories:
 
 * Commands that produce a stream (eg, `ls`)
 * Commands that filter a stream (eg, `where type == "Directory"`)
-* Commands that consumes the output of the pipeline (eg, `autoview`)
+* Commands that consume the output of the pipeline (eg, `autoview`)
 
 Commands are separated by the pipe symbol (`|`) to denote a pipeline flowing left to right.
 
 ```
 /home/jonathan/Source/nushell(master)> ls | where type == "Directory" | autoview
---------+-----------+----------+--------+--------------+----------------
- name   | type      | readonly | size   | accessed     | modified
---------+-----------+----------+--------+--------------+----------------
- target | Directory |          | 4.1 KB | 19 hours ago | 19 hours ago
- images | Directory |          | 4.1 KB | 2 weeks ago  | a week ago
- tests  | Directory |          | 4.1 KB | 2 weeks ago  | 18 minutes ago
- docs   | Directory |          | 4.1 KB | a week ago   | a week ago
- .git   | Directory |          | 4.1 KB | 2 weeks ago  | 25 minutes ago
- src    | Directory |          | 4.1 KB | 2 weeks ago  | 25 minutes ago
- .cargo | Directory |          | 4.1 KB | 2 weeks ago  | 2 weeks ago
------------+-----------+----------+--------+--------------+----------------
+━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ #  │ name      │ type      │ readonly │ size   │ accessed     │ modified
+────┼───────────┼───────────┼──────────┼────────┼──────────────┼────────────────
+  0 │ .azure    │ Directory │          │ 4.1 KB │ 2 months ago │ a day ago
+  1 │ target    │ Directory │          │ 4.1 KB │ 3 days ago   │ 3 days ago
+  2 │ images    │ Directory │          │ 4.1 KB │ 2 months ago │ 2 weeks ago
+  3 │ tests     │ Directory │          │ 4.1 KB │ 2 months ago │ 37 minutes ago
+  4 │ tmp       │ Directory │          │ 4.1 KB │ 2 weeks ago  │ 2 weeks ago
+  5 │ src       │ Directory │          │ 4.1 KB │ 2 months ago │ 37 minutes ago
+  6 │ assets    │ Directory │          │ 4.1 KB │ a month ago  │ a month ago
+  7 │ docs      │ Directory │          │ 4.1 KB │ 2 months ago │ 2 months ago
+━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
 ```
 
 Because most of the time you'll want to see the output of a pipeline, `autoview` is assumed. We could have also written the above:
@@ -84,15 +141,16 @@ Because most of the time you'll want to see the output of a pipeline, `autoview`
 Being able to use the same commands and compose them differently is an important philosophy in Nu. For example, we could use the built-in `ps` command as well to get a list of the running processes, using the same `where` as above.
 
 ```text
-C:\Code\nushell(master)> ps | where cpu > 0
------------------- +-----+-------+-------+----------
- name              | cmd | cpu   | pid   | status
------------------- +-----+-------+-------+----------
- msedge.exe        |  -  | 0.77  | 26472 | Runnable
- nu.exe            |  -  | 7.83  | 15473 | Runnable
- SearchIndexer.exe |  -  | 82.17 | 23476 | Runnable
- BlueJeans.exe     |  -  | 4.54  | 10000 | Runnable
--------------------+-----+-------+-------+----------
+/home/jonathan/Source/nushell(master)> ps | where cpu > 0
+━━━┯━━━━━━━┯━━━━━━━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━━━
+ # │ pid   │ name            │ status   │ cpu
+───┼───────┼─────────────────┼──────────┼──────────
+ 0 │   992 │ chrome          │ Sleeping │ 6.988768
+ 1 │  4240 │ chrome          │ Sleeping │ 5.645982
+ 2 │ 13973 │ qemu-system-x86 │ Sleeping │ 4.996551
+ 3 │ 15746 │ nu              │ Sleeping │ 84.59905
+━━━┷━━━━━━━┷━━━━━━━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━━━
+
 ```
 
 ## Opening files
@@ -101,36 +159,36 @@ Nu can load file and URL contents as raw text or as structured data (if it recog
 
 ```
 /home/jonathan/Source/nushell(master)> open Cargo.toml
------------------+------------------+-----------------
- dependencies    | dev-dependencies | package
------------------+------------------+-----------------
- [object Object] | [object Object]  | [object Object]
------------------+------------------+-----------------
+━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━
+ bin              │ dependencies   │ dev-dependencies
+──────────────────┼────────────────┼──────────────────
+ [table: 12 rows] │ [table: 1 row] │ [table: 1 row]
+━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━
 ```
 
 We can pipeline this into a command that gets the contents of one of the columns:
 
 ```
 /home/jonathan/Source/nushell(master)> open Cargo.toml | get package
--------------+----------------------------+---------+---------+------+---------
- authors     | description                | edition | license | name | version
--------------+----------------------------+---------+---------+------+---------
- [list List] | A shell for the GitHub era | 2018    | MIT     | nu   | 0.2.0
--------------+----------------------------+---------+---------+------+---------
+━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━┯━━━━━━━━━┯━━━━━━┯━━━━━━━━━
+ authors         │ description                │ edition │ license │ name │ version
+─────────────────┼────────────────────────────┼─────────┼─────────┼──────┼─────────
+ [table: 3 rows] │ A shell for the GitHub era │ 2018    │ MIT     │ nu   │ 0.5.0
+━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━┷━━━━━━━━━┷━━━━━━┷━━━━━━━━━
 ```
 
 Finally, we can use commands outside of Nu once we have the data we want:
 
 ```
 /home/jonathan/Source/nushell(master)> open Cargo.toml | get package.version | echo $it
-0.2.0
+0.5.0
 ```
 
 Here we use the variable `$it` to refer to the value being piped to the external command.
 
 ## Shells
 
-By default, Nu will work inside of a single directory and allow you to navigate around your filesystem. Sometimes, you'll want to work in multiple directories at the same time. For this, Nu offers a way of adding additional working directories that you can jump between. 
+Nu will work inside of a single directory and allow you to navigate around your filesystem by default. Nu also offers a way of adding additional working directories that you can jump between, allowing you to work in multiple directories at the same time.
 
 To do so, use the `enter` command, which will allow you create a new "shell" and enter it at the specified path. You can toggle between this new shell and the original shell with the `p` (for previous) and `n` (for next), allowing you to navigate around a ring buffer of shells. Once you're done with a shell, you can `exit` it and remove it from the ring buffer.
 
@@ -138,11 +196,11 @@ Finally, to get a list of all the current shells, you can use the `shells` comma
 
 ## Plugins
 
-Nu supports plugins that offer additional functionality to the shell and follow the same object model that built-in commands use. This allows you to extend nu for your needs.
+Nu supports plugins that offer additional functionality to the shell and follow the same structured data model that built-in commands use. This allows you to extend nu for your needs.
 
 There are a few examples in the `plugins` directory.
 
-Plugins are binaries that are available in your path and follow a "nu_plugin_*" naming convention. These binaries interact with nu via a simple JSON-RPC protocol where the command identifies itself and passes along its configuration, which then makes it available for use. If the plugin is a filter, data streams to it one element at a time, and it can stream data back in return via stdin/stdout. If the plugin is a sink, it is given the full vector of final data and is given free reign over stdin/stdout to use as it pleases.
+Plugins are binaries that are available in your path and follow a `nu_plugin_*` naming convention. These binaries interact with nu via a simple JSON-RPC protocol where the command identifies itself and passes along its configuration, which then makes it available for use. If the plugin is a filter, data streams to it one element at a time, and it can stream data back in return via stdin/stdout. If the plugin is a sink, it is given the full vector of final data and is given free reign over stdin/stdout to use as it pleases.
 
 # Goals
 
@@ -154,9 +212,9 @@ Nu adheres closely to a set of goals that make up its design philosophy. As feat
 
 * Nu's workflow and tools should have the usability in day-to-day experience of using a shell in 2019 (and beyond).
 
-* Nu views data as both structured and unstructured. It is an object shell like PowerShell.
+* Nu views data as both structured and unstructured. It is a structured shell like PowerShell.
 
-* Finally, Nu views data functionally. Rather than using mutation, pipelines act as a mean to load, change, and save data without mutable state.
+* Finally, Nu views data functionally. Rather than using mutation, pipelines act as a means to load, change, and save data without mutable state.
 
 # Commands
 ## Initial commands
@@ -164,14 +222,23 @@ Nu adheres closely to a set of goals that make up its design philosophy. As feat
 | ------------- | ------------- |
 | cd path | Change to a new path |
 | cp source path | Copy files |
+| date (--utc) | Get the current datetime |
+| fetch url | Fetch contents from a url and retrieve data as a table if possible |
+| help | Display help information about commands |
 | ls (path) | View the contents of the current or given path |
 | mkdir path | Make directories, creates intermediary directories as required. |
 | mv source target | Move files or directories. |
-| date (--utc) | Get the current datetime |
+| open filename | Load a file into a cell, convert to table if possible (avoid by appending '--raw') |
+| post url body (--user <user>) (--password <password>) | Post content to a url and retrieve data as a table if possible |
 | ps | View current processes |
 | sys | View information about the current system |
-| open {filename or url} | Load a file into a cell, convert to table if possible (avoid by appending '--raw') |
+| which filename | Finds a program file. |
 | rm   {file or directory} | Remove a file, (for removing directory append '--recursive') |
+| version | Display Nu version |
+
+## Shell commands
+| command | description |
+| ------- | ----------- |
 | exit (--now) | Exit the current shell (or all shells) |
 | enter (path) | Create a new shell and begin at this path |
 | p | Go to previous shell |
@@ -181,39 +248,56 @@ Nu adheres closely to a set of goals that make up its design philosophy. As feat
 ## Filters on tables (structured data)
 | command | description |
 | ------------- | ------------- |
-| pick ...columns | Down-select table to only these columns |
-| reject ...columns | Remove the given columns from the table |
-| get column-or-column-path | Open given cells as text |
-| sort-by ...columns | Sort by the given columns |
-| where condition | Filter table to match the condition |
-| inc (field) | Increment a value or version. Optional use the field of a table |
-| add field value | Add a new field to the table |
-| sum | Sum a column of values |
-| edit field value | Edit an existing field to have a new value |
-| skip amount | Skip a number of rows |
+| append row-data | Append a row to the end of the table |
+| count | Show the total number of rows |
+| edit column-or-column-path value | Edit an existing column to have a new value |
+| embed column | Creates a new table of one column with the given name, and places the current table inside of it |
 | first amount | Show only the first number of rows |
+| get column-or-column-path | Open column and get data from the corresponding cells |
+| group-by column | Creates a new table with the data from the table rows grouped by the column given |
+| inc (column-or-column-path) | Increment a value or version. Optionally use the column of a table |
+| insert column-or-column-path value | Insert a new column to the table |
+| last amount | Show only the last number of rows |
 | nth row-number | Return only the selected row |
-| str (field) | Apply string function. Optional use the field of a table |
+| pick ...columns | Down-select table to only these columns |
+| pivot --header-row <headers> | Pivot the tables, making columns into rows and vice versa |
+| prepend row-data | Prepend a row to the beginning of the table |
+| reject ...columns | Remove the given columns from the table |
+| reverse | Reverses the table. |
+| skip amount | Skip a number of rows |
+| skip-while condition | Skips rows while the condition matches. |
+| sort-by ...columns | Sort by the given columns |
+| str (column) | Apply string function. Optionally use the column of a table |
+| sum | Sum a column of values |
 | tags | Read the tags (metadata) for values |
-| from-array | Expand an array/list into rows |
-| to-array | Collapse rows into a single list |
-| to-json | Convert table into .json text |
-| to-toml | Convert table into .toml text |
-| to-yaml | Convert table into .yaml text |
+| to-bson | Convert table into .bson binary data |
 | to-csv | Convert table into .csv text |
+| to-json | Convert table into .json text |
+| to-sqlite | Convert table to sqlite .db binary data |
+| to-toml | Convert table into .toml text |
+| to-tsv | Convert table into .tsv text |
+| to-url | Convert table to a urlencoded string |
+| to-yaml | Convert table into .yaml text |
+| where condition | Filter table to match the condition |
 
 ## Filters on text (unstructured data)
 | command | description |
 | ------------- | ------------- |
+| from-bson | Parse binary data as .bson and create table |
 | from-csv | Parse text as .csv and create table |
 | from-ini | Parse text as .ini and create table |
 | from-json | Parse text as .json and create table |
+| from-sqlite | Parse binary data as sqlite .db and create table |
+| from-ssv --minimum-spaces <minimum number of spaces to count as a separator> | Parse text as space-separated values and create table |
 | from-toml | Parse text as .toml and create table |
+| from-tsv  | Parse text as .tsv and create table  |
+| from-url | Parse urlencoded string and create a table |
 | from-xml | Parse text as .xml and create a table |
 | from-yaml | Parse text as a .yaml/.yml and create a table |
 | lines | Split single string into rows, one per line |
+| read pattern | Convert text to a table by matching the given pattern |
 | size | Gather word count statistics on the text |
-| split-column sep ...fields | Split row contents across multiple columns via the separator |
+| split-column sep ...column-names | Split row contents across multiple columns via the separator, optionally give the columns names |
 | split-row sep | Split row contents over multiple rows via the separator |
 | trim | Trim leading and following whitespace from text data |
 | {external-command} $it | Run external command with given arguments, replacing $it with each row text |
@@ -222,13 +306,12 @@ Nu adheres closely to a set of goals that make up its design philosophy. As feat
 | command | description |
 | ------------- | ------------- |
 | autoview | View the contents of the pipeline as a table or list |
-| binaryview | Autoview of binary data |
-| clip | Copy the contents of the pipeline to the copy/paste buffer |
+| binaryview | Autoview of binary data (optional feature) |
+| clip | Copy the contents of the pipeline to the copy/paste buffer (optional feature) |
 | save filename | Save the contents of the pipeline to a file |
 | table | View the contents of the pipeline as a table |
 | textview | Autoview of text data |
-| tree | View the contents of the pipeline as a tree |
-| vtable | View the contents of the pipeline as a vertical (rotated) table |
+| tree | View the contents of the pipeline as a tree (optional feature) |
 
 # License
 

build.rs

@@ -0,0 +1,39 @@
+use serde::Deserialize;
+use std::collections::HashMap;
+use std::collections::HashSet;
+use std::env;
+use std::path::Path;
+
+#[derive(Deserialize)]
+struct Feature {
+    #[allow(unused)]
+    description: String,
+    enabled: bool,
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let input = env::var("CARGO_MANIFEST_DIR").unwrap();
+    let all_on = env::var("NUSHELL_ENABLE_ALL_FLAGS").is_ok();
+    let flags: HashSet<String> = env::var("NUSHELL_ENABLE_FLAGS")
+        .map(|s| s.split(",").map(|s| s.to_string()).collect())
+        .unwrap_or_else(|_| HashSet::new());
+
+    if all_on && !flags.is_empty() {
+        println!(
+            "cargo:warning={}",
+            "Both NUSHELL_ENABLE_ALL_FLAGS and NUSHELL_ENABLE_FLAGS were set. You don't need both."
+        );
+    }
+
+    let path = Path::new(&input).join("features.toml");
+
+    let toml: HashMap<String, Feature> = toml::from_str(&std::fs::read_to_string(path)?)?;
+
+    for (key, value) in toml.iter() {
+        if value.enabled == true || all_on || flags.contains(key) {
+            println!("cargo:rustc-cfg={}", key);
+        }
+    }
+
+    Ok(())
+}

debian/changelog

@@ -0,0 +1,5 @@
+nu (0.2.0-1) unstable; urgency=low
+
+  * Initial release
+
+ -- Jan Koprowski <jan.koprowski@gmail.com>  Wed, 04 Sep 2019 21:38:44 +0200

debian/compat

@@ -0,0 +1 @@
+10

debian/control

@@ -0,0 +1,18 @@
+Source: nu
+Section: shells
+Priority: optional
+Maintainer: Jan Koprowski <jan.koprowski@gmail.com>
+Build-Depends: debhelper (>= 10)
+Standards-Version: 4.1.2
+Homepage: https://github.com/nushell/nushell
+Vcs-Git: https://github.com/nushell/nushell.git
+Vcs-Browser: https://github.com/nushell/nushell
+
+Package: nu
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: A modern shell for the GitHub era
+ The goal of this project is to take the Unix
+ philosophy of shells, where pipes connect simple
+ commands together, and bring it to the modern
+ style of development.

debian/copyright

@@ -0,0 +1,32 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: nu
+Source: https://github.com/nushell/nushell
+
+Files: *
+Copyright: 2019 Yehuda Katz
+           2019 Jonathan Turner
+License: MIT
+
+Files: debian/*
+Copyright: 2019 Yehuda Katz
+           2019 Jonathan Turner
+License: MIT
+
+License: MIT
+ Permission is hereby granted, free of charge, to any person obtaining a
+ copy of this software and associated documentation files (the "Software"),
+ to deal in the Software without restriction, including without limitation
+ the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ and/or sell copies of the Software, and to permit persons to whom the
+ Software is furnished to do so, subject to the following conditions:
+ .
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+ .
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

debian/install

@@ -0,0 +1,11 @@
+target/release/nu usr/bin
+target/release/nu_plugin_binaryview usr/bin
+target/release/nu_plugin_edit       usr/bin
+target/release/nu_plugin_inc        usr/bin
+target/release/nu_plugin_skip       usr/bin
+target/release/nu_plugin_str        usr/bin
+target/release/nu_plugin_sum        usr/bin
+target/release/nu_plugin_sys        usr/bin
+target/release/nu_plugin_textview   usr/bin
+target/release/nu_plugin_tree       usr/bin
+target/release/nu_plugin_docker       usr/bin

debian/postinst

@@ -0,0 +1,8 @@
+#! /bin/bash
+
+if [ "$1" = configure ] && which add-shell >/dev/null
+then
+    add-shell /usr/bin/nu
+fi
+
+exit 0

debian/postrm

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+set -e
+
+case "$1" in
+    upgrade|failed-upgrade|abort-install|abort-upgrade)
+	;;
+    remove|purge|disappear)
+	if which remove-shell >/dev/null && [ -f /etc/shells ]; then
+	    remove-shell /usr/bin/nu
+	fi
+	;;
+    *)
+        echo "postrm called with unknown argument \`$1'" >&2
+        exit 1
+	;;
+esac

debian/rules

@@ -0,0 +1,25 @@
+#!/usr/bin/make -f
+# See debhelper(7) (uncomment to enable)
+# output every command that modifies files on the build system.
+#export DH_VERBOSE = 1
+
+
+# see FEATURE AREAS in dpkg-buildflags(1)
+#export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+
+# see ENVIRONMENT in dpkg-buildflags(1)
+# package maintainers to append CFLAGS
+#export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
+# package maintainers to append LDFLAGS
+#export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
+
+
+%:
+	dh $@
+
+
+# dh_make generated override targets
+# This is example for Cmake (See https://bugs.debian.org/641051 )
+#override_dh_auto_configure:
+#	dh_auto_configure -- #	-DCMAKE_LIBRARY_PATH=$(DEB_HOST_MULTIARCH)
+

debian/source/format

@@ -0,0 +1 @@
+3.0 (quilt)

docker/Dockerfile

@@ -0,0 +1,9 @@
+ARG FROMTAG=latest
+FROM quay.io/nushell/nu-base:${FROMTAG} as base
+FROM ubuntu:18.04
+COPY --from=base /usr/local/bin/nu /usr/local/bin/nu
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update && apt-get install -y libssl-dev \
+    pkg-config
+ENTRYPOINT ["nu"]
+CMD ["-l", "info"]

docker/Dockerfile.nu-base

@@ -0,0 +1,25 @@
+FROM ubuntu:18.04
+
+# docker build -f docker/Dockerfile.nu-base -t nushell/nu-base .
+# docker run -it nushell/nu-base
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update && apt-get install -y libssl-dev \
+    libxcb-composite0-dev \
+    pkg-config \
+    curl
+
+ARG RELEASE=false
+WORKDIR /code
+COPY ./rust-toolchain ./rust-toolchain
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --no-modify-path --default-toolchain `cat rust-toolchain`
+ENV PATH=/root/.cargo/bin:$PATH
+COPY . /code
+RUN echo "##vso[task.prependpath]/root/.cargo/bin" && \
+    rustc -Vv && \
+    if $RELEASE; then cargo build --release; \
+                   cp target/release/nu /usr/local/bin; \   
+                 else cargo build; \
+                   cp target/debug/nu /usr/local/bin; fi;
+ENTRYPOINT ["nu"]
+CMD ["-l", "info"]

docker/Package.Dockerfile

@@ -0,0 +1,7 @@
+ARG base
+FROM ${base}
+
+ARG artifact
+COPY ${artifact} /bin/
+
+ENTRYPOINT ["/bin/nu"]

docker/Package.glibc-busybox.Dockerfile

@@ -0,0 +1,15 @@
+ARG base
+FROM debian:stable-slim AS patch
+FROM ${base}
+
+ARG artifact
+COPY ${artifact} /bin/
+
+COPY --from=patch                       \
+    /lib/x86_64-linux-gnu/libz.so.1     \
+    /lib/x86_64-linux-gnu/libdl.so.2    \
+    /lib/x86_64-linux-gnu/librt.so.1    \
+    /lib/x86_64-linux-gnu/libgcc_s.so.1 \
+    /lib/x86_64-linux-gnu/
+
+ENTRYPOINT ["/bin/nu"]

docker/Package.glibc-distroless.Dockerfile

@@ -0,0 +1,12 @@
+ARG base
+FROM debian:stable-slim AS patch
+FROM ${base}
+
+ARG artifact
+COPY ${artifact} /bin/
+
+COPY --from=patch                   \
+    /lib/x86_64-linux-gnu/libz.so.1 \
+    /lib/x86_64-linux-gnu/
+
+ENTRYPOINT ["/bin/nu"]

docker/docker-compose.package.yml

@@ -0,0 +1,11 @@
+version: '3'
+
+services:
+  nushell:
+    image: ${REGISTRY}/nu:${TAG}
+    build:
+      context: ..
+      dockerfile: docker/Package${PATCH}.Dockerfile
+      args:
+        base: ${BASE_IMAGE}
+        artifact: ${NU_BINS}

docker/packaging/Dockerfile.ubuntu-bionic

@@ -0,0 +1,17 @@
+# docker build -f docker/packaging/Dockerfile.ubuntu-bionic .
+
+ARG FROMTAG=latest
+FROM quay.io/nushell/nu-base:${FROMTAG}
+
+RUN apt-get update && apt-get install -y \
+    devscripts \
+    debhelper
+
+COPY debian /code/debian
+
+RUN rustc -Vv && cargo build --release && \
+    cp README.md debian/README.Debian && \
+    debuild -b -us -uc -i && \
+    dpkg -i ../nu_0.2.0-1_amd64.deb && \
+    chsh -s /usr/bin/nu && \
+    echo 'ls | get name | echo $it' | /usr/bin/nu

docker/packaging/README.md

@@ -0,0 +1,55 @@
+# Packaging
+
+This directory contains docker images used for creating packages for different distribution.
+
+##  How to use this docker files?
+
+Start with:
+
+```bash
+$ docker build -f docker/packaging/Dockerfile.ubuntu-bionic -t nushell/package:ubuntu-bionic .
+```
+
+after building the image please run container:
+
+```bash
+$ docker run -td --rm --name nushell_package_ubuntu_bionic nushell/package:ubuntu-bionic
+``` 
+
+and copy deb package from inside:
+
+```bash
+$ docker cp nushell_package_ubuntu_bionic:/nu_0.2.0-1_amd64.deb .
+```
+
+or shell inside, and test install:
+
+```bash
+$ docker exec -it nushell_package_ubuntu_bionic bash
+$ dpkg -i /nu_0.2.0-1_amd64.deb
+
+(Reading database ... 25656 files and directories currently installed.)
+Preparing to unpack /nu_0.2.0-1_amd64.deb ...
+Unpacking nu (0.2.0-1) over (0.2.0-1) ...
+Setting up nu (0.2.0-1) ...
+```
+
+When you are finished, exit and stop the container. It will be removed since we
+used `--rm`.
+
+```bash
+$ docker stop nushell_package_ubuntu_bionic
+```
+
+## What should be done
+
+* We should run sbuild command to create chroot and then install dpkg.
+For two reasons. First: we want to use the same tools as Ubuntu package builders
+to handle the cornercases. Second: we want to test dpkg requirements.
+https://github.com/nushell/nushell/issues/681
+
+* File debian/changelog file should be generated based on git history.
+https://github.com/nushell/nushell/issues/682
+
+* Building package and nu version should be parametrized.
+https://github.com/nushell/nushell/issues/683

docs/commands/README.md

@@ -0,0 +1,25 @@
+# How do I get started?
+
+Pick any command from the checklist and write a comment acknowledging you started work.
+
+# Instructions for documenting a Nu command of your choosing
+
+Name the file after the command, like so:
+
+`command.md`
+
+Example: If you want to add documentation for the Nu command `enter`, create a file named `enter.md`, write documentation, save it at `/docs/commands/[your_command_picked].md` as  and create your pull request.
+
+# What kind of documentation should I write?
+
+Anything you want that you believe it *best* documents the command and the way you would like to see it. Here are some of our ideas of documentation we would *love* to see (feel free to add yours):
+
+* Examples of using the command (max creativity welcomed!)
+* Description of the command.
+* Command usage.
+
+# Anything else?
+
+Of course! (These are drafts) so feel free to leave feedback and suggestions in the same file.
+
+Happy Documenting.

docs/commands/add.md

@@ -0,0 +1,28 @@
+# add
+
+This command adds a column to any table output. The first parameter takes the heading, the second parameter takes the value for all the rows.
+
+## Examples
+
+```shell
+> ls | add is_on_a_computer yes_obviously
+━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━
+ # │ name                       │ type │ readonly │ size   │ accessed  │ modified  │ is_on_a_computer 
+───┼────────────────────────────┼──────┼──────────┼────────┼───────────┼───────────┼──────────────────
+ 0 │ zeusiscrazy.txt            │ File │          │ 556 B  │ a day ago │ a day ago │ yes_obviously 
+ 1 │ coww.txt                   │ File │          │  24 B  │ a day ago │ a day ago │ yes_obviously 
+ 2 │ randomweirdstuff.txt       │ File │          │ 197 B  │ a day ago │ a day ago │ yes_obviously 
+ 3 │ abaracadabra.txt           │ File │          │ 401 B  │ a day ago │ a day ago │ yes_obviously 
+ 4 │ youshouldeatmorecereal.txt │ File │          │ 768 B  │ a day ago │ a day ago │ yes_obviously 
+━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━
+```
+
+```shell
+> shells | add os linux_on_this_machine
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path                           │ os 
+───┼───┼────────────┼────────────────────────────────┼───────────────────────
+ 0 │ X │ filesystem │ /home/shaurya/stuff/expr/stuff │ linux_on_this_machine 
+ 1 │   │ filesystem │ /                              │ linux_on_this_machine 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━
+```

docs/commands/average.md

@@ -0,0 +1,45 @@
+# average 
+This command allows you to calculate the average of values in a column.  
+
+## Examples 
+To get the average of the file sizes in a directory, simply pipe the size column from the ls command to the average command.
+
+```shell
+> ls | get size | average
+━━━━━━━━━
+ <value>
+━━━━━━━━━
+2282.727272727273
+━━━━━━━━━
+```
+
+```shell
+> pwd | split-row / | size | get chars | average
+━━━━━━━━━
+ <value>
+━━━━━━━━━
+5.250000000000000
+━━━━━━━━━
+```
+
+Note that average only works for integer and byte values. If the shell doesn't recognize the values in a column as one of those types, it will return an error.
+One way to solve this is to convert each row to an integer when possible and then pipe the result to `average`
+
+```shell
+> open tests/fixtures/formats/caco3_plastics.csv | get tariff_item | average
+error: Unrecognized type in stream: Primitive(String("2509000000"))
+- shell:1:0
+1 | open tests/fixtures/formats/caco3_plastics.csv | get tariff_item | average
+  | ^^^^ source
+```
+
+```shell
+> open tests/fixtures/formats/caco3_plastics.csv | get tariff_item | str --to-int | average
+━━━━━━━━━━━━━━━━━━━
+ <value>
+───────────────────
+ 3239404444.000000
+━━━━━━━━━━━━━━━━━━━
+```
+
+

docs/commands/cd.md

@@ -0,0 +1,33 @@
+# cd
+
+If you didn't already know, the `cd` command is very simple. It stands for 'change directory' and it does exactly that. It changes the current directory to the one specified. If no directory is specified, it takes you to the home directory. Additionally, using `cd ..` takes you to the parent directory.
+
+## Examples
+
+```shell
+/home/username> cd Desktop
+/home/username/Desktop> now your current directory has been changed
+```
+
+```shell
+/home/username/Desktop/nested/folders> cd ..
+/home/username/Desktop/nested> cd ..
+/home/username/Desktop> cd ../Documents/school_related
+/home/username/Documents/school_related> cd ../../..
+/home/>
+```
+
+```shell
+/home/username/Desktop/super/duper/crazy/nested/folders> cd
+/home/username> cd ../../usr
+/usr> cd
+/home/username>
+```
+
+Using `cd -` will take you to the previous directory:
+
+```shell
+/home/username/Desktop/super/duper/crazy/nested/folders> cd
+/home/username> cd -
+/home/username/Desktop/super/duper/crazy/nested/folders> cd
+```

docs/commands/date.md

@@ -0,0 +1,34 @@
+# date
+
+Use `date` to get the current date and time. Defaults to local timezone but you can get it in UTC too.
+
+## Flags
+
+    --utc
+      Returns the current date and time in UTC
+
+    --local
+      Returns the current date and time in your local timezone
+
+## Examples
+
+```shell
+> date
+━━━━━━┯━━━━━━━┯━━━━━┯━━━━━━┯━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━
+ year │ month │ day │ hour │ minute │ second │ timezone
+──────┼───────┼─────┼──────┼────────┼────────┼──────────
+ 2019 │     9 │  30 │   21 │     52 │     30 │ -03:00
+━━━━━━┷━━━━━━━┷━━━━━┷━━━━━━┷━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━
+> date --utc
+━━━━━━┯━━━━━━━┯━━━━━┯━━━━━━┯━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━
+ year │ month │ day │ hour │ minute │ second │ timezone
+──────┼───────┼─────┼──────┼────────┼────────┼──────────
+ 2019 │    10 │   1 │    0 │     52 │     32 │ UTC
+━━━━━━┷━━━━━━━┷━━━━━┷━━━━━━┷━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━
+> date --local
+━━━━━━┯━━━━━━━┯━━━━━┯━━━━━━┯━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━
+ year │ month │ day │ hour │ minute │ second │ timezone
+──────┼───────┼─────┼──────┼────────┼────────┼──────────
+ 2019 │     9 │  30 │   21 │     52 │     34 │ -03:00
+━━━━━━┷━━━━━━━┷━━━━━┷━━━━━━┷━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━
+```

docs/commands/echo.md

@@ -0,0 +1,12 @@
+# echo
+
+Use `echo` to repeat arguments back to the user
+
+## Examples
+
+```shell
+> echo Hello world
+Hello world
+> echo "Hello, world!"
+Hello, world!
+```

docs/commands/edit.md

@@ -0,0 +1,45 @@
+# edit
+
+Edits an existing column on a table. First parameter is the column to edit and the second parameter is the value to put.
+
+## Examples 
+
+```shell
+> ls
+━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━
+ # │ name                       │ type │ readonly │ size   │ accessed  │ modified 
+───┼────────────────────────────┼──────┼──────────┼────────┼───────────┼───────────
+ 0 │ zeusiscrazy.txt            │ File │          │ 556 B  │ a day ago │ a day ago 
+ 1 │ coww.txt                   │ File │          │  24 B  │ a day ago │ a day ago 
+ 2 │ randomweirdstuff.txt       │ File │          │ 197 B  │ a day ago │ a day ago 
+ 3 │ abaracadabra.txt           │ File │          │ 401 B  │ a day ago │ a day ago 
+ 4 │ youshouldeatmorecereal.txt │ File │          │ 768 B  │ a day ago │ a day ago 
+━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━
+> ls | edit modified neverrrr
+━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━
+ # │ name                       │ type │ readonly │ size   │ accessed  │ modified 
+───┼────────────────────────────┼──────┼──────────┼────────┼───────────┼──────────
+ 0 │ zeusiscrazy.txt            │ File │          │ 556 B  │ a day ago │ neverrrr 
+ 1 │ coww.txt                   │ File │          │  24 B  │ a day ago │ neverrrr 
+ 2 │ randomweirdstuff.txt       │ File │          │ 197 B  │ a day ago │ neverrrr 
+ 3 │ abaracadabra.txt           │ File │          │ 401 B  │ a day ago │ neverrrr 
+ 4 │ youshouldeatmorecereal.txt │ File │          │ 768 B  │ a day ago │ neverrrr 
+━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━
+```
+
+```shell
+> shells
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path 
+───┼───┼────────────┼────────────────────────────────
+ 0 │ X │ filesystem │ /home/username/stuff/expr/stuff 
+ 1 │   │ filesystem │ / 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | edit " " X | edit path / 
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━
+ # │   │ name       │ path 
+───┼───┼────────────┼──────
+ 0 │ X │ filesystem │ / 
+ 1 │ X │ filesystem │ / 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━
+```

docs/commands/enter.md

@@ -0,0 +1,39 @@
+# enter
+
+This command creates a new shell and begin at this path.
+
+## Examples
+
+```shell
+/home/foobar> cat user.json
+{
+	"Name": "Peter",
+	"Age": 30,
+	"Telephone": 88204828,
+	"Country": "Singapore"
+}
+/home/foobar> enter user.json
+/> ls
+━━━━━━━┯━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━
+ Name  │ Age │ Telephone │ Country
+───────┼─────┼───────────┼───────────
+ Peter │  30 │  88204828 │ Singapore
+━━━━━━━┷━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━
+/> exit
+/home/foobar>
+```
+
+It also provides the ability to work with multiple directories at the same time. This command will allow you to create a new "shell" and enter it at the specified path. You can toggle between this new shell and the original shell with the `p` (for previous) and `n` (for next), allowing you to navigate around a ring buffer of shells. Once you're done with a shell, you can `exit` it and remove it from the ring buffer.
+
+```shell
+/> enter /tmp
+/tmp> enter /usr
+/usr> enter /bin
+/bin> enter /opt
+/opt> p
+/bin> p
+/usr> p
+/tmp> p
+/> n
+/tmp>
+```

docs/commands/env.md

@@ -0,0 +1,27 @@
+# env
+
+The `env` command prints to terminal the environment of nushell
+
+This includes 
+- cwd     : the path to the current working the directory (`cwd`), 
+- home    : the path to the home directory
+- config  : the path to the config file for nushell
+- history : the path to the nushell command history
+- temp 	  : the path to the temp file
+- vars    : descriptor variable for the table 
+
+`env` does not take any arguments, and ignores any arguments given.
+
+
+## Examples -
+
+
+```shell
+/home/username/mynushell/docs/commands(master)> env
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━━━━━━━
+ cwd                                    │ home           │ config                                │ history                                    │ temp │ vars 
+────────────────────────────────────────┼────────────────┼───────────────────────────────────────┼────────────────────────────────────────────┼──────┼────────────────
+ /home/username/mynushell/docs/commands │ /home/username │ /home/username/.config/nu/config.toml │ /home/username/.local/share/nu/history.txt │ /tmp │ [table: 1 row] 
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━━━━━━━
+```
+

docs/commands/exit.md

@@ -0,0 +1,30 @@
+# exit
+
+Exits the nu shell. If you have multiple nu shells, use `exit --now` to exit all of them.
+
+## Examples 
+
+```shell
+> exit
+```
+
+```
+/home/username/stuff/books> shells
+---+---+------------+----------------------------
+ # |   | name       | path 
+---+---+------------+----------------------------
+ 0 |   | filesystem | /home/username/stuff/notes 
+ 1 |   | filesystem | /home/username/stuff/videos 
+ 2 | X | filesystem | /home/username/stuff/books 
+---+---+------------+----------------------------
+/home/username/stuff/books> exit
+/home/username/stuff/videos> shells
+---+---+------------+----------------------------
+ # |   | name       | path 
+---+---+------------+----------------------------
+ 0 |   | filesystem | /home/username/stuff/notes 
+ 1 | X | filesystem | /home/username/stuff/videos 
+---+---+------------+----------------------------
+/home/username/stuff/videos> exit --now
+exits both the shells
+```

docs/commands/fetch.md

@@ -0,0 +1,32 @@
+# fetch
+
+This command loads from a URL into a cell, convert it to table if possible (avoid by appending `--raw` flag)
+
+## Examples
+
+```shell
+> fetch http://headers.jsontest.com
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━
+ X-Cloud-Trace-Context                                 │ Accept │ Host                 │ Content-Length │ user-agent
+───────────────────────────────────────────────────────┼────────┼──────────────────────┼────────────────┼─────────────────────────
+ aeee1a8abf08820f6fe19d114dc3bb87/16772233176633589121 │ */*    │ headers.jsontest.com │ 0              │ curl/7.54.0 isahc/0.7.1
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━
+> fetch http://headers.jsontest.com --raw
+{
+   "X-Cloud-Trace-Context": "aeee1a8abf08820f6fe19d114dc3bb87/16772233176633589121",
+   "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3",
+   "Upgrade-Insecure-Requests": "1",
+   "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36",
+   "Host": "headers.jsontest.com",
+   "Accept-Language": "en-GB,en-US;q=0.9,en;q=0.8"
+}
+```
+
+```shell
+> fetch https://www.jonathanturner.org/feed.xml
+━━━━━━━━━━━━━━━━
+ rss
+────────────────
+ [table: 1 row]
+━━━━━━━━━━━━━━━━
+```

docs/commands/first.md

@@ -0,0 +1,28 @@
+# first
+
+Use `first` to retrieve the first "n" rows of a table. `first` has a required amount parameter that indicates how many rows you would like returned. If more than one row is returned, an index column will be included showing the row number.
+
+## Examples
+
+```shell
+> ps | first 1
+━━━━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━
+ pid   │ name         │ status  │ cpu
+───────┼──────────────┼─────────┼───────────────────
+ 60358 │ nu_plugin_ps │ Running │ 5.399802999999999
+━━━━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━
+```
+
+```shell
+> ps | first 5
+━━━┯━━━━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━
+ # │ pid   │ name         │ status  │ cpu
+───┼───────┼──────────────┼─────────┼───────────────────
+ 0 │ 60754 │ nu_plugin_ps │ Running │ 4.024156000000000
+ 1 │ 60107 │ quicklookd   │ Running │ 0.000000000000000
+ 2 │ 59356 │ nu           │ Running │ 0.000000000000000
+ 3 │ 59216 │ zsh          │ Running │ 0.000000000000000
+ 4 │ 59162 │ vim          │ Running │ 0.000000000000000
+━━━┷━━━━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━
+```
+

docs/commands/from-csv.md

@@ -0,0 +1,47 @@
+# from-csv
+
+Converts csv data into table. Use this when nushell cannot dertermine the input file extension.
+
+## Example
+Let's say we have the following file :
+```shell
+> cat pets.txt
+animal, name, age
+cat, Tom, 7
+dog, Alfred, 10
+chameleon, Linda, 1
+```
+
+`pets.txt` is actually a .csv file but it has the .txt extension, `open` is not able to convert it into a table :
+
+```shell
+> open pets.txt
+animal, name, age
+cat, Tom, 7
+dog, Alfred, 10
+chameleon, Linda, 1
+```
+
+To get a table from `pets.txt` we need to use the `from-csv` command :
+
+```shell
+> open pets.txt | from-csv
+━━━┯━━━━━━━━━━━┯━━━━━━━━━┯━━━━━━
+ # │ animal    │  name   │  age
+───┼───────────┼─────────┼──────
+ 0 │ cat       │  Tom    │  7
+ 1 │ dog       │  Alfred │  10
+ 2 │ chameleon │  Linda  │  1
+━━━┷━━━━━━━━━━━┷━━━━━━━━━┷━━━━━━
+```
+
+To ignore the csv headers use `--headerless` :
+```shell
+━━━┯━━━━━━━━━━━┯━━━━━━━━━┯━━━━━━━━━
+ # │ Column1   │ Column2 │ Column3
+───┼───────────┼─────────┼─────────
+ 0 │ dog       │  Alfred │  10
+ 1 │ chameleon │  Linda  │  1
+━━━┷━━━━━━━━━━━┷━━━━━━━━━┷━━━━━━━━━
+```
+

docs/commands/from-toml.md

@@ -0,0 +1,23 @@
+# from-toml
+Converts toml data into table. Use this when nushell cannot dertermine the input file extension.
+
+## Example
+Let's say we have the following Rust .lock file :
+```shell
+> open Cargo.lock
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.                                   [[package]]                                                                name = "adler32"                                                           version = "1.0.3"                                                          source = "registry+https://github.com/rust-lang/crates.io-index"
+...
+```
+
+The "Cargo.lock" file is actually a .toml file, but the file extension isn't .toml. That's okay, we can use the `from-toml` command :
+
+
+```shell
+> open Cargo.lock | from-toml
+━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━
+ metadata       │ package
+────────────────┼───────────────────
+ [table: 1 row] │ [table: 154 rows]
+━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━
+```

docs/commands/help.md

@@ -0,0 +1,47 @@
+# help
+
+Use `help` for more information on a command.
+Use `help commands` to list all availble commands.
+Use `help <command name>` to display help about a particular command.
+
+## Examples
+
+```shell
+> help
+Welcome to Nushell.
+
+Here are some tips to help you get started.
+  * help commands - list all available commands
+  * help <command name> - display help about a particular command
+
+You can also learn more at https://book.nushell.sh
+```
+
+```shell
+> help commands
+━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ #  │ name         │ description 
+────┼──────────────┼────────────────────────────────────────────────────────────────────────────────────────
+  0 │ add          │ Add a new field to the table. 
+  1 │ autoview     │ View the contents of the pipeline as a table or list. 
+  2 │ cd           │ Change to a new path. 
+  3 │ config       │ Configuration management. 
+  4 │ cp           │ Copy files. 
+  5 │ date         │ Get the current datetime. 
+...
+ 70 │ trim         │ Trim leading and following whitespace from text data. 
+ 71 │ version      │ Display Nu version 
+ 72 │ where        │ Filter table to match the condition. 
+ 73 │ which        │ Finds a program file. 
+━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+```
+
+```shell
+> help cd
+Change to a new path.
+
+Usage:
+  > cd (directory)
+```
+
+

docs/commands/inc.md

@@ -0,0 +1,31 @@
+# inc
+
+This command increments the value of variable by one.
+
+## Examples
+
+```shell
+> open rustfmt.toml
+---------
+ edition 
+---------
+ 2018 
+---------
+> open rustfmt.toml | inc edition
+---------
+ edition 
+---------
+ 2019 
+---------
+```
+
+```shell
+> open Cargo.toml | get package.version
+0.1.3
+> open Cargo.toml | inc package.version --major | get package.version
+1.0.0
+> open Cargo.toml | inc package.version --minor | get package.version
+0.2.0
+> open Cargo.toml | inc package.version --patch | get package.version
+0.1.4
+```

docs/commands/last.md

@@ -0,0 +1,29 @@
+# last
+
+Use `last` to retrieve the last "n" rows of a table. `last` has a required amount parameter that indicates how many rows you would like returned. If more than one row is returned, an index column will be included showing the row number. `last` does not alter the order of the rows of the table.
+
+## Examples
+
+```shell
+> ps | last 1
+━━━━━┯━━━━━━━━━━━━━┯━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━
+ pid │ name        │ status  │ cpu
+─────┼─────────────┼─────────┼───────────────────
+ 121 │ loginwindow │ Running │ 0.000000000000000
+━━━━━┷━━━━━━━━━━━━━┷━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━
+```
+
+```shell
+> ps | last 5
+━━━┯━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━
+ # │ pid │ name           │ status  │ cpu
+───┼─────┼────────────────┼─────────┼───────────────────
+ 0 │ 360 │ CommCenter     │ Running │ 0.000000000000000
+ 1 │ 358 │ distnoted      │ Running │ 0.000000000000000
+ 2 │ 356 │ UserEventAgent │ Running │ 0.000000000000000
+ 3 │ 354 │ cfprefsd       │ Running │ 0.000000000000000
+ 4 │ 121 │ loginwindow    │ Running │ 0.000000000000000
+━━━┷━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━
+```
+
+

docs/commands/lines.md

@@ -0,0 +1,28 @@
+# lines
+This command takes a string from a pipeline as input, and returns a table where each line of the input string is a row in the table. Empty lines are ignored. This command is capable of feeding other commands, such as `nth`, with its output.
+
+## Usage
+```shell
+> [input-command] | lines
+```
+
+## Examples 
+Basic usage:
+```shell
+> printf "Hello\nWorld!\nLove, nushell." | lines
+━━━┯━━━━━━━━━━━━━━━━
+ # │ value 
+───┼────────────────
+ 0 │ Hello 
+ 1 │ World! 
+ 2 │ Love, nushell. 
+━━━┷━━━━━━━━━━━━━━━━
+```
+
+One useful application is piping the contents of file into `lines`. This example extracts a certain line from a given file.
+```shell
+> cat lines.md | lines | nth 6
+## Examples
+```
+
+Similarly to this example, `lines` can be used to extract certain portions of or apply transformations to data returned by any program which returns a string.

docs/commands/nth.md

@@ -0,0 +1,31 @@
+# nth
+
+This command returns the nth row of a table, starting from 0.  
+If the number given is less than 0 or more than the number of rows, nothing is returned.
+
+## Usage
+```shell
+> [input-command] | nth [row-number]
+```
+
+## Examples
+```shell
+> ls
+━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━
+ # │ name       │ type      │ readonly │ size   │ accessed      │ modified 
+───┼────────────┼───────────┼──────────┼────────┼───────────────┼───────────────
+ 0 │ Cargo.toml │ File      │          │ 239 B  │ 2 minutes ago │ 2 minutes ago 
+ 1 │ .git       │ Directory │          │ 4.1 KB │ 2 minutes ago │ 2 minutes ago 
+ 2 │ .gitignore │ File      │          │  19 B  │ 2 minutes ago │ 2 minutes ago 
+ 3 │ src        │ Directory │          │ 4.1 KB │ 2 minutes ago │ 2 minutes ago 
+━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━
+
+> ls | nth 0
+━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━
+ name       │ type │ readonly │ size   │ accessed      │ modified 
+────────────┼──────┼──────────┼────────┼───────────────┼───────────────
+ Cargo.toml │ File │          │ 239 B  │ 2 minutes ago │ 2 minutes ago 
+━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━
+
+> ls | nth 5
+```

docs/commands/open.md

@@ -0,0 +1,95 @@
+# open
+
+Loads a file into a cell, convert it to table if possible (avoid by appending `--raw` flag)
+
+## Example
+
+```shell
+> cat user.yaml
+- Name: Peter
+  Age: 30
+  Telephone: 88204828
+  Country: Singapore
+- Name: Michael
+  Age: 42
+  Telephone: 44002010
+  Country: Spain
+- Name: Will
+  Age: 50
+  Telephone: 99521080
+  Country: Germany
+> open user.yaml
+━━━┯━━━━━━━━━┯━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━
+ # │ Name    │ Age │ Telephone │ Country
+───┼─────────┼─────┼───────────┼───────────
+ 0 │ Peter   │  30 │  88204828 │ Singapore
+ 1 │ Michael │  42 │  44002010 │ Spain
+ 2 │ Will    │  50 │  99521080 │ Germany
+━━━┷━━━━━━━━━┷━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━
+> open user.yaml --raw
+- Name: Peter
+  Age: 30
+  Telephone: 88204828
+  Country: Singapore
+- Name: Michael
+  Age: 42
+  Telephone: 44002010
+  Country: Spain
+- Name: Will
+  Age: 50
+  Telephone: 99521080
+  Country: Germany
+```
+
+```shell
+> cat user.json
+[
+	{
+		"Name": "Peter",
+		"Age": 30,
+		"Telephone": 88204828,
+		"Country": "Singapore"
+	},
+	{
+		"Name": "Michael",
+		"Age": 42,
+		"Telephone": 44002010,
+		"Country": "Spain"
+	},
+	{
+		"Name": "Will",
+		"Age": 50,
+		"Telephone": 99521080,
+		"Country": "Germany"
+	}
+]
+> open user.json
+━━━┯━━━━━━━━━┯━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━
+ # │ Name    │ Age │ Telephone │ Country
+───┼─────────┼─────┼───────────┼───────────
+ 0 │ Peter   │  30 │  88204828 │ Singapore
+ 1 │ Michael │  42 │  44002010 │ Spain
+ 2 │ Will    │  50 │  99521080 │ Germany
+━━━┷━━━━━━━━━┷━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━
+> open user.json --raw
+[
+	{
+		"Name": "Peter",
+		"Age": 30,
+		"Telephone": 88204828,
+		"Country": "Singapore"
+	},
+	{
+		"Name": "Michael",
+		"Age": 42,
+		"Telephone": 44002010,
+		"Country": "Spain"
+	},
+	{
+		"Name": "Will",
+		"Age": 50,
+		"Telephone": 99521080,
+		"Country": "Germany"
+	}
+]
+```

docs/commands/reverse.md

@@ -0,0 +1,51 @@
+# reverse
+
+This command reverses the order of the elements in a sorted table. 
+
+## Examples 
+
+```shell
+> ls | sort-by name
+━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ # │ name                       │ type │ readonly │ size   │ accessed       │ modified 
+───┼────────────────────────────┼──────┼──────────┼────────┼────────────────┼────────────────
+ 0 │ abaracadabra.txt           │ File │          │ 401 B  │ 23 minutes ago │ 16 minutes ago 
+ 1 │ coww.txt                   │ File │          │  24 B  │ 22 minutes ago │ 17 minutes ago 
+ 2 │ randomweirdstuff.txt       │ File │          │ 197 B  │ 21 minutes ago │ 18 minutes ago 
+ 3 │ youshouldeatmorecereal.txt │ File │          │ 768 B  │ 30 seconds ago │ now 
+ 4 │ zeusiscrazy.txt            │ File │          │ 556 B  │ 22 minutes ago │ 18 minutes ago 
+━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
+> ls | sort-by name | reverse
+━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ # │ name                       │ type │ readonly │ size   │ accessed       │ modified 
+───┼────────────────────────────┼──────┼──────────┼────────┼────────────────┼────────────────
+ 0 │ zeusiscrazy.txt            │ File │          │ 556 B  │ 22 minutes ago │ 19 minutes ago 
+ 1 │ youshouldeatmorecereal.txt │ File │          │ 768 B  │ 39 seconds ago │ 18 seconds ago 
+ 2 │ randomweirdstuff.txt       │ File │          │ 197 B  │ 21 minutes ago │ 18 minutes ago 
+ 3 │ coww.txt                   │ File │          │  24 B  │ 22 minutes ago │ 18 minutes ago 
+ 4 │ abaracadabra.txt           │ File │          │ 401 B  │ 23 minutes ago │ 16 minutes ago 
+━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
+```
+
+```shell
+> ls | sort-by size
+━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ # │ name                       │ type │ readonly │ size   │ accessed       │ modified 
+───┼────────────────────────────┼──────┼──────────┼────────┼────────────────┼────────────────
+ 0 │ coww.txt                   │ File │          │  24 B  │ 22 minutes ago │ 18 minutes ago 
+ 1 │ randomweirdstuff.txt       │ File │          │ 197 B  │ 21 minutes ago │ 18 minutes ago 
+ 2 │ abaracadabra.txt           │ File │          │ 401 B  │ 23 minutes ago │ 16 minutes ago 
+ 3 │ zeusiscrazy.txt            │ File │          │ 556 B  │ 22 minutes ago │ 19 minutes ago 
+ 4 │ youshouldeatmorecereal.txt │ File │          │ 768 B  │ a minute ago   │ 26 seconds ago 
+━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
+> ls | sort-by size | reverse
+━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ # │ name                       │ type │ readonly │ size   │ accessed       │ modified 
+───┼────────────────────────────┼──────┼──────────┼────────┼────────────────┼────────────────
+ 0 │ youshouldeatmorecereal.txt │ File │          │ 768 B  │ a minute ago   │ 32 seconds ago 
+ 1 │ zeusiscrazy.txt            │ File │          │ 556 B  │ 22 minutes ago │ 19 minutes ago 
+ 2 │ abaracadabra.txt           │ File │          │ 401 B  │ 23 minutes ago │ 16 minutes ago 
+ 3 │ randomweirdstuff.txt       │ File │          │ 197 B  │ 21 minutes ago │ 18 minutes ago 
+ 4 │ coww.txt                   │ File │          │  24 B  │ 22 minutes ago │ 18 minutes ago 
+━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
+```

docs/commands/shells.md

@@ -0,0 +1,26 @@
+# shells
+
+Lists all the active nu shells with a number/index, a name and the path. Also marks the current nu shell.
+
+## Examples
+
+```
+> shells
+---+---+------------+---------------
+ # |   | name       | path 
+---+---+------------+---------------
+ 0 |   | filesystem | /usr 
+ 1 |   | filesystem | /home 
+ 2 | X | filesystem | /home/username 
+---+---+------------+---------------
+```
+
+```
+/> shells
+---+---+-------------------------------------------------+------------------------------------
+ # |   | name                                            | path
+---+---+-------------------------------------------------+------------------------------------
+ 0 |   | filesystem                                      | /Users/username/Code/nushell
+ 1 | X | {/Users/username/Code/nushell/Cargo.toml}       | /
+---+---+-------------------------------------------------+------------------------------------
+```

docs/commands/sort-by.md

@@ -0,0 +1,56 @@
+
+# env
+
+The `sort-by` command sorts the table being displayed in the terminal by a chosen column(s). 
+
+`sort-by` takes multiple arguments (being the names of columns) sorting by each argument in order. 
+
+
+## Examples -
+
+```shell 
+/home/example> ls | sort-by size
+━━━┯━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ # │ name │ type │ readonly │ size   │ accessed       │ modified 
+───┼──────┼──────┼──────────┼────────┼────────────────┼────────────────
+ 0 │ az   │ File │          │  18 B  │ 4 minutes ago  │ 4 minutes ago 
+ 1 │ a    │ File │          │  18 B  │ 4 minutes ago  │ 38 minutes ago 
+ 2 │ ad   │ File │          │  18 B  │ 4 minutes ago  │ 4 minutes ago 
+ 3 │ ac   │ File │          │  18 B  │ 4 minutes ago  │ 4 minutes ago 
+ 4 │ ab   │ File │          │  18 B  │ 4 minutes ago  │ 4 minutes ago 
+ 5 │ c    │ File │          │ 102 B  │ 35 minutes ago │ 35 minutes ago 
+ 6 │ d    │ File │          │ 189 B  │ 35 minutes ago │ 34 minutes ago 
+ 7 │ b    │ File │          │ 349 B  │ 35 minutes ago │ 35 minutes ago 
+━━━┷━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
+```
+
+```shell 
+/home/example> ls | sort-by size name
+━━━┯━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ # │ name │ type │ readonly │ size   │ accessed       │ modified 
+───┼──────┼──────┼──────────┼────────┼────────────────┼────────────────
+ 0 │ a    │ File │          │  18 B  │ 4 minutes ago  │ 39 minutes ago 
+ 1 │ ab   │ File │          │  18 B  │ 4 minutes ago  │ 4 minutes ago 
+ 2 │ ac   │ File │          │  18 B  │ 4 minutes ago  │ 4 minutes ago 
+ 3 │ ad   │ File │          │  18 B  │ 4 minutes ago  │ 4 minutes ago 
+ 4 │ az   │ File │          │  18 B  │ 4 minutes ago  │ 4 minutes ago 
+ 5 │ c    │ File │          │ 102 B  │ 36 minutes ago │ 35 minutes ago 
+ 6 │ d    │ File │          │ 189 B  │ 35 minutes ago │ 35 minutes ago 
+ 7 │ b    │ File │          │ 349 B  │ 36 minutes ago │ 36 minutes ago 
+```
+
+```
+/home/example> ls | sort-by accessed
+━━━┯━━━━━━┯━━━━━━┯━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ # │ name │ type │ readonly │ size   │ accessed       │ modified 
+───┼──────┼──────┼──────────┼────────┼────────────────┼────────────────
+ 0 │ b    │ File │          │ 349 B  │ 37 minutes ago │ 37 minutes ago 
+ 1 │ c    │ File │          │ 102 B  │ 37 minutes ago │ 37 minutes ago 
+ 2 │ d    │ File │          │ 189 B  │ 37 minutes ago │ 36 minutes ago 
+ 3 │ a    │ File │          │  18 B  │ 6 minutes ago  │ 40 minutes ago 
+ 4 │ ab   │ File │          │  18 B  │ 6 minutes ago  │ 6 minutes ago 
+ 5 │ ac   │ File │          │  18 B  │ 6 minutes ago  │ 6 minutes ago 
+ 6 │ ad   │ File │          │  18 B  │ 5 minutes ago  │ 5 minutes ago 
+ 7 │ az   │ File │          │  18 B  │ 5 minutes ago  │ 5 minutes ago 
+━━━┷━━━━━━┷━━━━━━┷━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
+```

docs/commands/str.md

@@ -0,0 +1,50 @@
+# str
+
+Consumes either a single value or a table and converts the provided data to a string and optionally applies a change.
+
+## Examples
+
+```shell
+> shells
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path
+───┼───┼────────────┼────────────────────────────────
+ 0 │ X │ filesystem │ /home/TUX/stuff/expr/stuff
+ 1 │   │ filesystem │ /
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | str path --upcase
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path
+───┼───┼────────────┼────────────────────────────────
+ 0 │ X │ filesystem │ /HOME/TUX/STUFF/EXPR/STUFF
+ 1 │   │ filesystem │ /
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | str path --downcase
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path
+───┼───┼────────────┼────────────────────────────────
+ 0 │ X │ filesystem │ /home/tux/stuff/expr/stuff
+ 1 │   │ filesystem │ /
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | str # --substring "21, 99"
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path
+───┼───┼────────────┼────────────────────────────────
+ 0 │ X │ filesystem │ stuff
+ 1 │   │ filesystem │
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | str # --substring "6,"
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path
+───┼───┼────────────┼────────────────────────────────
+ 0 │ X │ filesystem │ TUX/stuff/expr/stuff
+ 1 │   │ filesystem │
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+> echo "1, 2, 3" | split-row "," | str --to-int | sum
+━━━━━━━━━
+ <value>
+─────────
+       6
+━━━━━━━━━
+```

docs/commands/sum.md

@@ -0,0 +1,44 @@
+# sum 
+This command allows you to calculate the sum of values in a column.  
+
+## Examples 
+To get the sum of the file sizes in a directory, simply pipe the size column from the ls command to the sum command.
+
+```shell
+> ls | get size | sum
+━━━━━━━━━
+ value
+━━━━━━━━━
+ 51.0 MB
+━━━━━━━━━
+```
+
+To get the sum of the characters that make up your  present working directory.
+```shell
+> pwd | split-row / | size | get chars | sum
+━━━━━━━━━
+ <value>
+━━━━━━━━━
+21
+━━━━━━━━━
+```
+
+Note that sum only works for integer and byte values. If the shell doesn't recognize the values in a column as one of those types, it will return an error.
+One way to solve this is to convert each row to an integer when possible and then pipe the result to `sum`
+
+```shell
+> open tests/fixtures/formats/caco3_plastics.csv | get tariff_item | sum
+error: Unrecognized type in stream: Primitive(String("2509000000"))
+- shell:1:0
+1 | open tests/fixtures/formats/caco3_plastics.csv | get tariff_item | sum
+  | ^^^^ source
+```
+
+```shell
+> open tests/fixtures/formats/caco3_plastics.csv | get tariff_item | str --to-int | sum
+━━━━━━━━━━━━━
+ <value>
+─────────────
+ 29154639996
+━━━━━━━━━━━━━
+```

docs/commands/sys.md

@@ -0,0 +1,32 @@
+# sys
+
+This command gives information about the system where nu is running on.
+
+## Examples
+
+```shell
+> sys
+━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ host           │ cpu            │ disks           │ mem            │ net              │ battery
+────────────────┼────────────────┼─────────────────┼────────────────┼──────────────────┼────────────────
+ [table: 1 row] │ [table: 1 row] │ [table: 3 rows] │ [table: 1 row] │ [table: 18 rows] │ [table: 1 row]
+━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
+> sys | get host
+━━━━━━━━┯━━━━━━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━
+ name   │ release │ hostname     │ arch   │ uptime         │ users
+────────┼─────────┼──────────────┼────────┼────────────────┼──────────────────
+ Darwin │ 18.7.0  │ C02Y437GJGH6 │ x86_64 │ [table: 1 row] │ [table: 17 rows]
+━━━━━━━━┷━━━━━━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━
+> sys | get cpu
+━━━━━━━┯━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━
+ cores │ current ghz       │ min ghz           │ max ghz
+───────┼───────────────────┼───────────────────┼───────────────────
+    12 │ 2.600000000000000 │ 2.600000000000000 │ 2.600000000000000
+━━━━━━━┷━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━
+> sys | get mem
+━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━
+ total   │ free     │ swap total │ swap free
+─────────┼──────────┼────────────┼───────────
+ 34.4 GB │ 545.0 MB │     2.1 GB │  723.0 MB
+━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━
+```

docs/commands/tags.md

@@ -0,0 +1,47 @@
+# tags
+
+The tags commands allows users to access the metadata of the previous value in
+the pipeline. This command may be run on multiple values of input as well.
+
+As of writing this, the only metadata returned includes:
+
+- `span`: the start and end indices of the previous value's substring location
+- `anchor`: the source where data was loaded from; this may not appear if the
+  previous pipeline value didn't actually have a source (like trying to `open` a
+  dir, or running `ls` on a dir)
+
+## Examples
+
+```shell
+> open README.md | tags
+━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ span           │ anchor
+────────────────┼──────────────────────────────────────────────────
+ [table: 1 row] │ /Users/danielh/Projects/github/nushell/README.md
+━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+```
+
+```shell
+> open README.md | tags | get span
+━━━━━━━┯━━━━━
+ start │ end
+───────┼─────
+     5 │  14
+━━━━━━━┷━━━━━
+```
+
+```shell
+> ls | tags | first 3 | get span
+━━━┯━━━━━━━┯━━━━━
+ # │ start │ end
+───┼───────┼─────
+ 0 │     0 │   2
+ 1 │     0 │   2
+ 2 │     0 │   2
+━━━┷━━━━━━━┷━━━━━
+```
+
+## Reference
+
+More useful information on the `tags` command can be found by referencing [The
+Nu Book's entry on Metadata](https://book.nushell.sh/en/metadata)

docs/commands/to-csv.md

@@ -0,0 +1,80 @@
+# to-csv
+
+Converts table data into csv text.
+
+## Example
+
+```shell
+> shells
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path 
+───┼───┼────────────┼────────────────────────
+ 0 │ X │ filesystem │ /home/shaurya 
+ 1 │   │ filesystem │ /home/shaurya/Pictures 
+ 2 │   │ filesystem │ /home/shaurya/Desktop 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | to-csv
+ ,name,path
+X,filesystem,/home/shaurya
+ ,filesystem,/home/shaurya/Pictures
+ ,filesystem,/home/shaurya/Desktop
+```
+
+```shell
+> open caco3_plastics.csv
+━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━━━━
+ # │ importer     │ shipper      │ tariff_item │ name         │ origin   │ shipped_at │ arrived_at │ net_weight │ fob_price │ cif_price │ cif_per_net_ 
+   │              │              │             │              │          │            │            │            │           │           │ weight 
+───┼──────────────┼──────────────┼─────────────┼──────────────┼──────────┼────────────┼────────────┼────────────┼───────────┼───────────┼──────────────
+ 0 │ PLASTICOS    │ S A REVERTE  │ 2509000000  │ CARBONATO DE │ SPAIN    │ 18/03/2016 │ 17/04/2016 │ 81,000.00  │ 14,417.58 │ 18,252.34 │ 0.23 
+   │ RIVAL CIA    │              │             │ CALCIO TIPO  │          │            │            │            │           │           │  
+   │ LTDA         │              │             │ CALCIPORE    │          │            │            │            │           │           │  
+   │              │              │             │ 160 T AL     │          │            │            │            │           │           │  
+ 1 │ MEXICHEM     │ OMYA ANDINA  │ 2836500000  │ CARBONATO    │ COLOMBIA │ 07/07/2016 │ 10/07/2016 │ 26,000.00  │ 7,072.00  │ 8,127.18  │ 0.31 
+   │ ECUADOR S.A. │ S A          │             │              │          │            │            │            │           │           │  
+ 2 │ PLASTIAZUAY  │ SA REVERTE   │ 2836500000  │ CARBONATO DE │ SPAIN    │ 27/07/2016 │ 09/08/2016 │ 81,000.00  │ 8,100.00  │ 11,474.55 │ 0.14 
+   │ SA           │              │             │ CALCIO       │          │            │            │            │           │           │  
+ 3 │ PLASTICOS    │ AND          │ 2836500000  │ CALCIUM      │ TURKEY   │ 04/10/2016 │ 11/11/2016 │ 100,000.00 │ 17,500.00 │ 22,533.75 │ 0.23 
+   │ RIVAL CIA    │ ENDUSTRIYEL  │             │ CARBONATE    │          │            │            │            │           │           │  
+   │ LTDA         │ HAMMADDELER  │             │ ANADOLU      │          │            │            │            │           │           │  
+   │              │ DIS TCARET   │             │ ANDCARB CT-1 │          │            │            │            │           │           │  
+   │              │ LTD.STI.     │             │              │          │            │            │            │           │           │  
+ 4 │ QUIMICA      │ SA REVERTE   │ 2836500000  │ CARBONATO DE │ SPAIN    │ 24/06/2016 │ 12/07/2016 │ 27,000.00  │ 3,258.90  │ 5,585.00  │ 0.21 
+   │ COMERCIAL    │              │             │ CALCIO       │          │            │            │            │           │           │  
+   │ QUIMICIAL    │              │             │              │          │            │            │            │           │           │  
+   │ CIA. LTDA.   │              │             │              │          │            │            │            │           │           │  
+ 5 │ PICA         │ OMYA ANDINA  │ 3824909999  │ CARBONATO DE │ COLOMBIA │ 01/01/1900 │ 18/01/2016 │ 66,500.00  │ 12,635.00 │ 18,670.52 │ 0.28 
+   │ PLASTICOS    │ S.A          │             │ CALCIO       │          │            │            │            │           │           │  
+   │ INDUSTRIALES │              │             │              │          │            │            │            │           │           │  
+   │ C.A.         │              │             │              │          │            │            │            │           │           │  
+ 6 │ PLASTIQUIM   │ OMYA ANDINA  │ 3824909999  │ CARBONATO DE │ COLOMBIA │ 01/01/1900 │ 25/10/2016 │ 33,000.00  │ 6,270.00  │ 9,999.00  │ 0.30 
+   │ S.A.         │ S.A NIT      │             │ CALCIO       │          │            │            │            │           │           │  
+   │              │ 830.027.386- │             │ RECUBIERTO   │          │            │            │            │           │           │  
+   │              │ 6            │             │ CON ACIDO    │          │            │            │            │           │           │  
+   │              │              │             │ ESTEARICO    │          │            │            │            │           │           │  
+   │              │              │             │ OMYA CARB 1T │          │            │            │            │           │           │  
+   │              │              │             │ CG BBS 1000  │          │            │            │            │           │           │  
+ 7 │ QUIMICOS     │ SIBELCO      │ 3824909999  │ CARBONATO DE │ COLOMBIA │ 01/11/2016 │ 03/11/2016 │ 52,000.00  │ 8,944.00  │ 13,039.05 │ 0.25 
+   │ ANDINOS      │ COLOMBIA SAS │             │ CALCIO       │          │            │            │            │           │           │  
+   │ QUIMANDI     │              │             │ RECUBIERTO   │          │            │            │            │           │           │  
+   │ S.A.         │              │             │              │          │            │            │            │           │           │  
+ 8 │ TIGRE        │ OMYA ANDINA  │ 3824909999  │ CARBONATO DE │ COLOMBIA │ 01/01/1900 │ 28/10/2016 │ 66,000.00  │ 11,748.00 │ 18,216.00 │ 0.28 
+   │ ECUADOR S.A. │ S.A NIT      │             │ CALCIO       │          │            │            │            │           │           │  
+   │ ECUATIGRE    │ 830.027.386- │             │ RECUBIERTO   │          │            │            │            │           │           │  
+   │              │ 6            │             │ CON ACIDO    │          │            │            │            │           │           │  
+   │              │              │             │ ESTEARICO    │          │            │            │            │           │           │  
+   │              │              │             │ OMYACARB 1T  │          │            │            │            │           │           │  
+   │              │              │             │ CG BPA 25 NO │          │            │            │            │           │           │  
+━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━━━━
+> open caco3_plastics.csv | to-csv
+importer,shipper,tariff_item,name,origin,shipped_at,arrived_at,net_weight,fob_price,cif_price,cif_per_net_weight
+PLASTICOS RIVAL CIA LTDA,S A REVERTE,2509000000,CARBONATO DE CALCIO TIPO CALCIPORE 160 T AL,SPAIN,18/03/2016,17/04/2016,"81,000.00","14,417.58","18,252.34",0.23
+MEXICHEM ECUADOR S.A.,OMYA ANDINA S A,2836500000,CARBONATO,COLOMBIA,07/07/2016,10/07/2016,"26,000.00","7,072.00","8,127.18",0.31
+PLASTIAZUAY SA,SA REVERTE,2836500000,CARBONATO DE CALCIO,SPAIN,27/07/2016,09/08/2016,"81,000.00","8,100.00","11,474.55",0.14
+PLASTICOS RIVAL CIA LTDA,AND ENDUSTRIYEL HAMMADDELER DIS TCARET LTD.STI.,2836500000,CALCIUM CARBONATE ANADOLU ANDCARB CT-1,TURKEY,04/10/2016,11/11/2016,"100,000.00","17,500.00","22,533.75",0.23
+QUIMICA COMERCIAL QUIMICIAL CIA. LTDA.,SA REVERTE,2836500000,CARBONATO DE CALCIO,SPAIN,24/06/2016,12/07/2016,"27,000.00","3,258.90","5,585.00",0.21
+PICA PLASTICOS INDUSTRIALES C.A.,OMYA ANDINA S.A,3824909999,CARBONATO DE CALCIO,COLOMBIA,01/01/1900,18/01/2016,"66,500.00","12,635.00","18,670.52",0.28
+PLASTIQUIM S.A.,OMYA ANDINA S.A NIT 830.027.386-6,3824909999,CARBONATO DE CALCIO RECUBIERTO CON ACIDO ESTEARICO OMYA CARB 1T CG BBS 1000,COLOMBIA,01/01/1900,25/10/2016,"33,000.00","6,270.00","9,999.00",0.30
+QUIMICOS ANDINOS QUIMANDI S.A.,SIBELCO COLOMBIA SAS,3824909999,CARBONATO DE CALCIO RECUBIERTO,COLOMBIA,01/11/2016,03/11/2016,"52,000.00","8,944.00","13,039.05",0.25
+TIGRE ECUADOR S.A. ECUATIGRE,OMYA ANDINA S.A NIT 830.027.386-6,3824909999,CARBONATO DE  CALCIO RECUBIERTO CON ACIDO ESTEARICO OMYACARB 1T CG BPA 25 NO,COLOMBIA,01/01/1900,28/10/2016,"66,000.00","11,748.00","18,216.00",0.28
+```

docs/commands/to-json.md

@@ -0,0 +1,40 @@
+# to-json
+
+Converts table data into json text.
+
+## Example
+
+```shell
+> shells
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path 
+───┼───┼────────────┼────────────────────────
+ 0 │ X │ filesystem │ /home/shaurya 
+ 1 │   │ filesystem │ /home/shaurya/Pictures 
+ 2 │   │ filesystem │ /home/shaurya/Desktop 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | to-json
+[{" ":"X","name":"filesystem","path":"/home/shaurya"},{" ":" ","name":"filesystem","path":"/home/shaurya/Pictures"},{" ":" ","name":"filesystem","path":"/home/shaurya/Desktop"}]
+```
+
+```shell
+> open sgml_description.json 
+━━━━━━━━━━━━━━━━
+ glossary 
+────────────────
+ [table: 1 row] 
+━━━━━━━━━━━━━━━━
+> open sgml_description.json | to-json
+{"glossary":{"title":"example glossary","GlossDiv":{"title":"S","GlossList":{"GlossEntry":{"ID":"SGML","SortAs":"SGML","GlossTerm":"Standard Generalized Markup Language","Acronym":"SGML","Abbrev":"ISO 8879:1986","Height":10,"GlossDef":{"para":"A meta-markup language, used to create markup languages such as DocBook.","GlossSeeAlso":["GML","XML"]},"Sections":[101,102],"GlossSee":"markup"}}}}}
+```
+We can also convert formats !
+```shell
+> open jonathan.xml
+━━━━━━━━━━━━━━━━
+ rss 
+────────────────
+ [table: 1 row] 
+━━━━━━━━━━━━━━━━
+> open jonathan.xml | to-json
+{"rss":[{"channel":[{"title":["Jonathan Turner"]},{"link":["http://www.jonathanturner.org"]},{"link":[]},{"item":[{"title":["Creating crossplatform Rust terminal apps"]},{"description":["<p><img src=\"/images/pikachu.jpg\" alt=\"Pikachu animation in Windows\" /></p>\n\n<p><em>Look Mom, Pikachu running in Windows CMD!</em></p>\n\n<p>Part of the adventure is not seeing the way ahead and going anyway.</p>\n"]},{"pubDate":["Mon, 05 Oct 2015 00:00:00 +0000"]},{"link":["http://www.jonathanturner.org/2015/10/off-to-new-adventures.html"]},{"guid":["http://www.jonathanturner.org/2015/10/off-to-new-adventures.html"]}]}]}]}
+```

docs/commands/to-toml.md

@@ -0,0 +1,112 @@
+# to-toml
+
+Converts table data into toml text.
+
+## Example
+
+```shell
+> shells
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path 
+───┼───┼────────────┼────────────────────────
+ 0 │ X │ filesystem │ /home/shaurya 
+ 1 │   │ filesystem │ /home/shaurya/Pictures 
+ 2 │   │ filesystem │ /home/shaurya/Desktop 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | to-toml
+[[]]
+" " = "X"
+name = "filesystem"
+path = "/home/shaurya"
+
+[[]]
+" " = " "
+name = "filesystem"
+path = "/home/shaurya/Pictures"
+
+[[]]
+" " = " "
+name = "filesystem"
+path = "/home/shaurya/Desktop"
+
+```
+
+```shell
+> open cargo_sample.toml
+━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━
+ dependencies   │ dev-dependencies │ package 
+────────────────┼──────────────────┼────────────────
+ [table: 1 row] │ [table: 1 row]   │ [table: 1 row] 
+━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━
+> open cargo_sample.toml | to-toml
+[dependencies]
+ansi_term = "0.11.0"
+app_dirs = "1.2.1"
+byte-unit = "2.1.0"
+bytes = "0.4.12"
+chrono-humanize = "0.0.11"
+chrono-tz = "0.5.1"
+clap = "2.33.0"
+conch-parser = "0.1.1"
+derive-new = "0.5.6"
+dunce = "1.0.0"
+futures-sink-preview = "0.3.0-alpha.16"
+futures_codec = "0.2.2"
+getset = "0.0.7"
+git2 = "0.8.0"
+itertools = "0.8.0"
+lalrpop-util = "0.17.0"
+language-reporting = "0.3.0"
+log = "0.4.6"
+logos = "0.10.0-rc2"
+logos-derive = "0.10.0-rc2"
+nom = "5.0.0-beta1"
+ordered-float = "1.0.2"
+pretty_env_logger = "0.3.0"
+prettyprint = "0.6.0"
+prettytable-rs = "0.8.0"
+regex = "1.1.6"
+rustyline = "4.1.0"
+serde = "1.0.91"
+serde_derive = "1.0.91"
+serde_json = "1.0.39"
+subprocess = "0.1.18"
+sysinfo = "0.8.4"
+term = "0.5.2"
+tokio-fs = "0.1.6"
+toml = "0.5.1"
+toml-query = "0.9.0"
+
+[dependencies.chrono]
+features = ["serde"]
+version = "0.4.6"
+
+[dependencies.cursive]
+default-features = false
+features = ["pancurses-backend"]
+version = "0.12.0"
+
+[dependencies.futures-preview]
+features = ["compat", "io-compat"]
+version = "0.3.0-alpha.16"
+
+[dependencies.indexmap]
+features = ["serde-1"]
+version = "1.0.2"
+
+[dependencies.pancurses]
+features = ["win32a"]
+version = "0.16"
+
+[dev-dependencies]
+pretty_assertions = "0.6.1"
+
+[package]
+authors = ["Yehuda Katz <wycats@gmail.com>"]
+description = "A shell for the GitHub era"
+edition = "2018"
+license = "ISC"
+name = "nu"
+version = "0.1.1"
+
+```

docs/commands/to-tsv.md

@@ -0,0 +1,80 @@
+# to-tsv
+
+Converts table data into tsv text.
+
+## Example
+
+```shell
+> shells
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path 
+───┼───┼────────────┼────────────────────────
+ 0 │ X │ filesystem │ /home/shaurya 
+ 1 │   │ filesystem │ /home/shaurya/Pictures 
+ 2 │   │ filesystem │ /home/shaurya/Desktop 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━
+> shells |to-tsv
+ 	name	path
+X	filesystem	/home/shaurya
+ 	
+```
+
+```shell
+> open caco3_plastics.tsv 
+━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━━━━━┯━━━━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━━━━
+ # │ importer     │ shipper      │ tariff_item │ name         │ origin   │ shipped_at │ arrived_at │ net_weight │ fob_price │ cif_price │ cif_per_net_ 
+   │              │              │             │              │          │            │            │            │           │           │ weight 
+───┼──────────────┼──────────────┼─────────────┼──────────────┼──────────┼────────────┼────────────┼────────────┼───────────┼───────────┼──────────────
+ 0 │ PLASTICOS    │ S A REVERTE  │ 2509000000  │ CARBONATO DE │ SPAIN    │ 18/03/2016 │ 17/04/2016 │ 81,000.00  │ 14,417.58 │ 18,252.34 │ 0.23 
+   │ RIVAL CIA    │              │             │ CALCIO TIPO  │          │            │            │            │           │           │  
+   │ LTDA         │              │             │ CALCIPORE    │          │            │            │            │           │           │  
+   │              │              │             │ 160 T AL     │          │            │            │            │           │           │  
+ 1 │ MEXICHEM     │ OMYA ANDINA  │ 2836500000  │ CARBONATO    │ COLOMBIA │ 07/07/2016 │ 10/07/2016 │ 26,000.00  │ 7,072.00  │ 8,127.18  │ 0.31 
+   │ ECUADOR S.A. │ S A          │             │              │          │            │            │            │           │           │  
+ 2 │ PLASTIAZUAY  │ SA REVERTE   │ 2836500000  │ CARBONATO DE │ SPAIN    │ 27/07/2016 │ 09/08/2016 │ 81,000.00  │ 8,100.00  │ 11,474.55 │ 0.14 
+   │ SA           │              │             │ CALCIO       │          │            │            │            │           │           │  
+ 3 │ PLASTICOS    │ AND          │ 2836500000  │ CALCIUM      │ TURKEY   │ 04/10/2016 │ 11/11/2016 │ 100,000.00 │ 17,500.00 │ 22,533.75 │ 0.23 
+   │ RIVAL CIA    │ ENDUSTRIYEL  │             │ CARBONATE    │          │            │            │            │           │           │  
+   │ LTDA         │ HAMMADDELER  │             │ ANADOLU      │          │            │            │            │           │           │  
+   │              │ DIS TCARET   │             │ ANDCARB CT-1 │          │            │            │            │           │           │  
+   │              │ LTD.STI.     │             │              │          │            │            │            │           │           │  
+ 4 │ QUIMICA      │ SA REVERTE   │ 2836500000  │ CARBONATO DE │ SPAIN    │ 24/06/2016 │ 12/07/2016 │ 27,000.00  │ 3,258.90  │ 5,585.00  │ 0.21 
+   │ COMERCIAL    │              │             │ CALCIO       │          │            │            │            │           │           │  
+   │ QUIMICIAL    │              │             │              │          │            │            │            │           │           │  
+   │ CIA. LTDA.   │              │             │              │          │            │            │            │           │           │  
+ 5 │ PICA         │ OMYA ANDINA  │ 3824909999  │ CARBONATO DE │ COLOMBIA │ 01/01/1900 │ 18/01/2016 │ 66,500.00  │ 12,635.00 │ 18,670.52 │ 0.28 
+   │ PLASTICOS    │ S.A          │             │ CALCIO       │          │            │            │            │           │           │  
+   │ INDUSTRIALES │              │             │              │          │            │            │            │           │           │  
+   │ C.A.         │              │             │              │          │            │            │            │           │           │  
+ 6 │ PLASTIQUIM   │ OMYA ANDINA  │ 3824909999  │ CARBONATO DE │ COLOMBIA │ 01/01/1900 │ 25/10/2016 │ 33,000.00  │ 6,270.00  │ 9,999.00  │ 0.30 
+   │ S.A.         │ S.A NIT      │             │ CALCIO       │          │            │            │            │           │           │  
+   │              │ 830.027.386- │             │ RECUBIERTO   │          │            │            │            │           │           │  
+   │              │ 6            │             │ CON ACIDO    │          │            │            │            │           │           │  
+   │              │              │             │ ESTEARICO    │          │            │            │            │           │           │  
+   │              │              │             │ OMYA CARB 1T │          │            │            │            │           │           │  
+   │              │              │             │ CG BBS 1000  │          │            │            │            │           │           │  
+ 7 │ QUIMICOS     │ SIBELCO      │ 3824909999  │ CARBONATO DE │ COLOMBIA │ 01/11/2016 │ 03/11/2016 │ 52,000.00  │ 8,944.00  │ 13,039.05 │ 0.25 
+   │ ANDINOS      │ COLOMBIA SAS │             │ CALCIO       │          │            │            │            │           │           │  
+   │ QUIMANDI     │              │             │ RECUBIERTO   │          │            │            │            │           │           │  
+   │ S.A.         │              │             │              │          │            │            │            │           │           │  
+ 8 │ TIGRE        │ OMYA ANDINA  │ 3824909999  │ CARBONATO DE │ COLOMBIA │ 01/01/1900 │ 28/10/2016 │ 66,000.00  │ 11,748.00 │ 18,216.00 │ 0.28 
+   │ ECUADOR S.A. │ S.A NIT      │             │ CALCIO       │          │            │            │            │           │           │  
+   │ ECUATIGRE    │ 830.027.386- │             │ RECUBIERTO   │          │            │            │            │           │           │  
+   │              │ 6            │             │ CON ACIDO    │          │            │            │            │           │           │  
+   │              │              │             │ ESTEARICO    │          │            │            │            │           │           │  
+   │              │              │             │ OMYACARB 1T  │          │            │            │            │           │           │  
+   │              │              │             │ CG BPA 25 NO │          │            │            │            │           │           │  
+━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━━━━━┷━━━━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━━━━
+> open caco3_plastics.tsv | to-tsv
+importer        shipper tariff_item     name    origin  shipped_at      arrived_at      net_weight      fob_price       cif_price       cif_per_net_weight
+PLASTICOS RIVAL CIA LTDA        S A REVERTE     2509000000      CARBONATO DE CALCIO TIPO CALCIPORE 160 T AL     SPAIN   18/03/2016      17/04/2016    81,000.00        14,417.58       18,252.34       0.23
+MEXICHEM ECUADOR S.A.   OMYA ANDINA S A 2836500000      CARBONATO       COLOMBIA        07/07/2016      10/07/2016      26,000.00       7,072.00      8,127.18 0.31
+PLASTIAZUAY SA  SA REVERTE      2836500000      CARBONATO DE CALCIO     SPAIN   27/07/2016      09/08/2016      81,000.00       8,100.00        11,474.55      0.14
+PLASTICOS RIVAL CIA LTDA        AND ENDUSTRIYEL HAMMADDELER DIS TCARET LTD.STI. 2836500000      CALCIUM CARBONATE ANADOLU ANDCARB CT-1  TURKEY  04/10/2016     11/11/2016      100,000.00      17,500.00       22,533.75       0.23
+QUIMICA COMERCIAL QUIMICIAL CIA. LTDA.  SA REVERTE      2836500000      CARBONATO DE CALCIO     SPAIN   24/06/2016      12/07/2016      27,000.00     3,258.90 5,585.00        0.21
+PICA PLASTICOS INDUSTRIALES C.A.        OMYA ANDINA S.A 3824909999      CARBONATO DE CALCIO     COLOMBIA        01/01/1900      18/01/2016      66,500.00      12,635.00       18,670.52       0.28
+PLASTIQUIM S.A. OMYA ANDINA S.A NIT 830.027.386-6       3824909999      CARBONATO DE CALCIO RECUBIERTO CON ACIDO ESTEARICO OMYA CARB 1T CG BBS 1000   COLOMBIA 01/01/1900      25/10/2016      33,000.00       6,270.00        9,999.00        0.30
+QUIMICOS ANDINOS QUIMANDI S.A.  SIBELCO COLOMBIA SAS    3824909999      CARBONATO DE CALCIO RECUBIERTO  COLOMBIA        01/11/2016      03/11/2016    52,000.00        8,944.00        13,039.05       0.25
+TIGRE ECUADOR S.A. ECUATIGRE    OMYA ANDINA S.A NIT 830.027.386-6       3824909999      CARBONATO DE  CALCIO RECUBIERTO CON ACIDO ESTEARICO OMYACARB 1T CG BPA 25 NO   COLOMBIA        01/01/1900      28/10/2016      66,000.00       11,748.00       18,216.00       0.28
+
+```

docs/commands/to-url.md

@@ -0,0 +1,35 @@
+# to-url
+
+Converts table data into url-formatted text.
+
+## Example
+
+```shell
+> shells
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path 
+───┼───┼────────────┼────────────────────────
+ 0 │ X │ filesystem │ /home/shaurya 
+ 1 │   │ filesystem │ /home/shaurya/Pictures 
+ 2 │   │ filesystem │ /home/shaurya/Desktop 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | to-url
+━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+ # │ value 
+───┼───────────────────────────────────────────────────────
+ 0 │ +=X&name=filesystem&path=%2Fhome%2Fshaurya 
+ 1 │ +=+&name=filesystem&path=%2Fhome%2Fshaurya%2FPictures 
+ 2 │ +=+&name=filesystem&path=%2Fhome%2Fshaurya%2FDesktop 
+━━━┷━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+```
+
+```shell
+> open sample.url 
+━━━━━━━━━━┯━━━━━━━━┯━━━━━━┯━━━━━━━━
+ bread    │ cheese │ meat │ fat 
+──────────┼────────┼──────┼────────
+ baguette │ comté  │ ham  │ butter 
+━━━━━━━━━━┷━━━━━━━━┷━━━━━━┷━━━━━━━━
+> open sample.url  | to-url
+bread=baguette&cheese=comt%C3%A9&meat=ham&fat=butter
+```

docs/commands/to-yaml.md

@@ -0,0 +1,60 @@
+# to-yaml
+
+Converts table data into yaml text.
+
+## Example
+
+```shell
+> shells
+━━━┯━━━┯━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━
+ # │   │ name       │ path 
+───┼───┼────────────┼────────────────────────
+ 0 │ X │ filesystem │ /home/shaurya 
+ 1 │   │ filesystem │ /home/shaurya/Pictures 
+ 2 │   │ filesystem │ /home/shaurya/Desktop 
+━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━━━━━━━━
+> shells | to-yaml
+---
+- " ": X
+  name: filesystem
+  path: /home/shaurya
+- " ": " "
+  name: filesystem
+  path: /home/shaurya/Pictures
+- " ": " "
+  name: filesystem
+  path: /home/shaurya/Desktop
+```
+
+```shell
+> open appveyor.yml 
+━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━┯━━━━━━━┯━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━
+ image              │ environment    │ install         │ build │ test_script     │ cache 
+────────────────────┼────────────────┼─────────────────┼───────┼─────────────────┼─────────────────
+ Visual Studio 2017 │ [table: 1 row] │ [table: 5 rows] │       │ [table: 2 rows] │ [table: 2 rows] 
+━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━┷━━━━━━━┷━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━
+> open appveyor.yml | to-yaml
+---
+image: Visual Studio 2017
+environment:
+  global:
+    PROJECT_NAME: nushell
+    RUST_BACKTRACE: 1
+  matrix:
+    - TARGET: x86_64-pc-windows-msvc
+      CHANNEL: nightly
+      BITS: 64
+install:
+  - "set PATH=C:\\msys64\\mingw%BITS%\\bin;C:\\msys64\\usr\\bin;%PATH%"
+  - "curl -sSf -o rustup-init.exe https://win.rustup.rs"
+  - rustup-init.exe -y --default-host %TARGET% --default-toolchain %CHANNEL%-%TARGET%
+  - "set PATH=%PATH%;C:\\Users\\appveyor\\.cargo\\bin"
+  - "call \"C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\VC\\Auxiliary\\Build\\vcvars64.bat\""
+build: false
+test_script:
+  - cargo build --verbose
+  - cargo test --all --verbose
+cache:
+  - target -> Cargo.lock
+  - "C:\\Users\\appveyor\\.cargo\\registry -> Cargo.lock"
+```

docs/commands/trim.md

@@ -0,0 +1,12 @@
+# trim
+
+Trim leading and following whitespace from text data
+
+## Example
+
+```shell
+> echo "    Hello world"
+    Hello world
+> echo "    Hello world" | trim
+Hello world
+```

docs/commands/version.md

@@ -0,0 +1,14 @@
+# version
+
+Outputs the nushell version.
+
+## Examples 
+
+```shell
+> version
+━━━━━━━━━
+ version 
+─────────
+ 0.3.0 
+━━━━━━━━━
+```

docs/commands/where.md

@@ -0,0 +1,34 @@
+# where
+
+This command filters the content of a table based on a condition passed as a parameter, which must be a boolean expression making use of any of the table columns. Other commands such as `ls` are capable of feeding `where` with their output through pipelines.
+
+## Usage
+```shell
+> [input-command] | where [condition]
+```
+
+## Examples 
+
+```shell
+> ls | where size > 4kb
+----+----------------+------+----------+----------+----------------+----------------
+ #  | name           | type | readonly | size     | accessed       | modified 
+----+----------------+------+----------+----------+----------------+----------------
+ 0  | IMG_1291.jpg   | File |          | 115.5 KB | a month ago    | 4 months ago 
+ 1  | README.md      | File |          | 11.1 KB  | 2 days ago     | 2 days ago 
+ 2  | IMG_1291.png   | File |          | 589.0 KB | a month ago    | a month ago 
+ 3  | IMG_1381.jpg   | File |          | 81.0 KB  | a month ago    | 4 months ago 
+ 4  | butterfly.jpeg | File |          | 4.2 KB   | a month ago    | a month ago 
+ 5  | Cargo.lock     | File |          | 199.6 KB | 22 minutes ago | 22 minutes ago
+```
+
+```shell
+> ps | where cpu > 10
+---+-------+----------+-------+-----------------------------
+ # | pid   | status   | cpu   | name 
+---+-------+----------+-------+-----------------------------
+ 0 | 1992  | Sleeping | 44.52 | /usr/bin/gnome-shell 
+ 1 | 1069  | Sleeping | 16.15 |  
+ 2 | 24116 | Sleeping | 13.70 | /opt/google/chrome/chrome 
+ 3 | 21976 | Sleeping | 12.67 | /usr/share/discord/Discord
+```

docs/docker.md

@@ -0,0 +1,124 @@
+# Docker Guide
+
+| tag                | base image           | plugins | package manager | libs & bins                                                      | size        |
+| ------------------ | -------------------- | ------- | --------------- | ---------------------------------------------------------------- | ----------- |
+| `latest`, `debian` | `debian:latest`      | yes     | apt             | **a lot**, including _glibc_                                     | ~(48+62) MB |
+| `slim`             | `debian:stable-slim` | yes     | apt             | all `nu:debian` image but exclude [this list][.slimify-excludes] | ~(26+62) MB |
+| `alpine`           | `alpine:latest`      | yes     | apk             | all `nu:musl-busybox` image + libcrypto, libssl, libtls, libz    | ~(3+61) MB  |
+| `musl-busybox`     | `busybox:musl`       | no      | —               | GNU utils + _musl_                                               | ~(1+16) MB  |
+| `glibc-busybox`    | `busybox:glibc`      | no      | —               | GNU utils + _glibc_                                              | ~(3+17) MB  |
+| `musl-distroless`  | `distroless/static`  | no      | —               | see [here][distroless/base]                                      | ~(2+16) MB  |
+| `glibc-distroless` | `distroless/cc`      | no      | —               | `distroless/static` with _glibc_                                 | ~(17+17) MB |
+| `glibc`            | `scratch`            | no      | —               | **only `nu` binary-executable** which depend on glibc runtime    | ~17 MB      |
+| `musl`             | `scratch`            | no      | —               | **only `nu` binary-executable** statically linked to musl        | ~16 MB      |
+
+[.slimify-excludes]: https://github.com/debuerreotype/debuerreotype/blob/master/scripts/.slimify-excludes
+[distroless/base]: https://github.com/GoogleContainerTools/distroless/blob/master/base/README.md
+
+## Image Variants
+
+### `nu:<version>`
+This is the defacto image. If you are unsure about what your needs are, you probably want to use this one. It is designed to be used both as a throw away container (mount your source code and start the container to start your app), as well as the base to build other images off of.
+
+<details><summary>example</summary>
+
+Let say you create a plugin in Rust.
+- create a Dockerfile in your root project
+```dockerfile
+FROM nu:0.2
+
+COPY /target/debug/nu_plugin_cowsay /bin/
+ENTRYPOINT ["nu"]
+```
+- build your project first then run it via docker
+```console
+cargo build
+docker run -it .
+```
+</details>
+
+### `nu:<version>-slim`
+This image does not contain the common packages contained in the default tag and only contains the minimal packages needed to run `nu`. Unless you are working in an environment where only the `nu` image will be deployed and you have space constraints, it's highly recommended to use the alpine image if you aim for small image size. Only use this image if you really need **both** `glibc` and small image size.
+
+### `nu:<version>-alpine`
+This image is based on the popular [Alpine Linux project](https://alpinelinux.org/), available in [the alpine official image][alpine]. Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general.
+
+This variant is highly recommended when final image size being as small as possible is desired. The main caveat to note is that it does use `musl` libc instead of `glibc` and friends, so certain software might run into issues depending on the depth of their libc requirements. However, most software doesn't have an issue with this, so this variant is usually a very safe choice. See [this Hacker News comment thread](https://news.ycombinator.com/item?id=10782897) for more discussion of the issues that might arise and some pro/con comparisons of using Alpine-based images.
+
+To minimize image size, it's uncommon for additional related tools (such as `git` or `bash`) to be included in Alpine-based images. Using this image as a base, add the things you need in your own Dockerfile (see the [alpine image description][alpine] for examples of how to install packages if you are unfamiliar).
+
+### `nu:<version>-<libc-variant>`
+This image is based on [`scratch`](https://hub.docker.com/_/scratch) which doesn't create an extra layer. This variants can be handy in a project that uses multiple programming language as you need a lot of tools. By using this in [multi-stage build][], you can slim down the docker image that need to be pulled.
+
+[multi-stage build]: https://docs.docker.com/develop/develop-images/multistage-build/
+
+<details><summary>example</summary>
+
+- using `glibc` variant
+```dockerfile
+FROM nu:0.2-glibc as shell
+FROM node:slim
+
+# Build your plugins
+
+COPY --from=shell /bin/nu /bin/
+# Something else
+ENTRYPOINT ["nu"]
+```
+
+- using `musl` variant
+```dockerfile
+FROM nu:musl as shell
+FROM go:alpine
+
+# Build your plugins
+
+COPY --from=shell /bin/nu /bin/
+# Something else
+ENTRYPOINT ["nu"]
+```
+</details>
+
+### `nu:<version>-<libc-variant>-distroless`
+This image is base on [Distroless](https://github.com/GoogleContainerTools/distroless) which usually to contain only your application and its runtime dependencies. This image do not contain package managers, shells or any other programs you would expect to find in a standard Linux distribution except for nushell itself. All distroless variant always contains:
+- ca-certificates
+- A /etc/passwd entry for a root user
+- A /tmp directory
+- tzdata
+
+As for `glibc-distroless` variant, it **adds**:
+- glibc
+- libssl
+- openssl
+
+> Most likely you want to use this in CI/CD environment for plugins that can be statically compiled.
+
+<details><summary>example</summary>
+
+```dockerfile
+FROM nu:musl-distroless
+
+COPY target/x86_64-unknown-linux-musl/release/nu_plugin_* /bin/
+ENTRYPOINT ["nu"]
+```
+</details>
+
+### `nu:<version>-<libc-variant>-busybox`
+This image is based on [Busybox](https://www.busybox.net/) which is a very good ingredient to craft space-efficient distributions. It combines tiny versions of many common UNIX utilities into a single small executable. It also provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. The utilities in BusyBox generally have fewer options than their full-featured GNU cousins; however, the options that are included provide the expected functionality and behave very much like their GNU counterparts. Basically, this image provides a fairly complete environment for any small or embedded system.
+
+> Use this only if you need common utilities like `tar`, `awk`, and many more but don't want extra blob like nushell plugins and others.
+
+<details><summary>example</summary>
+
+```dockerfile
+FROM nu:0.2-glibc-busybox
+
+ADD https://github.com/user/repo/releases/download/latest/nu_plugin_cowsay.tar.gz /tmp/
+RUN tar xzfv nu_plugin_cowsay.tar.gz -C /bin --strip=1 nu_plugin_cowsay
+
+ENTRYPOINT ["nu"]
+```
+</details>
+
+[musl]: https://www.musl-libc.org/
+[alpine]: https://hub.docker.com/_/alpine/

features.toml

@@ -0,0 +1,21 @@
+[hintsv1]
+
+description = "Adding hints based upon error states in the syntax highlighter"
+enabled = false
+
+[coloring_in_tokens]
+
+description = "Move coloring into the TokensIterator so they can be atomic with the rest of the iterator"
+reason = """
+This is laying the groundwork for merging coloring and parsing. It also makes token_nodes.atomic() naturally
+work with coloring, which is pretty useful on its own.
+"""
+enabled = false
+
+[data_processing_primitives]
+
+description = "Groundwork so tables can be data processed"
+reason = """
+These will allow take tables and be able to transform, process, and explore.
+"""
+enabled = false

rust-toolchain

@@ -0,0 +1 @@
+beta-2019-09-25

src/cli.rs

@@ -1,4 +1,3 @@
-use crate::commands::autoview;
 use crate::commands::classified::{
     ClassifiedCommand, ClassifiedInputStream, ClassifiedPipeline, ExternalCommand, InternalCommand,
     StreamNext,
@@ -7,22 +6,29 @@ use crate::commands::plugin::JsonRpc;
 use crate::commands::plugin::{PluginCommand, PluginSink};
 use crate::commands::whole_stream_command;
 use crate::context::Context;
-crate use crate::errors::ShellError;
+use crate::data::config;
+use crate::data::Value;
+pub(crate) use crate::errors::ShellError;
+use crate::fuzzysearch::{interactive_fuzzy_search, SelectionResult};
 use crate::git::current_branch;
-use crate::object::Value;
 use crate::parser::registry::Signature;
-use crate::parser::{hir, CallNode, Pipeline, PipelineElement, TokenNode};
+use crate::parser::{
+    hir,
+    hir::syntax_shape::{expand_syntax, ExpandContext, PipelineShape},
+    hir::{expand_external_tokens::ExternalTokensShape, tokens_iterator::TokensIterator},
+    TokenNode,
+};
 use crate::prelude::*;
 
-use log::{debug, trace};
-use regex::Regex;
+use log::{debug, log_enabled, trace};
 use rustyline::error::ReadlineError;
-use rustyline::{self, ColorMode, Config, Editor};
+use rustyline::{self, config::Configurer, config::EditMode, ColorMode, Config, Editor};
 use std::env;
 use std::error::Error;
 use std::io::{BufRead, BufReader, Write};
 use std::iter::Iterator;
-use std::sync::atomic::{AtomicBool, Ordering};
+use std::path::PathBuf;
+use std::sync::atomic::Ordering;
 
 #[derive(Debug)]
 pub enum MaybeOwned<'a, T> {
@@ -30,7 +36,7 @@ pub enum MaybeOwned<'a, T> {
     Borrowed(&'a T),
 }
 
-impl<T> MaybeOwned<'a, T> {
+impl<T> MaybeOwned<'_, T> {
     pub fn borrow(&self) -> &T {
         match self {
             MaybeOwned::Owned(v) => v,
@@ -57,87 +63,188 @@ fn load_plugin(path: &std::path::Path, context: &mut Context) -> Result<(), Shel
     let path = dunce::canonicalize(path)?;
 
     let mut input = String::new();
-    match reader.read_line(&mut input) {
-        Ok(_) => {
+    let result = match reader.read_line(&mut input) {
+        Ok(count) => {
+            trace!("processing response ({} bytes)", count);
+            trace!("response: {}", input);
+
             let response = serde_json::from_str::<JsonRpc<Result<Signature, ShellError>>>(&input);
             match response {
                 Ok(jrpc) => match jrpc.params {
                     Ok(params) => {
                         let fname = path.to_string_lossy();
-                        if params.is_filter {
-                            let fname = fname.to_string();
+
+                        trace!("processing {:?}", params);
+
                         let name = params.name.clone();
-                            context.add_commands(vec![whole_stream_command(PluginCommand::new(
-                                name, fname, params,
-                            ))]);
-                            Ok(())
+                        let fname = fname.to_string();
+
+                        if let Some(_) = context.get_command(&name) {
+                            trace!("plugin {:?} already loaded.", &name);
+                        } else {
+                            if params.is_filter {
+                                context.add_commands(vec![whole_stream_command(
+                                    PluginCommand::new(name, fname, params),
+                                )]);
                             } else {
-                            let fname = fname.to_string();
-                            let name = params.name.clone();
                                 context.add_commands(vec![whole_stream_command(PluginSink::new(
                                     name, fname, params,
                                 ))]);
-                            Ok(())
+                            };
                         }
+                        Ok(())
                     }
                     Err(e) => Err(e),
                 },
-                Err(e) => Err(ShellError::string(format!("Error: {:?}", e))),
+                Err(e) => {
+                    trace!("incompatible plugin {:?}", input);
+                    Err(ShellError::untagged_runtime_error(format!(
+                        "Error: {:?}",
+                        e
+                    )))
                 }
             }
-        Err(e) => Err(ShellError::string(format!("Error: {:?}", e))),
         }
+        Err(e) => Err(ShellError::untagged_runtime_error(format!(
+            "Error: {:?}",
+            e
+        ))),
+    };
+
+    let _ = child.wait();
+
+    result
 }
 
-fn load_plugins_in_dir(path: &std::path::PathBuf, context: &mut Context) -> Result<(), ShellError> {
-    let re_bin = Regex::new(r"^nu_plugin_[A-Za-z_]+$")?;
-    let re_exe = Regex::new(r"^nu_plugin_[A-Za-z_]+\.exe$")?;
+fn search_paths() -> Vec<std::path::PathBuf> {
+    let mut search_paths = Vec::new();
 
-    match std::fs::read_dir(path) {
-        Ok(p) => {
-            for entry in p {
-                let entry = entry?;
-                let filename = entry.file_name();
-                let f_name = filename.to_string_lossy();
-                if re_bin.is_match(&f_name) || re_exe.is_match(&f_name) {
-                    let mut load_path = path.clone();
-                    load_path.push(f_name.to_string());
-                    load_plugin(&load_path, context)?;
-                }
-            }
-        }
-        _ => {}
-    }
-    Ok(())
-}
-
-fn load_plugins(context: &mut Context) -> Result<(), ShellError> {
     match env::var_os("PATH") {
         Some(paths) => {
-            for path in env::split_paths(&paths) {
-                let _ = load_plugins_in_dir(&path, context);
-            }
+            search_paths = env::split_paths(&paths).collect::<Vec<_>>();
         }
         None => println!("PATH is not defined in the environment."),
     }
 
-    // Also use our debug output for now
+    #[cfg(debug_assertions)]
+    {
+        // Use our debug plugins in debug mode
         let mut path = std::path::PathBuf::from(".");
         path.push("target");
         path.push("debug");
 
-    let _ = load_plugins_in_dir(&path, context);
+        if path.exists() {
+            search_paths.push(path);
+        }
+    }
 
-    // Also use our release output for now
+    #[cfg(not(debug_assertions))]
+    {
+        // Use our release plugins in release mode
         let mut path = std::path::PathBuf::from(".");
         path.push("target");
         path.push("release");
 
-    let _ = load_plugins_in_dir(&path, context);
+        if path.exists() {
+            search_paths.push(path);
+        }
+    }
+
+    // permit Nu finding and picking up development plugins
+    // if there are any first.
+    search_paths.reverse();
+    search_paths
+}
+
+fn load_plugins(context: &mut Context) -> Result<(), ShellError> {
+    let opts = glob::MatchOptions {
+        case_sensitive: false,
+        require_literal_separator: false,
+        require_literal_leading_dot: false,
+    };
+
+    set_env_from_config();
+
+    for path in search_paths() {
+        let mut pattern = path.to_path_buf();
+
+        pattern.push(std::path::Path::new("nu_plugin_[a-z]*"));
+
+        match glob::glob_with(&pattern.to_string_lossy(), opts) {
+            Err(_) => {}
+            Ok(binaries) => {
+                for bin in binaries.filter_map(Result::ok) {
+                    if !bin.is_file() {
+                        continue;
+                    }
+
+                    let bin_name = {
+                        if let Some(name) = bin.file_name() {
+                            match name.to_str() {
+                                Some(raw) => raw,
+                                None => continue,
+                            }
+                        } else {
+                            continue;
+                        }
+                    };
+
+                    let is_valid_name = {
+                        #[cfg(windows)]
+                        {
+                            bin_name
+                                .chars()
+                                .all(|c| c.is_ascii_alphabetic() || c == '_' || c == '.')
+                        }
+
+                        #[cfg(not(windows))]
+                        {
+                            bin_name
+                                .chars()
+                                .all(|c| c.is_ascii_alphabetic() || c == '_')
+                        }
+                    };
+
+                    let is_executable = {
+                        #[cfg(windows)]
+                        {
+                            bin_name.ends_with(".exe") || bin_name.ends_with(".bat")
+                        }
+
+                        #[cfg(not(windows))]
+                        {
+                            true
+                        }
+                    };
+
+                    if is_valid_name && is_executable {
+                        trace!("Trying {:?}", bin.display());
+
+                        // we are ok if this plugin load fails
+                        let _ = load_plugin(&bin, context);
+                    }
+                }
+            }
+        }
+    }
 
     Ok(())
 }
 
+pub struct History;
+
+impl History {
+    pub fn path() -> PathBuf {
+        const FNAME: &str = "history.txt";
+        config::user_data()
+            .map(|mut p| {
+                p.push(FNAME);
+                p
+            })
+            .unwrap_or(PathBuf::from(FNAME))
+    }
+}
+
 pub async fn cli() -> Result<(), Box<dyn Error>> {
     let mut context = Context::basic()?;
 
@@ -145,7 +252,7 @@ pub async fn cli() -> Result<(), Box<dyn Error>> {
         use crate::commands::*;
 
         context.add_commands(vec![
-            whole_stream_command(PS),
+            whole_stream_command(PWD),
             whole_stream_command(LS),
             whole_stream_command(CD),
             whole_stream_command(Size),
@@ -153,47 +260,70 @@ pub async fn cli() -> Result<(), Box<dyn Error>> {
             whole_stream_command(Next),
             whole_stream_command(Previous),
             whole_stream_command(Debug),
-            whole_stream_command(Lines),
             whole_stream_command(Shells),
             whole_stream_command(SplitColumn),
             whole_stream_command(SplitRow),
             whole_stream_command(Lines),
             whole_stream_command(Reject),
+            whole_stream_command(Reverse),
+            whole_stream_command(Append),
+            whole_stream_command(Prepend),
             whole_stream_command(Trim),
-            whole_stream_command(ToArray),
+            whole_stream_command(ToBSON),
             whole_stream_command(ToCSV),
             whole_stream_command(ToJSON),
+            whole_stream_command(ToSQLite),
+            whole_stream_command(ToDB),
             whole_stream_command(ToTOML),
+            whole_stream_command(ToTSV),
+            whole_stream_command(ToURL),
             whole_stream_command(ToYAML),
             whole_stream_command(SortBy),
+            whole_stream_command(GroupBy),
             whole_stream_command(Tags),
+            whole_stream_command(Count),
             whole_stream_command(First),
-            whole_stream_command(FromArray),
+            whole_stream_command(Last),
+            whole_stream_command(Env),
             whole_stream_command(FromCSV),
+            whole_stream_command(FromTSV),
+            whole_stream_command(FromSSV),
             whole_stream_command(FromINI),
+            whole_stream_command(FromBSON),
             whole_stream_command(FromJSON),
+            whole_stream_command(FromDB),
+            whole_stream_command(FromSQLite),
             whole_stream_command(FromTOML),
+            whole_stream_command(FromURL),
             whole_stream_command(FromXML),
             whole_stream_command(FromYAML),
+            whole_stream_command(FromYML),
             whole_stream_command(Pick),
             whole_stream_command(Get),
             per_item_command(Remove),
+            per_item_command(Fetch),
             per_item_command(Open),
+            per_item_command(Post),
             per_item_command(Where),
+            per_item_command(Echo),
             whole_stream_command(Config),
             whole_stream_command(SkipWhile),
             per_item_command(Enter),
+            per_item_command(Help),
+            per_item_command(History),
             whole_stream_command(Exit),
             whole_stream_command(Autoview),
+            whole_stream_command(Pivot),
             per_item_command(Cpy),
             whole_stream_command(Date),
             per_item_command(Mkdir),
             per_item_command(Move),
             whole_stream_command(Save),
             whole_stream_command(Table),
-            whole_stream_command(VTable),
             whole_stream_command(Version),
             whole_stream_command(Which),
+            #[cfg(data_processing_primitives)]
+            whole_stream_command(SplitBy),
         ]);
 
         #[cfg(feature = "clipboard")]
@@ -203,6 +333,7 @@ pub async fn cli() -> Result<(), Box<dyn Error>> {
             )]);
         }
     }
+
     let _ = load_plugins(&mut context);
 
     let config = Config::builder().color_mode(ColorMode::Forced).build();
@@ -213,124 +344,207 @@ pub async fn cli() -> Result<(), Box<dyn Error>> {
         let _ = ansi_term::enable_ansi_support();
     }
 
-    let _ = rl.load_history("history.txt");
+    // we are ok if history does not exist
+    let _ = rl.load_history(&History::path());
 
-    let ctrl_c = Arc::new(AtomicBool::new(false));
-    let cc = ctrl_c.clone();
+    let cc = context.ctrl_c.clone();
     ctrlc::set_handler(move || {
         cc.store(true, Ordering::SeqCst);
     })
     .expect("Error setting Ctrl-C handler");
     let mut ctrlcbreak = false;
     loop {
-        if ctrl_c.load(Ordering::SeqCst) {
-            ctrl_c.store(false, Ordering::SeqCst);
+        if context.ctrl_c.load(Ordering::SeqCst) {
+            context.ctrl_c.store(false, Ordering::SeqCst);
             continue;
         }
 
         let cwd = context.shell_manager.path();
 
-        rl.set_helper(Some(crate::shell::Helper::new(
-            context.shell_manager.clone(),
-        )));
+        rl.set_helper(Some(crate::shell::Helper::new(context.clone())));
 
-        let readline = rl.readline(&format!(
+        let edit_mode = config::config(Tag::unknown())?
+            .get("edit_mode")
+            .map(|s| match s.as_string().unwrap().as_ref() {
+                "vi" => EditMode::Vi,
+                "emacs" => EditMode::Emacs,
+                _ => EditMode::Emacs,
+            })
+            .unwrap_or(EditMode::Emacs);
+
+        rl.set_edit_mode(edit_mode);
+
+        // Register Ctrl-r for history fuzzy search
+        // rustyline doesn't support custom commands, so we override Ctrl-D (EOF)
+        // https://github.com/nushell/nushell/issues/689
+        #[cfg(all(not(windows), feature = "crossterm"))]
+        rl.bind_sequence(rustyline::KeyPress::Ctrl('R'), rustyline::Cmd::EndOfFile);
+        // Redefine Ctrl-D to same command as Ctrl-C
+        rl.bind_sequence(rustyline::KeyPress::Ctrl('D'), rustyline::Cmd::Interrupt);
+
+        let prompt = &format!(
             "{}{}> ",
             cwd,
             match current_branch() {
                 Some(s) => format!("({})", s),
                 None => "".to_string(),
             }
-        ));
+        );
+        let mut initial_command = Some(String::new());
+        let mut readline = Err(ReadlineError::Eof);
+        while let Some(ref cmd) = initial_command {
+            readline = rl.readline_with_initial(prompt, (&cmd, ""));
+            if let Err(ReadlineError::Eof) = &readline {
+                // Fuzzy search in history
+                let lines = rl.history().iter().rev().map(|s| s.as_str()).collect();
+                let selection = interactive_fuzzy_search(&lines, 5); // Clears last line with prompt
+                match selection {
+                    SelectionResult::Selected(line) => {
+                        println!("{}{}", &prompt, &line); // TODO: colorize prompt
+                        readline = Ok(line.clone());
+                        initial_command = None;
+                    }
+                    SelectionResult::Edit(line) => {
+                        initial_command = Some(line);
+                    }
+                    SelectionResult::NoSelection => {
+                        readline = Ok("".to_string());
+                        initial_command = None;
+                    }
+                }
+            } else {
+                initial_command = None;
+            }
+        }
 
         match process_line(readline, &mut context).await {
             LineResult::Success(line) => {
                 rl.add_history_entry(line.clone());
+                let _ = rl.save_history(&History::path());
             }
 
             LineResult::CtrlC => {
+                let config_ctrlc_exit = config::config(Tag::unknown())?
+                    .get("ctrlc_exit")
+                    .map(|s| match s.as_string().unwrap().as_ref() {
+                        "true" => true,
+                        _ => false,
+                    })
+                    .unwrap_or(false); // default behavior is to allow CTRL-C spamming similar to other shells
+
+                if !config_ctrlc_exit {
+                    continue;
+                }
+
                 if ctrlcbreak {
+                    let _ = rl.save_history(&History::path());
                     std::process::exit(0);
                 } else {
-                    context
-                        .host
-                        .lock()
-                        .unwrap()
-                        .stdout("CTRL-C pressed (again to quit)");
+                    context.with_host(|host| host.stdout("CTRL-C pressed (again to quit)"));
                     ctrlcbreak = true;
                     continue;
                 }
             }
 
-            LineResult::Error(mut line, err) => {
+            LineResult::Error(line, err) => {
                 rl.add_history_entry(line.clone());
-                let diag = err.to_diagnostic();
-                let host = context.host.lock().unwrap();
-                let writer = host.err_termcolor();
-                line.push_str(" ");
-                let files = crate::parser::Files::new(line);
-                let _ = std::panic::catch_unwind(move || {
-                    let _ = language_reporting::emit(
-                        &mut writer.lock(),
-                        &files,
-                        &diag,
-                        &language_reporting::DefaultConfig,
-                    );
-                });
+                let _ = rl.save_history(&History::path());
+
+                context.with_host(|host| {
+                    print_err(err, host, &Text::from(line));
+                })
             }
 
             LineResult::Break => {
                 break;
             }
-
-            LineResult::FatalError(_, err) => {
-                context
-                    .host
-                    .lock()
-                    .unwrap()
-                    .stdout(&format!("A surprising fatal error occurred.\n{:?}", err));
-            }
         }
         ctrlcbreak = false;
     }
-    rl.save_history("history.txt")?;
+
+    // we are ok if we can not save history
+    let _ = rl.save_history(&History::path());
 
     Ok(())
 }
 
+fn chomp_newline(s: &str) -> &str {
+    if s.ends_with('\n') {
+        &s[..s.len() - 1]
+    } else {
+        s
+    }
+}
+
+fn set_env_from_config() {
+    let config = crate::data::config::read(Tag::unknown(), &None).unwrap();
+
+    if config.contains_key("env") {
+        // Clear the existing vars, we're about to replace them
+        for (key, _value) in std::env::vars() {
+            std::env::remove_var(key);
+        }
+
+        let value = config.get("env");
+
+        match value {
+            Some(Tagged {
+                item: Value::Row(r),
+                ..
+            }) => {
+                for (k, v) in &r.entries {
+                    match v.as_string() {
+                        Ok(value_string) => {
+                            std::env::set_var(k, value_string);
+                        }
+                        _ => {}
+                    }
+                }
+            }
+            _ => {}
+        }
+    }
+
+    if config.contains_key("path") {
+        // Override the path with what they give us from config
+        let value = config.get("path");
+
+        match value {
+            Some(value) => match value {
+                Tagged {
+                    item: Value::Table(table),
+                    ..
+                } => {
+                    let mut paths = vec![];
+                    for val in table {
+                        let path_str = val.as_string();
+                        match path_str {
+                            Err(_) => {}
+                            Ok(path_str) => {
+                                paths.push(PathBuf::from(path_str));
+                            }
+                        }
+                    }
+                    let path_os_string = std::env::join_paths(&paths);
+                    match path_os_string {
+                        Ok(path_os_string) => {
+                            std::env::set_var("PATH", path_os_string);
+                        }
+                        Err(_) => {}
+                    }
+                }
+                _ => {}
+            },
+            None => {}
+        }
+    }
+}
+
 enum LineResult {
     Success(String),
     Error(String, ShellError),
     CtrlC,
     Break,
-
-    #[allow(unused)]
-    FatalError(String, ShellError),
-}
-
-impl std::ops::Try for LineResult {
-    type Ok = Option<String>;
-    type Error = (String, ShellError);
-
-    fn into_result(self) -> Result<Option<String>, (String, ShellError)> {
-        match self {
-            LineResult::Success(s) => Ok(Some(s)),
-            LineResult::Error(string, err) => Err((string, err)),
-            LineResult::Break => Ok(None),
-            LineResult::CtrlC => Ok(None),
-            LineResult::FatalError(string, err) => Err((string, err)),
-        }
-    }
-    fn from_error(v: (String, ShellError)) -> Self {
-        LineResult::Error(v.0, v.1)
-    }
-
-    fn from_ok(v: Option<String>) -> Self {
-        match v {
-            None => LineResult::Break,
-            Some(v) => LineResult::Success(v),
-        }
-    }
 }
 
 async fn process_line(readline: Result<String, ReadlineError>, ctx: &mut Context) -> LineResult {
@@ -338,9 +552,11 @@ async fn process_line(readline: Result<String, ReadlineError>, ctx: &mut Context
         Ok(line) if line.trim() == "" => LineResult::Success(line.clone()),
 
         Ok(line) => {
+            let line = chomp_newline(line);
+
             let result = match crate::parser::parse(&line) {
                 Err(err) => {
-                    return LineResult::Error(line.clone(), err);
+                    return LineResult::Error(line.to_string(), err);
                 }
 
                 Ok(val) => val,
@@ -349,27 +565,34 @@ async fn process_line(readline: Result<String, ReadlineError>, ctx: &mut Context
             debug!("=== Parsed ===");
             debug!("{:#?}", result);
 
-            let mut pipeline = classify_pipeline(&result, ctx, &Text::from(line))
-                .map_err(|err| (line.clone(), err))?;
+            let mut pipeline = match classify_pipeline(&result, ctx, &Text::from(line)) {
+                Ok(pipeline) => pipeline,
+                Err(err) => return LineResult::Error(line.to_string(), err),
+            };
 
             match pipeline.commands.last() {
                 Some(ClassifiedCommand::External(_)) => {}
                 _ => pipeline
                     .commands
+                    .item
                     .push(ClassifiedCommand::Internal(InternalCommand {
-                        command: whole_stream_command(autoview::Autoview),
-                        name_span: Span::unknown(),
+                        name: "autoview".to_string(),
+                        name_tag: Tag::unknown(),
                         args: hir::Call::new(
                             Box::new(hir::Expression::synthetic_string("autoview")),
                             None,
                             None,
-                        ),
+                        )
+                        .spanned_unknown(),
                     })),
             }
 
             let mut input = ClassifiedInputStream::new();
+            let mut iter = pipeline.commands.item.into_iter().peekable();
 
-            let mut iter = pipeline.commands.into_iter().peekable();
+            // Check the config to see if we need to update the path
+            // TODO: make sure config is cached so we don't path this load every call
+            set_env_from_config();
 
             loop {
                 let item: Option<ClassifiedCommand> = iter.next();
@@ -378,16 +601,24 @@ async fn process_line(readline: Result<String, ReadlineError>, ctx: &mut Context
                 input = match (item, next) {
                     (None, _) => break,
 
+                    (Some(ClassifiedCommand::Dynamic(_)), _)
+                    | (_, Some(ClassifiedCommand::Dynamic(_))) => {
+                        return LineResult::Error(
+                            line.to_string(),
+                            ShellError::unimplemented("Dynamic commands"),
+                        )
+                    }
+
                     (Some(ClassifiedCommand::Expr(_)), _) => {
                         return LineResult::Error(
-                            line.clone(),
+                            line.to_string(),
                             ShellError::unimplemented("Expression-only commands"),
                         )
                     }
 
                     (_, Some(ClassifiedCommand::Expr(_))) => {
                         return LineResult::Error(
-                            line.clone(),
+                            line.to_string(),
                             ShellError::unimplemented("Expression-only commands"),
                         )
                     }
@@ -395,22 +626,46 @@ async fn process_line(readline: Result<String, ReadlineError>, ctx: &mut Context
                     (
                         Some(ClassifiedCommand::Internal(left)),
                         Some(ClassifiedCommand::External(_)),
-                    ) => match left.run(ctx, input, Text::from(line)).await {
+                    ) => match left.run(ctx, input, Text::from(line)) {
                         Ok(val) => ClassifiedInputStream::from_input_stream(val),
-                        Err(err) => return LineResult::Error(line.clone(), err),
+                        Err(err) => return LineResult::Error(line.to_string(), err),
                     },
 
                     (Some(ClassifiedCommand::Internal(left)), Some(_)) => {
-                        match left.run(ctx, input, Text::from(line)).await {
+                        match left.run(ctx, input, Text::from(line)) {
                             Ok(val) => ClassifiedInputStream::from_input_stream(val),
-                            Err(err) => return LineResult::Error(line.clone(), err),
+                            Err(err) => return LineResult::Error(line.to_string(), err),
                         }
                     }
 
                     (Some(ClassifiedCommand::Internal(left)), None) => {
-                        match left.run(ctx, input, Text::from(line)).await {
-                            Ok(val) => ClassifiedInputStream::from_input_stream(val),
-                            Err(err) => return LineResult::Error(line.clone(), err),
+                        match left.run(ctx, input, Text::from(line)) {
+                            Ok(val) => {
+                                use futures::stream::TryStreamExt;
+
+                                let mut output_stream: OutputStream = val.into();
+                                loop {
+                                    match output_stream.try_next().await {
+                                        Ok(Some(ReturnSuccess::Value(Tagged {
+                                            item: Value::Error(e),
+                                            ..
+                                        }))) => {
+                                            return LineResult::Error(line.to_string(), e);
+                                        }
+                                        Ok(Some(_item)) => {
+                                            if ctx.ctrl_c.load(Ordering::SeqCst) {
+                                                break;
+                                            }
+                                        }
+                                        _ => {
+                                            break;
+                                        }
+                                    }
+                                }
+
+                                return LineResult::Success(line.to_string());
+                            }
+                            Err(err) => return LineResult::Error(line.to_string(), err),
                         }
                     }
 
@@ -419,32 +674,29 @@ async fn process_line(readline: Result<String, ReadlineError>, ctx: &mut Context
                         Some(ClassifiedCommand::External(_)),
                     ) => match left.run(ctx, input, StreamNext::External).await {
                         Ok(val) => val,
-                        Err(err) => return LineResult::Error(line.clone(), err),
+                        Err(err) => return LineResult::Error(line.to_string(), err),
                     },
 
                     (Some(ClassifiedCommand::External(left)), Some(_)) => {
                         match left.run(ctx, input, StreamNext::Internal).await {
                             Ok(val) => val,
-                            Err(err) => return LineResult::Error(line.clone(), err),
+                            Err(err) => return LineResult::Error(line.to_string(), err),
                         }
                     }
 
                     (Some(ClassifiedCommand::External(left)), None) => {
                         match left.run(ctx, input, StreamNext::Last).await {
                             Ok(val) => val,
-                            Err(err) => return LineResult::Error(line.clone(), err),
-                        }
+                            Err(err) => return LineResult::Error(line.to_string(), err),
                         }
                     }
+                };
             }
 
-            LineResult::Success(line.clone())
+            LineResult::Success(line.to_string())
         }
         Err(ReadlineError::Interrupted) => LineResult::CtrlC,
-        Err(ReadlineError::Eof) => {
-            println!("CTRL-D");
-            LineResult::Break
-        }
+        Err(ReadlineError::Eof) => LineResult::Break,
         Err(err) => {
             println!("Error: {:?}", err);
             LineResult::Break
@@ -457,96 +709,62 @@ fn classify_pipeline(
     context: &Context,
     source: &Text,
 ) -> Result<ClassifiedPipeline, ShellError> {
-    let pipeline = pipeline.as_pipeline()?;
+    let mut pipeline_list = vec![pipeline.clone()];
+    let mut iterator = TokensIterator::all(&mut pipeline_list, pipeline.span());
 
-    let Pipeline { parts, .. } = pipeline;
+    let result = expand_syntax(
+        &PipelineShape,
+        &mut iterator,
+        &context.expand_context(source),
+    )
+    .map_err(|err| err.into());
 
-    let commands: Result<Vec<_>, ShellError> = parts
-        .iter()
-        .map(|item| classify_command(&item, context, &source))
-        .collect();
-
-    Ok(ClassifiedPipeline {
-        commands: commands?,
-    })
+    if log_enabled!(target: "nu::expand_syntax", log::Level::Debug) {
+        println!("");
+        ptree::print_tree(&iterator.expand_tracer().print(source.clone())).unwrap();
+        println!("");
     }
 
-fn classify_command(
-    command: &PipelineElement,
-    context: &Context,
-    source: &Text,
-) -> Result<ClassifiedCommand, ShellError> {
-    let call = command.call();
-
-    match call {
-        // If the command starts with `^`, treat it as an external command no matter what
-        call if call.head().is_external() => {
-            let name_span = call.head().expect_external();
-            let name = name_span.slice(source);
-
-            Ok(external_command(call, source, name.tagged(name_span)))
-        }
-
-        // Otherwise, if the command is a bare word, we'll need to triage it
-        call if call.head().is_bare() => {
-            let head = call.head();
-            let name = head.source(source);
-
-            match context.has_command(name) {
-                // if the command is in the registry, it's an internal command
-                true => {
-                    let command = context.get_command(name);
-                    let config = command.signature();
-
-                    trace!(target: "nu::build_pipeline", "classifying {:?}", config);
-
-                    let args: hir::Call = config.parse_args(call, context.registry(), source)?;
-
-                    Ok(ClassifiedCommand::Internal(InternalCommand {
-                        command,
-                        name_span: head.span().clone(),
-                        args,
-                    }))
-                }
-
-                // otherwise, it's an external command
-                false => Ok(external_command(call, source, name.tagged(head.span()))),
-            }
-        }
-
-        // If the command is something else (like a number or a variable), that is currently unsupported.
-        // We might support `$somevar` as a curried command in the future.
-        call => Err(ShellError::invalid_command(call.head().span())),
-    }
+    result
 }
 
 // Classify this command as an external command, which doesn't give special meaning
 // to nu syntactic constructs, and passes all arguments to the external command as
 // strings.
-fn external_command(
-    call: &Tagged<CallNode>,
-    source: &Text,
+pub(crate) fn external_command(
+    tokens: &mut TokensIterator,
+    context: &ExpandContext,
     name: Tagged<&str>,
-) -> ClassifiedCommand {
-    let arg_list_strings: Vec<Tagged<String>> = match call.children() {
-        Some(args) => args
-            .iter()
-            .filter_map(|i| match i {
-                TokenNode::Whitespace(_) => None,
-                other => Some(Tagged::from_simple_spanned_item(
-                    other.as_external_arg(source),
-                    other.span(),
-                )),
-            })
-            .collect(),
-        None => vec![],
-    };
+) -> Result<ClassifiedCommand, ParseError> {
+    let Spanned { item, span } = expand_syntax(&ExternalTokensShape, tokens, context)?;
 
-    let (name, tag) = name.into_parts();
-
-    ClassifiedCommand::External(ExternalCommand {
+    Ok(ClassifiedCommand::External(ExternalCommand {
         name: name.to_string(),
-        name_span: tag.span,
-        args: arg_list_strings,
+        name_tag: name.tag(),
+        args: item
+            .iter()
+            .map(|x| Tagged {
+                tag: x.span.into(),
+                item: x.item.clone(),
             })
+            .collect::<Vec<_>>()
+            .spanned(span),
+    }))
+}
+
+pub fn print_err(err: ShellError, host: &dyn Host, source: &Text) {
+    let diag = err.to_diagnostic();
+
+    let writer = host.err_termcolor();
+    let mut source = source.to_string();
+    source.push_str(" ");
+    let files = crate::parser::Files::new(source);
+    let _ = std::panic::catch_unwind(move || {
+        let _ = language_reporting::emit(
+            &mut writer.lock(),
+            &files,
+            &diag,
+            &language_reporting::DefaultConfig,
+        );
+    });
 }

src/commands.rs

@@ -1,109 +1,160 @@
 #[macro_use]
-crate mod macros;
+pub(crate) mod macros;
 
-crate mod args;
-crate mod autoview;
-crate mod cd;
-crate mod classified;
-crate mod clip;
-crate mod command;
-crate mod config;
-crate mod cp;
-crate mod date;
-crate mod debug;
-crate mod enter;
-crate mod exit;
-crate mod first;
-crate mod from_array;
-crate mod from_csv;
-crate mod from_ini;
-crate mod from_json;
-crate mod from_toml;
-crate mod from_xml;
-crate mod from_yaml;
-crate mod get;
-crate mod lines;
-crate mod ls;
-crate mod mkdir;
-crate mod mv;
-crate mod next;
-crate mod nth;
-crate mod open;
-crate mod pick;
-crate mod plugin;
-crate mod prev;
-crate mod ps;
-crate mod reject;
-crate mod rm;
-crate mod save;
-crate mod shells;
-crate mod size;
-crate mod skip_while;
-crate mod sort_by;
-crate mod split_column;
-crate mod split_row;
-crate mod table;
-crate mod tags;
-crate mod to_array;
-crate mod to_csv;
-crate mod to_json;
-crate mod to_toml;
-crate mod to_yaml;
-crate mod trim;
-crate mod version;
-crate mod vtable;
-crate mod where_;
-crate mod which_;
+pub(crate) mod append;
+pub(crate) mod args;
+pub(crate) mod autoview;
+pub(crate) mod cd;
+pub(crate) mod classified;
+pub(crate) mod clip;
+pub(crate) mod command;
+pub(crate) mod config;
+pub(crate) mod count;
+pub(crate) mod cp;
+pub(crate) mod date;
+pub(crate) mod debug;
+pub(crate) mod echo;
+pub(crate) mod enter;
+pub(crate) mod env;
+pub(crate) mod exit;
+pub(crate) mod fetch;
+pub(crate) mod first;
+pub(crate) mod from_bson;
+pub(crate) mod from_csv;
+pub(crate) mod from_ini;
+pub(crate) mod from_json;
+pub(crate) mod from_sqlite;
+pub(crate) mod from_ssv;
+pub(crate) mod from_toml;
+pub(crate) mod from_tsv;
+pub(crate) mod from_url;
+pub(crate) mod from_xml;
+pub(crate) mod from_yaml;
+pub(crate) mod get;
+pub(crate) mod group_by;
+pub(crate) mod help;
+pub(crate) mod history;
+pub(crate) mod last;
+pub(crate) mod lines;
+pub(crate) mod ls;
+pub(crate) mod mkdir;
+pub(crate) mod mv;
+pub(crate) mod next;
+pub(crate) mod nth;
+pub(crate) mod open;
+pub(crate) mod pick;
+pub(crate) mod pivot;
+pub(crate) mod plugin;
+pub(crate) mod post;
+pub(crate) mod prepend;
+pub(crate) mod prev;
+pub(crate) mod pwd;
+pub(crate) mod reject;
+pub(crate) mod reverse;
+pub(crate) mod rm;
+pub(crate) mod save;
+pub(crate) mod shells;
+pub(crate) mod size;
+pub(crate) mod skip_while;
+pub(crate) mod sort_by;
 
-crate use autoview::Autoview;
-crate use cd::CD;
-crate use command::{
+#[cfg(data_processing_primitives)]
+pub(crate) mod split_by;
+
+pub(crate) mod split_column;
+pub(crate) mod split_row;
+pub(crate) mod table;
+pub(crate) mod tags;
+pub(crate) mod to_bson;
+pub(crate) mod to_csv;
+pub(crate) mod to_json;
+pub(crate) mod to_sqlite;
+pub(crate) mod to_toml;
+pub(crate) mod to_tsv;
+pub(crate) mod to_url;
+pub(crate) mod to_yaml;
+pub(crate) mod trim;
+pub(crate) mod version;
+pub(crate) mod where_;
+pub(crate) mod which_;
+
+pub(crate) use autoview::Autoview;
+pub(crate) use cd::CD;
+pub(crate) use command::{
     per_item_command, whole_stream_command, Command, PerItemCommand, RawCommandArgs,
     UnevaluatedCallInfo, WholeStreamCommand,
 };
-crate use config::Config;
-crate use cp::Cpy;
-crate use date::Date;
-crate use debug::Debug;
-crate use enter::Enter;
-crate use exit::Exit;
-crate use first::First;
-crate use from_array::FromArray;
-crate use from_csv::FromCSV;
-crate use from_ini::FromINI;
-crate use from_json::FromJSON;
-crate use from_toml::FromTOML;
-crate use from_xml::FromXML;
-crate use from_yaml::FromYAML;
-crate use get::Get;
-crate use lines::Lines;
-crate use ls::LS;
-crate use mkdir::Mkdir;
-crate use mv::Move;
-crate use next::Next;
-crate use nth::Nth;
-crate use open::Open;
-crate use pick::Pick;
-crate use prev::Previous;
-crate use ps::PS;
-crate use reject::Reject;
-crate use rm::Remove;
-crate use save::Save;
-crate use shells::Shells;
-crate use size::Size;
-crate use skip_while::SkipWhile;
-crate use sort_by::SortBy;
-crate use split_column::SplitColumn;
-crate use split_row::SplitRow;
-crate use table::Table;
-crate use tags::Tags;
-crate use to_array::ToArray;
-crate use to_csv::ToCSV;
-crate use to_json::ToJSON;
-crate use to_toml::ToTOML;
-crate use to_yaml::ToYAML;
-crate use trim::Trim;
-crate use version::Version;
-crate use vtable::VTable;
-crate use where_::Where;
-crate use which_::Which;
+
+pub(crate) use append::Append;
+pub(crate) use classified::ClassifiedCommand;
+pub(crate) use config::Config;
+pub(crate) use count::Count;
+pub(crate) use cp::Cpy;
+pub(crate) use date::Date;
+pub(crate) use debug::Debug;
+pub(crate) use echo::Echo;
+pub(crate) use enter::Enter;
+pub(crate) use env::Env;
+pub(crate) use exit::Exit;
+pub(crate) use fetch::Fetch;
+pub(crate) use first::First;
+pub(crate) use from_bson::FromBSON;
+pub(crate) use from_csv::FromCSV;
+pub(crate) use from_ini::FromINI;
+pub(crate) use from_json::FromJSON;
+pub(crate) use from_sqlite::FromDB;
+pub(crate) use from_sqlite::FromSQLite;
+pub(crate) use from_ssv::FromSSV;
+pub(crate) use from_toml::FromTOML;
+pub(crate) use from_tsv::FromTSV;
+pub(crate) use from_url::FromURL;
+pub(crate) use from_xml::FromXML;
+pub(crate) use from_yaml::FromYAML;
+pub(crate) use from_yaml::FromYML;
+pub(crate) use get::Get;
+pub(crate) use group_by::GroupBy;
+pub(crate) use help::Help;
+pub(crate) use history::History;
+pub(crate) use last::Last;
+pub(crate) use lines::Lines;
+pub(crate) use ls::LS;
+pub(crate) use mkdir::Mkdir;
+pub(crate) use mv::Move;
+pub(crate) use next::Next;
+pub(crate) use nth::Nth;
+pub(crate) use open::Open;
+pub(crate) use pick::Pick;
+pub(crate) use pivot::Pivot;
+pub(crate) use post::Post;
+pub(crate) use prepend::Prepend;
+pub(crate) use prev::Previous;
+pub(crate) use pwd::PWD;
+pub(crate) use reject::Reject;
+pub(crate) use reverse::Reverse;
+pub(crate) use rm::Remove;
+pub(crate) use save::Save;
+pub(crate) use shells::Shells;
+pub(crate) use size::Size;
+pub(crate) use skip_while::SkipWhile;
+pub(crate) use sort_by::SortBy;
+
+#[cfg(data_processing_primitives)]
+pub(crate) use split_by::SplitBy;
+
+pub(crate) use split_column::SplitColumn;
+pub(crate) use split_row::SplitRow;
+pub(crate) use table::Table;
+pub(crate) use tags::Tags;
+pub(crate) use to_bson::ToBSON;
+pub(crate) use to_csv::ToCSV;
+pub(crate) use to_json::ToJSON;
+pub(crate) use to_sqlite::ToDB;
+pub(crate) use to_sqlite::ToSQLite;
+pub(crate) use to_toml::ToTOML;
+pub(crate) use to_tsv::ToTSV;
+pub(crate) use to_url::ToURL;
+pub(crate) use to_yaml::ToYAML;
+pub(crate) use trim::Trim;
+pub(crate) use version::Version;
+pub(crate) use where_::Where;
+pub(crate) use which_::Which;

src/commands/append.rs

@@ -0,0 +1,47 @@
+use crate::commands::WholeStreamCommand;
+use crate::errors::ShellError;
+use crate::parser::CommandRegistry;
+use crate::prelude::*;
+
+#[derive(Deserialize)]
+struct AppendArgs {
+    row: Tagged<Value>,
+}
+
+pub struct Append;
+
+impl WholeStreamCommand for Append {
+    fn name(&self) -> &str {
+        "append"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("append").required(
+            "row value",
+            SyntaxShape::Any,
+            "the value of the row to append to the table",
+        )
+    }
+
+    fn usage(&self) -> &str {
+        "Append the given row to the table"
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        args.process(registry, append)?.run()
+    }
+}
+
+fn append(
+    AppendArgs { row }: AppendArgs,
+    RunnableContext { input, .. }: RunnableContext,
+) -> Result<OutputStream, ShellError> {
+    let mut after: VecDeque<Tagged<Value>> = VecDeque::new();
+    after.push_back(row);
+
+    Ok(OutputStream::from_input(input.values.chain(after)))
+}

src/commands/args.rs

@@ -1,17 +1,8 @@
-use crate::object::Value;
+use crate::data::Value;
 
-#[allow(unused)]
 #[derive(Debug)]
-pub enum LogLevel {
-    Trace,
-    Debug,
-    Info,
-    Warn,
-    Error,
-    Fatal,
-}
+pub enum LogLevel {}
 
-#[allow(unused)]
 #[derive(Debug)]
 pub struct LogItem {
     level: LogLevel,

src/commands/autoview.rs

@@ -1,9 +1,14 @@
 use crate::commands::{RawCommandArgs, WholeStreamCommand};
 use crate::errors::ShellError;
+use crate::parser::hir::{Expression, NamedArguments};
 use crate::prelude::*;
+use futures::stream::TryStreamExt;
+use std::sync::atomic::Ordering;
 
 pub struct Autoview;
 
+const STREAM_PAGE_SIZE: u64 = 50;
+
 #[derive(Deserialize)]
 pub struct AutoviewArgs {}
 
@@ -12,6 +17,14 @@ impl WholeStreamCommand for Autoview {
         "autoview"
     }
 
+    fn signature(&self) -> Signature {
+        Signature::build("autoview")
+    }
+
+    fn usage(&self) -> &str {
+        "View the contents of the pipeline as a table or list."
+    }
+
     fn run(
         &self,
         args: CommandArgs,
@@ -19,76 +32,142 @@ impl WholeStreamCommand for Autoview {
     ) -> Result<OutputStream, ShellError> {
         Ok(args.process_raw(registry, autoview)?.run())
     }
-
-    fn signature(&self) -> Signature {
-        Signature::build("autoview")
-    }
 }
 
 pub fn autoview(
     AutoviewArgs {}: AutoviewArgs,
-    mut context: RunnableContext,
+    context: RunnableContext,
     raw: RawCommandArgs,
 ) -> Result<OutputStream, ShellError> {
-    Ok(OutputStream::new(async_stream_block! {
-        let input = context.input.drain_vec().await;
+    let binary = context.get_command("binaryview");
+    let text = context.get_command("textview");
+    let table = context.get_command("table");
 
-        if input.len() > 0 {
-            if let Tagged {
-                item: Value::Binary(_),
-                ..
-            } = input[0usize]
-            {
-                let binary = context.expect_command("binaryview");
-                let result = binary.run(raw.with_input(input), &context.commands);
+    Ok(OutputStream::new(async_stream! {
+        let mut output_stream: OutputStream = context.input.into();
+
+        match output_stream.try_next().await {
+            Ok(Some(x)) => {
+                match output_stream.try_next().await {
+                    Ok(Some(y)) => {
+                        let ctrl_c = context.ctrl_c.clone();
+                        let stream = async_stream! {
+                            yield Ok(x);
+                            yield Ok(y);
+
+                            loop {
+                                match output_stream.try_next().await {
+                                    Ok(Some(z)) => {
+                                        if ctrl_c.load(Ordering::SeqCst) {
+                                            break;
+                                        }
+                                        yield Ok(z);
+                                    }
+                                    _ => break,
+                                }
+                            }
+                        };
+                        if let Some(table) = table {
+                            let mut new_output_stream: OutputStream = stream.to_output_stream();
+                            let mut finished = false;
+                            let mut current_idx = 0;
+                            loop {
+                                let mut new_input = VecDeque::new();
+
+                                for _ in 0..STREAM_PAGE_SIZE {
+                                    match new_output_stream.try_next().await {
+
+                                        Ok(Some(a)) => {
+                                            if let ReturnSuccess::Value(v) = a {
+                                                new_input.push_back(v);
+                                            }
+                                        }
+                                        _ => {
+                                            finished = true;
+                                            break;
+                                        }
+                                    }
+                                }
+
+                                let raw = raw.clone();
+
+                                let mut command_args = raw.with_input(new_input.into());
+                                let mut named_args = NamedArguments::new();
+                                named_args.insert_optional("start_number", Some(Expression::number(current_idx, Tag::unknown())));
+                                command_args.call_info.args.named = Some(named_args);
+
+                                let result = table.run(command_args, &context.commands);
                                 result.collect::<Vec<_>>().await;
-            } else if is_single_text_value(&input) {
-                let text = context.expect_command("textview");
-                let result = text.run(raw.with_input(input), &context.commands);
-                result.collect::<Vec<_>>().await;
-            } else if equal_shapes(&input) {
-                let table = context.expect_command("table");
-                let result = table.run(raw.with_input(input), &context.commands);
+
+                                if finished {
+                                    break;
+                                } else {
+                                    current_idx += STREAM_PAGE_SIZE;
+                                }
+                            }
+                        }
+                    }
+                    _ => {
+                        if let ReturnSuccess::Value(x) = x {
+                            match x {
+                                Tagged {
+                                    item: Value::Primitive(Primitive::String(ref s)),
+                                    tag: Tag { anchor, span },
+                                } if anchor.is_some() => {
+                                    if let Some(text) = text {
+                                        let mut stream = VecDeque::new();
+                                        stream.push_back(Value::string(s).tagged(Tag { anchor, span }));
+                                        let result = text.run(raw.with_input(stream.into()), &context.commands);
                                         result.collect::<Vec<_>>().await;
                                     } else {
-                let table = context.expect_command("table");
-                let result = table.run(raw.with_input(input), &context.commands);
-                result.collect::<Vec<_>>().await;
+                                        println!("{}", s);
                                     }
                                 }
+                                Tagged {
+                                    item: Value::Primitive(Primitive::String(s)),
+                                    ..
+                                } => {
+                                    println!("{}", s);
+                                }
+
+                                Tagged { item: Value::Primitive(Primitive::Binary(ref b)), .. } => {
+                                    if let Some(binary) = binary {
+                                        let mut stream = VecDeque::new();
+                                        stream.push_back(x.clone());
+                                        let result = binary.run(raw.with_input(stream.into()), &context.commands);
+                                        result.collect::<Vec<_>>().await;
+                                    } else {
+                                        use pretty_hex::*;
+                                        println!("{:?}", b.hex_dump());
+                                    }
+                                }
+
+                                Tagged { item: Value::Error(e), .. } => {
+                                    yield Err(e);
+                                }
+                                Tagged { item: ref item, .. } => {
+                                    if let Some(table) = table {
+                                        let mut stream = VecDeque::new();
+                                        stream.push_back(x.clone());
+                                        let result = table.run(raw.with_input(stream.into()), &context.commands);
+                                        result.collect::<Vec<_>>().await;
+                                    } else {
+                                        println!("{:?}", item);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            _ => {
+                //println!("<no results>");
+            }
+        }
+
+        // Needed for async_stream to type check
+        if false {
+            yield ReturnSuccess::value(Value::nothing().tagged_unknown());
+        }
     }))
 }
-
-fn equal_shapes(input: &Vec<Tagged<Value>>) -> bool {
-    let mut items = input.iter();
-
-    let item = match items.next() {
-        Some(item) => item,
-        None => return false,
-    };
-
-    let desc = item.data_descriptors();
-
-    for item in items {
-        if desc != item.data_descriptors() {
-            return false;
-        }
-    }
-
-    true
-}
-
-fn is_single_text_value(input: &Vec<Tagged<Value>>) -> bool {
-    if input.len() != 1 {
-        return false;
-    }
-    if let Tagged {
-        item: Value::Primitive(Primitive::String(_)),
-        ..
-    } = input[0]
-    {
-        true
-    } else {
-        false
-    }
-}

src/commands/cd.rs

@@ -5,6 +5,22 @@ use crate::prelude::*;
 pub struct CD;
 
 impl WholeStreamCommand for CD {
+    fn name(&self) -> &str {
+        "cd"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("cd").optional(
+            "directory",
+            SyntaxShape::Path,
+            "the directory to change to",
+        )
+    }
+
+    fn usage(&self) -> &str {
+        "Change to a new path."
+    }
+
     fn run(
         &self,
         args: CommandArgs,
@@ -12,14 +28,6 @@ impl WholeStreamCommand for CD {
     ) -> Result<OutputStream, ShellError> {
         cd(args, registry)
     }
-
-    fn name(&self) -> &str {
-        "cd"
-    }
-
-    fn signature(&self) -> Signature {
-        Signature::build("cd").optional("directory", SyntaxType::Path)
-    }
 }
 
 fn cd(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {

src/commands/classified.rs

@@ -1,12 +1,13 @@
-use crate::commands::Command;
 use crate::parser::{hir, TokenNode};
 use crate::prelude::*;
 use bytes::{BufMut, BytesMut};
+use derive_new::new;
 use futures::stream::StreamExt;
 use futures_codec::{Decoder, Encoder, Framed};
+use itertools::Itertools;
 use log::{log_enabled, trace};
+use std::fmt;
 use std::io::{Error, ErrorKind};
-use std::sync::Arc;
 use subprocess::Exec;
 
 /// A simple `Codec` implementation that splits up data into lines.
@@ -45,27 +46,27 @@ impl Decoder for LinesCodec {
     }
 }
 
-crate struct ClassifiedInputStream {
-    crate objects: InputStream,
-    crate stdin: Option<std::fs::File>,
+pub(crate) struct ClassifiedInputStream {
+    pub(crate) objects: InputStream,
+    pub(crate) stdin: Option<std::fs::File>,
 }
 
 impl ClassifiedInputStream {
-    crate fn new() -> ClassifiedInputStream {
+    pub(crate) fn new() -> ClassifiedInputStream {
         ClassifiedInputStream {
-            objects: VecDeque::new().into(),
+            objects: vec![Value::nothing().tagged(Tag::unknown())].into(),
             stdin: None,
         }
     }
 
-    crate fn from_input_stream(stream: impl Into<InputStream>) -> ClassifiedInputStream {
+    pub(crate) fn from_input_stream(stream: impl Into<InputStream>) -> ClassifiedInputStream {
         ClassifiedInputStream {
             objects: stream.into(),
             stdin: None,
         }
     }
 
-    crate fn from_stdout(stdout: std::fs::File) -> ClassifiedInputStream {
+    pub(crate) fn from_stdout(stdout: std::fs::File) -> ClassifiedInputStream {
         ClassifiedInputStream {
             objects: VecDeque::new().into(),
             stdin: Some(stdout),
@@ -73,36 +74,86 @@ impl ClassifiedInputStream {
     }
 }
 
-crate struct ClassifiedPipeline {
-    crate commands: Vec<ClassifiedCommand>,
+#[derive(Debug, Clone)]
+pub(crate) struct ClassifiedPipeline {
+    pub(crate) commands: Spanned<Vec<ClassifiedCommand>>,
 }
 
-crate enum ClassifiedCommand {
+impl FormatDebug for ClassifiedPipeline {
+    fn fmt_debug(&self, f: &mut DebugFormatter, source: &str) -> fmt::Result {
+        f.say_str(
+            "classified pipeline",
+            self.commands.iter().map(|c| c.debug(source)).join(" | "),
+        )
+    }
+}
+
+impl HasSpan for ClassifiedPipeline {
+    fn span(&self) -> Span {
+        self.commands.span
+    }
+}
+
+#[derive(Debug, Clone, Eq, PartialEq)]
+pub(crate) enum ClassifiedCommand {
     #[allow(unused)]
     Expr(TokenNode),
     Internal(InternalCommand),
+    #[allow(unused)]
+    Dynamic(Spanned<hir::Call>),
     External(ExternalCommand),
 }
 
-impl ClassifiedCommand {
-    #[allow(unused)]
-    pub fn span(&self) -> Span {
+impl FormatDebug for ClassifiedCommand {
+    fn fmt_debug(&self, f: &mut DebugFormatter, source: &str) -> fmt::Result {
         match self {
-            ClassifiedCommand::Expr(token) => token.span(),
-            ClassifiedCommand::Internal(internal) => internal.name_span.into(),
-            ClassifiedCommand::External(external) => external.name_span.into(),
+            ClassifiedCommand::Expr(expr) => expr.fmt_debug(f, source),
+            ClassifiedCommand::Internal(internal) => internal.fmt_debug(f, source),
+            ClassifiedCommand::Dynamic(dynamic) => dynamic.fmt_debug(f, source),
+            ClassifiedCommand::External(external) => external.fmt_debug(f, source),
         }
     }
 }
 
-crate struct InternalCommand {
-    crate command: Arc<Command>,
-    crate name_span: Span,
-    crate args: hir::Call,
+impl HasSpan for ClassifiedCommand {
+    fn span(&self) -> Span {
+        match self {
+            ClassifiedCommand::Expr(node) => node.span(),
+            ClassifiedCommand::Internal(command) => command.span(),
+            ClassifiedCommand::Dynamic(call) => call.span,
+            ClassifiedCommand::External(command) => command.span(),
+        }
+    }
+}
+
+#[derive(new, Debug, Clone, Eq, PartialEq)]
+pub(crate) struct InternalCommand {
+    pub(crate) name: String,
+    pub(crate) name_tag: Tag,
+    pub(crate) args: Spanned<hir::Call>,
+}
+
+impl HasSpan for InternalCommand {
+    fn span(&self) -> Span {
+        let start = self.name_tag.span;
+
+        start.until(self.args.span)
+    }
+}
+
+impl FormatDebug for InternalCommand {
+    fn fmt_debug(&self, f: &mut DebugFormatter, source: &str) -> fmt::Result {
+        f.say("internal", self.args.debug(source))
+    }
+}
+
+#[derive(new, Debug, Eq, PartialEq)]
+pub(crate) struct DynamicCommand {
+    pub(crate) args: hir::Call,
 }
 
 impl InternalCommand {
-    crate async fn run(
+    pub(crate) fn run(
         self,
         context: &mut Context,
         input: ClassifiedInputStream,
@@ -110,87 +161,66 @@ impl InternalCommand {
     ) -> Result<InputStream, ShellError> {
         if log_enabled!(log::Level::Trace) {
             trace!(target: "nu::run::internal", "->");
-            trace!(target: "nu::run::internal", "{}", self.command.name());
+            trace!(target: "nu::run::internal", "{}", self.name);
             trace!(target: "nu::run::internal", "{}", self.args.debug(&source));
         }
 
         let objects: InputStream =
             trace_stream!(target: "nu::trace_stream::internal", "input" = input.objects);
 
-        let result = context.run_command(
-            self.command,
-            self.name_span.clone(),
-            context.source_map.clone(),
-            self.args,
-            source,
+        let command = context.expect_command(&self.name);
+
+        let result = {
+            context.run_command(
+                command,
+                self.name_tag.clone(),
+                self.args.item,
+                &source,
                 objects,
-        );
+            )
+        };
 
+        let result = trace_out_stream!(target: "nu::trace_stream::internal", source: &source, "output" = result);
         let mut result = result.values;
+        let mut context = context.clone();
 
-        let mut stream = VecDeque::new();
+        let stream = async_stream! {
             while let Some(item) = result.next().await {
-            match item? {
-                ReturnSuccess::Action(action) => match action {
+                match item {
+                    Ok(ReturnSuccess::Action(action)) => match action {
                         CommandAction::ChangePath(path) => {
                             context.shell_manager.set_path(path);
                         }
-                    CommandAction::AddSpanSource(uuid, span_source) => {
-                        context.add_span_source(uuid, span_source);
+                        CommandAction::Exit => std::process::exit(0), // TODO: save history.txt
+                        CommandAction::EnterHelpShell(value) => {
+                            match value {
+                                Tagged {
+                                    item: Value::Primitive(Primitive::String(cmd)),
+                                    tag,
+                                } => {
+                                    context.shell_manager.insert_at_current(Box::new(
+                                        HelpShell::for_command(
+                                            Value::string(cmd).tagged(tag),
+                                            &context.registry(),
+                                        ).unwrap(),
+                                    ));
+                                }
+                                _ => {
+                                    context.shell_manager.insert_at_current(Box::new(
+                                        HelpShell::index(&context.registry()).unwrap(),
+                                    ));
+                                }
+                            }
                         }
-                    CommandAction::Exit => std::process::exit(0),
                         CommandAction::EnterValueShell(value) => {
                             context
                                 .shell_manager
                                 .insert_at_current(Box::new(ValueShell::new(value)));
                         }
                         CommandAction::EnterShell(location) => {
-                        let path = std::path::Path::new(&location);
-
-                        if path.is_dir() {
-                            // If it's a directory, add a new filesystem shell
                             context.shell_manager.insert_at_current(Box::new(
-                                FilesystemShell::with_location(
-                                    location,
-                                    context.registry().clone(),
-                                )?,
+                                FilesystemShell::with_location(location, context.registry().clone()).unwrap(),
                             ));
-                        } else {
-                            // If it's a file, attempt to open the file as a value and enter it
-                            let cwd = context.shell_manager.path();
-
-                            let full_path = std::path::PathBuf::from(cwd);
-
-                            let (file_extension, contents, contents_tag, span_source) =
-                                crate::commands::open::fetch(
-                                    &full_path,
-                                    &location,
-                                    Span::unknown(),
-                                )?;
-
-                            if let Some(uuid) = contents_tag.origin {
-                                // If we have loaded something, track its source
-                                context.add_span_source(uuid, span_source);
-                            }
-
-                            match contents {
-                                Value::Primitive(Primitive::String(string)) => {
-                                    let value = crate::commands::open::parse_as_value(
-                                        file_extension,
-                                        string,
-                                        contents_tag,
-                                        Span::unknown(),
-                                    )?;
-
-                                    context
-                                        .shell_manager
-                                        .insert_at_current(Box::new(ValueShell::new(value)));
-                                }
-                                value => context.shell_manager.insert_at_current(Box::new(
-                                    ValueShell::new(value.tagged(contents_tag)),
-                                )),
-                            }
-                        }
                         }
                         CommandAction::PreviousShell => {
                             context.shell_manager.prev();
@@ -201,36 +231,63 @@ impl InternalCommand {
                         CommandAction::LeaveShell => {
                             context.shell_manager.remove_at_current();
                             if context.shell_manager.is_empty() {
-                            std::process::exit(0);
+                                std::process::exit(0); // TODO: save history.txt
                             }
                         }
                     },
 
-                ReturnSuccess::Value(v) => {
-                    stream.push_back(v);
+                    Ok(ReturnSuccess::Value(v)) => {
+                        yield Ok(v);
                     }
+
+                    Err(x) => {
+                        yield Ok(Value::Error(x).tagged_unknown());
+                        break;
+                    }
+                }
+            }
+        };
+
+        Ok(stream.to_input_stream())
     }
 }
 
-        Ok(stream.into())
+#[derive(Debug, Clone, Eq, PartialEq)]
+pub(crate) struct ExternalCommand {
+    pub(crate) name: String,
+
+    pub(crate) name_tag: Tag,
+    pub(crate) args: Spanned<Vec<Tagged<String>>>,
+}
+
+impl FormatDebug for ExternalCommand {
+    fn fmt_debug(&self, f: &mut DebugFormatter, source: &str) -> fmt::Result {
+        write!(f, "{}", self.name)?;
+
+        if self.args.item.len() > 0 {
+            write!(f, " ")?;
+            write!(f, "{}", self.args.iter().map(|i| i.debug(source)).join(" "))?;
+        }
+
+        Ok(())
     }
 }
 
-crate struct ExternalCommand {
-    crate name: String,
-    #[allow(unused)]
-    crate name_span: Span,
-    crate args: Vec<Tagged<String>>,
+impl HasSpan for ExternalCommand {
+    fn span(&self) -> Span {
+        self.name_tag.span.until(self.args.span)
+    }
 }
 
-crate enum StreamNext {
+#[derive(Debug)]
+pub(crate) enum StreamNext {
     Last,
     External,
     Internal,
 }
 
 impl ExternalCommand {
-    crate async fn run(
+    pub(crate) async fn run(
         self,
         context: &mut Context,
         input: ClassifiedInputStream,
@@ -238,60 +295,57 @@ impl ExternalCommand {
     ) -> Result<ClassifiedInputStream, ShellError> {
         let stdin = input.stdin;
         let inputs: Vec<Tagged<Value>> = input.objects.into_vec().await;
-        let name_span = self.name_span.clone();
 
         trace!(target: "nu::run::external", "-> {}", self.name);
         trace!(target: "nu::run::external", "inputs = {:?}", inputs);
 
         let mut arg_string = format!("{}", self.name);
-        for arg in &self.args {
+        for arg in &self.args.item {
             arg_string.push_str(&arg);
         }
 
+        trace!(target: "nu::run::external", "command = {:?}", self.name);
+
         let mut process;
-
-        #[cfg(windows)]
-        {
-            process = Exec::shell(&self.name);
-
         if arg_string.contains("$it") {
-                let mut first = true;
-
-                for i in &inputs {
-                    if i.as_string().is_err() {
-                        let mut span = None;
-                        for arg in &self.args {
-                            if arg.item.contains("$it") {
-                                span = Some(arg.span());
-                            }
-                        }
-                        if let Some(span) = span {
-                            return Err(ShellError::labeled_error(
+            let input_strings = inputs
+                .iter()
+                .map(|i| {
+                    i.as_string().map_err(|_| {
+                        let arg = self.args.iter().find(|arg| arg.item.contains("$it"));
+                        if let Some(arg) = arg {
+                            ShellError::labeled_error(
                                 "External $it needs string data",
-                                "given object instead of string data",
-                                span,
-                            ));
+                                "given row instead of string data",
+                                arg.tag(),
+                            )
                         } else {
-                            return Err(ShellError::string("Error: $it needs string data"));
-                        }
-                    }
-                    if !first {
-                        process = process.arg("&&");
-                        process = process.arg(&self.name);
-                    } else {
-                        first = false;
+                            ShellError::labeled_error(
+                                "$it needs string data",
+                                "given something else",
+                                self.name_tag.clone(),
+                            )
                         }
+                    })
+                })
+                .collect::<Result<Vec<String>, ShellError>>()?;
 
-                    for arg in &self.args {
+            let commands = input_strings.iter().map(|i| {
+                let args = self.args.iter().filter_map(|arg| {
                     if arg.chars().all(|c| c.is_whitespace()) {
-                            continue;
-                        }
-
-                        process = process.arg(&arg.replace("$it", &i.as_string()?));
-                    }
-                }
+                        None
                     } else {
-                for arg in &self.args {
+                        Some(arg.replace("$it", &i))
+                    }
+                });
+
+                format!("{} {}", self.name, itertools::join(args, " "))
+            });
+
+            process = Exec::shell(itertools::join(commands, " && "))
+        } else {
+            process = Exec::cmd(&self.name);
+            for arg in &self.args.item {
                 let arg_chars: Vec<_> = arg.chars().collect();
                 if arg_chars.len() > 1
                     && arg_chars[0] == '"'
@@ -305,54 +359,11 @@ impl ExternalCommand {
                 }
             }
         }
-        }
-        #[cfg(not(windows))]
-        {
-            let mut new_arg_string = self.name.to_string();
 
-            if arg_string.contains("$it") {
-                let mut first = true;
-                for i in &inputs {
-                    if i.as_string().is_err() {
-                        let mut span = name_span;
-                        for arg in &self.args {
-                            if arg.item.contains("$it") {
-                                span = arg.span();
-                            }
-                        }
-                        return Err(ShellError::labeled_error(
-                            "External $it needs string data",
-                            "given object instead of string data",
-                            span,
-                        ));
-                    }
-                    if !first {
-                        new_arg_string.push_str("&&");
-                        new_arg_string.push_str(&self.name);
-                    } else {
-                        first = false;
-                    }
-
-                    for arg in &self.args {
-                        if arg.chars().all(|c| c.is_whitespace()) {
-                            continue;
-                        }
-
-                        new_arg_string.push_str(" ");
-                        new_arg_string.push_str(&arg.replace("$it", &i.as_string().unwrap()));
-                    }
-                }
-            } else {
-                for arg in &self.args {
-                    new_arg_string.push_str(" ");
-                    new_arg_string.push_str(&arg);
-                }
-            }
-
-            process = Exec::shell(new_arg_string);
-        }
         process = process.cwd(context.shell_manager.path());
 
+        trace!(target: "nu::run::external", "cwd = {:?}", context.shell_manager.path());
+
         let mut process = match stream_next {
             StreamNext::Last => process,
             StreamNext::External | StreamNext::Internal => {
@@ -360,32 +371,60 @@ impl ExternalCommand {
             }
         };
 
+        trace!(target: "nu::run::external", "set up stdout pipe");
+
         if let Some(stdin) = stdin {
             process = process.stdin(stdin);
         }
 
-        let mut popen = process.popen().unwrap();
+        trace!(target: "nu::run::external", "set up stdin pipe");
+        trace!(target: "nu::run::external", "built process {:?}", process);
 
+        let popen = process.popen();
+
+        trace!(target: "nu::run::external", "next = {:?}", stream_next);
+
+        let name_tag = self.name_tag.clone();
+        if let Ok(mut popen) = popen {
             match stream_next {
                 StreamNext::Last => {
-                popen.wait()?;
+                    let _ = popen.detach();
+                    loop {
+                        match popen.poll() {
+                            None => {
+                                let _ = std::thread::sleep(std::time::Duration::new(0, 100000000));
+                            }
+                            _ => {
+                                let _ = popen.terminate();
+                                break;
+                            }
+                        }
+                    }
                     Ok(ClassifiedInputStream::new())
                 }
                 StreamNext::External => {
+                    let _ = popen.detach();
                     let stdout = popen.stdout.take().unwrap();
                     Ok(ClassifiedInputStream::from_stdout(stdout))
                 }
                 StreamNext::Internal => {
+                    let _ = popen.detach();
                     let stdout = popen.stdout.take().unwrap();
                     let file = futures::io::AllowStdIo::new(stdout);
                     let stream = Framed::new(file, LinesCodec {});
-                let stream = stream.map(move |line| {
-                    Tagged::from_simple_spanned_item(Value::string(line.unwrap()), name_span)
-                });
+                    let stream =
+                        stream.map(move |line| Value::string(line.unwrap()).tagged(&name_tag));
                     Ok(ClassifiedInputStream::from_input_stream(
                         stream.boxed() as BoxStream<'static, Tagged<Value>>
                     ))
                 }
             }
+        } else {
+            return Err(ShellError::labeled_error(
+                "Command not found",
+                "command not found",
+                name_tag,
+            ));
+        }
     }
 }

src/commands/clip.rs

@@ -5,7 +5,6 @@ pub mod clipboard {
     use crate::errors::ShellError;
     use crate::prelude::*;
     use futures::stream::StreamExt;
-    use futures_async_stream::async_stream_block;
 
     use clipboard::{ClipboardContext, ClipboardProvider};
 
@@ -18,6 +17,15 @@ pub mod clipboard {
         fn name(&self) -> &str {
             "clip"
         }
+
+        fn signature(&self) -> Signature {
+            Signature::build("clip")
+        }
+
+        fn usage(&self) -> &str {
+            "Copy the contents of the pipeline to the copy/paste buffer"
+        }
+
         fn run(
             &self,
             args: CommandArgs,
@@ -25,20 +33,19 @@ pub mod clipboard {
         ) -> Result<OutputStream, ShellError> {
             args.process(registry, clip)?.run()
         }
-
-        fn signature(&self) -> Signature {
-            Signature::build("clip")
-        }
     }
 
     pub fn clip(
         ClipArgs {}: ClipArgs,
         RunnableContext { input, name, .. }: RunnableContext,
     ) -> Result<OutputStream, ShellError> {
-        let stream = async_stream_block! {
+        let stream = async_stream! {
             let values: Vec<Tagged<Value>> = input.values.collect().await;
 
-            inner_clip(values, name).await;
+            let mut clip_stream = inner_clip(values, name).await;
+            while let Some(value) = clip_stream.next().await {
+                yield value;
+            }
         };
 
         let stream: BoxStream<'static, ReturnValue> = stream.boxed();
@@ -46,7 +53,7 @@ pub mod clipboard {
         Ok(OutputStream::from(stream))
     }
 
-    async fn inner_clip(input: Vec<Tagged<Value>>, name: Span) -> OutputStream {
+    async fn inner_clip(input: Vec<Tagged<Value>>, name: Tag) -> OutputStream {
         let mut clip_context: ClipboardContext = ClipboardProvider::new().unwrap();
         let mut new_copy_data = String::new();
 

src/commands/command.rs

@@ -1,7 +1,6 @@
-use crate::context::{SourceMap, SpanSource};
+use crate::data::Value;
 use crate::errors::ShellError;
 use crate::evaluate::Scope;
-use crate::object::Value;
 use crate::parser::hir;
 use crate::parser::{registry, ConfigDeserializer};
 use crate::prelude::*;
@@ -11,18 +10,17 @@ use serde::{Deserialize, Serialize};
 use std::fmt;
 use std::ops::Deref;
 use std::path::PathBuf;
-use uuid::Uuid;
+use std::sync::atomic::AtomicBool;
 
 #[derive(Deserialize, Serialize, Debug, Clone)]
 pub struct UnevaluatedCallInfo {
     pub args: hir::Call,
     pub source: Text,
-    pub source_map: SourceMap,
-    pub name_span: Span,
+    pub name_tag: Tag,
 }
 
-impl ToDebug for UnevaluatedCallInfo {
-    fn fmt_debug(&self, f: &mut fmt::Formatter, source: &str) -> fmt::Result {
+impl FormatDebug for UnevaluatedCallInfo {
+    fn fmt_debug(&self, f: &mut DebugFormatter, source: &str) -> fmt::Result {
         self.args.fmt_debug(f, source)
     }
 }
@@ -37,51 +35,22 @@ impl UnevaluatedCallInfo {
 
         Ok(CallInfo {
             args,
-            source_map: self.source_map,
-            name_span: self.name_span,
+            name_tag: self.name_tag,
         })
     }
-
-    pub fn has_it_or_block(&self) -> bool {
-        use hir::RawExpression;
-        use hir::Variable;
-
-        if let Some(positional) = &self.args.positional() {
-            for pos in positional {
-                match pos {
-                    Tagged {
-                        item: RawExpression::Variable(Variable::It(_)),
-                        ..
-                    } => {
-                        return true;
-                    }
-                    Tagged {
-                        item: RawExpression::Block(_),
-                        ..
-                    } => {
-                        return true;
-                    }
-                    _ => {}
-                }
-            }
-        }
-
-        false
-    }
 }
 
 #[derive(Deserialize, Serialize, Debug, Clone)]
 pub struct CallInfo {
     pub args: registry::EvaluatedArgs,
-    pub source_map: SourceMap,
-    pub name_span: Span,
+    pub name_tag: Tag,
 }
 
 impl CallInfo {
     pub fn process<'de, T: Deserialize<'de>>(
         &self,
         shell_manager: &ShellManager,
-        callback: fn(T, &RunnablePerItemContext) -> Result<VecDeque<ReturnValue>, ShellError>,
+        callback: fn(T, &RunnablePerItemContext) -> Result<OutputStream, ShellError>,
     ) -> Result<RunnablePerItemArgs<T>, ShellError> {
         let mut deserializer = ConfigDeserializer::from_call_info(self.clone());
 
@@ -89,7 +58,7 @@ impl CallInfo {
             args: T::deserialize(&mut deserializer)?,
             context: RunnablePerItemContext {
                 shell_manager: shell_manager.clone(),
-                name: self.name_span,
+                name: self.name_tag.clone(),
             },
             callback,
         })
@@ -97,18 +66,20 @@ impl CallInfo {
 }
 
 #[derive(Getters)]
-#[get = "crate"]
+#[get = "pub(crate)"]
 pub struct CommandArgs {
     pub host: Arc<Mutex<dyn Host>>,
+    pub ctrl_c: Arc<AtomicBool>,
     pub shell_manager: ShellManager,
     pub call_info: UnevaluatedCallInfo,
     pub input: InputStream,
 }
 
 #[derive(Getters, Clone)]
-#[get = "crate"]
+#[get = "pub(crate)"]
 pub struct RawCommandArgs {
     pub host: Arc<Mutex<dyn Host>>,
+    pub ctrl_c: Arc<AtomicBool>,
     pub shell_manager: ShellManager,
     pub call_info: UnevaluatedCallInfo,
 }
@@ -117,6 +88,7 @@ impl RawCommandArgs {
     pub fn with_input(self, input: Vec<Tagged<Value>>) -> CommandArgs {
         CommandArgs {
             host: self.host,
+            ctrl_c: self.ctrl_c,
             shell_manager: self.shell_manager,
             call_info: self.call_info,
             input: input.into(),
@@ -124,8 +96,14 @@ impl RawCommandArgs {
     }
 }
 
-impl ToDebug for CommandArgs {
-    fn fmt_debug(&self, f: &mut fmt::Formatter, source: &str) -> fmt::Result {
+impl std::fmt::Debug for CommandArgs {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.call_info.fmt(f)
+    }
+}
+
+impl FormatDebug for CommandArgs {
+    fn fmt_debug(&self, f: &mut DebugFormatter, source: &str) -> fmt::Result {
         self.call_info.fmt_debug(f, source)
     }
 }
@@ -136,44 +114,43 @@ impl CommandArgs {
         registry: &registry::CommandRegistry,
     ) -> Result<EvaluatedWholeStreamCommandArgs, ShellError> {
         let host = self.host.clone();
+        let ctrl_c = self.ctrl_c.clone();
         let shell_manager = self.shell_manager.clone();
         let input = self.input;
         let call_info = self.call_info.evaluate(registry, &Scope::empty())?;
 
         Ok(EvaluatedWholeStreamCommandArgs::new(
             host,
+            ctrl_c,
             shell_manager,
             call_info,
             input,
         ))
     }
 
-    // pub fn name_span(&self) -> Span {
-    //     self.call_info.name_span
-    // }
-
     pub fn process<'de, T: Deserialize<'de>>(
         self,
         registry: &CommandRegistry,
         callback: fn(T, RunnableContext) -> Result<OutputStream, ShellError>,
     ) -> Result<RunnableArgs<T>, ShellError> {
         let shell_manager = self.shell_manager.clone();
-        let source_map = self.call_info.source_map.clone();
         let host = self.host.clone();
+        let ctrl_c = self.ctrl_c.clone();
         let args = self.evaluate_once(registry)?;
+        let call_info = args.call_info.clone();
         let (input, args) = args.split();
-        let name_span = args.call_info.name_span;
-        let mut deserializer = ConfigDeserializer::from_call_info(args.call_info);
+        let name_tag = args.call_info.name_tag;
+        let mut deserializer = ConfigDeserializer::from_call_info(call_info);
 
         Ok(RunnableArgs {
             args: T::deserialize(&mut deserializer)?,
             context: RunnableContext {
-                input: input,
+                input,
                 commands: registry.clone(),
                 shell_manager,
-                name: name_span,
-                source_map,
+                name: name_tag,
                 host,
+                ctrl_c,
             },
             callback,
         })
@@ -186,27 +163,30 @@ impl CommandArgs {
     ) -> Result<RunnableRawArgs<T>, ShellError> {
         let raw_args = RawCommandArgs {
             host: self.host.clone(),
+            ctrl_c: self.ctrl_c.clone(),
             shell_manager: self.shell_manager.clone(),
             call_info: self.call_info.clone(),
         };
 
         let shell_manager = self.shell_manager.clone();
-        let source_map = self.call_info.source_map.clone();
         let host = self.host.clone();
+        let ctrl_c = self.ctrl_c.clone();
         let args = self.evaluate_once(registry)?;
+        let call_info = args.call_info.clone();
+
         let (input, args) = args.split();
-        let name_span = args.call_info.name_span;
-        let mut deserializer = ConfigDeserializer::from_call_info(args.call_info);
+        let name_tag = args.call_info.name_tag;
+        let mut deserializer = ConfigDeserializer::from_call_info(call_info.clone());
 
         Ok(RunnableRawArgs {
             args: T::deserialize(&mut deserializer)?,
             context: RunnableContext {
-                input: input,
+                input,
                 commands: registry.clone(),
                 shell_manager,
-                name: name_span,
-                source_map,
+                name: name_tag,
                 host,
+                ctrl_c,
             },
             raw_args,
             callback,
@@ -216,7 +196,7 @@ impl CommandArgs {
 
 pub struct RunnablePerItemContext {
     pub shell_manager: ShellManager,
-    pub name: Span,
+    pub name: Tag,
 }
 
 impl RunnablePerItemContext {
@@ -229,32 +209,25 @@ pub struct RunnableContext {
     pub input: InputStream,
     pub shell_manager: ShellManager,
     pub host: Arc<Mutex<dyn Host>>,
+    pub ctrl_c: Arc<AtomicBool>,
     pub commands: CommandRegistry,
-    pub source_map: SourceMap,
-    pub name: Span,
+    pub name: Tag,
 }
 
 impl RunnableContext {
-    #[allow(unused)]
-    pub fn cwd(&self) -> PathBuf {
-        PathBuf::from(self.shell_manager.path())
-    }
-
-    pub fn expect_command(&self, name: &str) -> Arc<Command> {
-        self.commands
-            .get_command(name)
-            .expect(&format!("Expected command {}", name))
+    pub fn get_command(&self, name: &str) -> Option<Arc<Command>> {
+        self.commands.get_command(name)
     }
 }
 
 pub struct RunnablePerItemArgs<T> {
     args: T,
     context: RunnablePerItemContext,
-    callback: fn(T, &RunnablePerItemContext) -> Result<VecDeque<ReturnValue>, ShellError>,
+    callback: fn(T, &RunnablePerItemContext) -> Result<OutputStream, ShellError>,
 }
 
 impl<T> RunnablePerItemArgs<T> {
-    pub fn run(self) -> Result<VecDeque<ReturnValue>, ShellError> {
+    pub fn run(self) -> Result<OutputStream, ShellError> {
         (self.callback)(self.args, &self.context)
     }
 }
@@ -302,6 +275,7 @@ impl Deref for EvaluatedWholeStreamCommandArgs {
 impl EvaluatedWholeStreamCommandArgs {
     pub fn new(
         host: Arc<Mutex<dyn Host>>,
+        ctrl_c: Arc<AtomicBool>,
         shell_manager: ShellManager,
         call_info: CallInfo,
         input: impl Into<InputStream>,
@@ -309,6 +283,7 @@ impl EvaluatedWholeStreamCommandArgs {
         EvaluatedWholeStreamCommandArgs {
             args: EvaluatedCommandArgs {
                 host,
+                ctrl_c,
                 shell_manager,
                 call_info,
             },
@@ -316,8 +291,8 @@ impl EvaluatedWholeStreamCommandArgs {
         }
     }
 
-    pub fn name_span(&self) -> Span {
-        self.args.call_info.name_span
+    pub fn name_tag(&self) -> Tag {
+        self.args.call_info.name_tag.clone()
     }
 
     pub fn parts(self) -> (InputStream, registry::EvaluatedArgs) {
@@ -337,8 +312,6 @@ impl EvaluatedWholeStreamCommandArgs {
 #[get = "pub"]
 pub struct EvaluatedFilterCommandArgs {
     args: EvaluatedCommandArgs,
-    #[allow(unused)]
-    input: Tagged<Value>,
 }
 
 impl Deref for EvaluatedFilterCommandArgs {
@@ -351,25 +324,26 @@ impl Deref for EvaluatedFilterCommandArgs {
 impl EvaluatedFilterCommandArgs {
     pub fn new(
         host: Arc<Mutex<dyn Host>>,
+        ctrl_c: Arc<AtomicBool>,
         shell_manager: ShellManager,
         call_info: CallInfo,
-        input: Tagged<Value>,
     ) -> EvaluatedFilterCommandArgs {
         EvaluatedFilterCommandArgs {
             args: EvaluatedCommandArgs {
                 host,
+                ctrl_c,
                 shell_manager,
                 call_info,
             },
-            input,
         }
     }
 }
 
 #[derive(Getters, new)]
-#[get = "crate"]
+#[get = "pub(crate)"]
 pub struct EvaluatedCommandArgs {
     pub host: Arc<Mutex<dyn Host>>,
+    pub ctrl_c: Arc<AtomicBool>,
     pub shell_manager: ShellManager,
     pub call_info: CallInfo,
 }
@@ -404,25 +378,43 @@ impl EvaluatedCommandArgs {
         }
     }
 
-    #[allow(unused)]
     pub fn has(&self, name: &str) -> bool {
         self.call_info.args.has(name)
     }
 }
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum CommandAction {
     ChangePath(String),
-    AddSpanSource(Uuid, SpanSource),
     Exit,
     EnterShell(String),
     EnterValueShell(Tagged<Value>),
+    EnterHelpShell(Tagged<Value>),
     PreviousShell,
     NextShell,
     LeaveShell,
 }
 
-#[derive(Debug, Serialize, Deserialize)]
+impl FormatDebug for CommandAction {
+    fn fmt_debug(&self, f: &mut DebugFormatter, _source: &str) -> fmt::Result {
+        match self {
+            CommandAction::ChangePath(s) => write!(f, "action:change-path={}", s),
+            CommandAction::Exit => write!(f, "action:exit"),
+            CommandAction::EnterShell(s) => write!(f, "action:enter-shell={}", s),
+            CommandAction::EnterValueShell(t) => {
+                write!(f, "action:enter-value-shell={:?}", t.debug())
+            }
+            CommandAction::EnterHelpShell(t) => {
+                write!(f, "action:enter-help-shell={:?}", t.debug())
+            }
+            CommandAction::PreviousShell => write!(f, "action:previous-shell"),
+            CommandAction::NextShell => write!(f, "action:next-shell"),
+            CommandAction::LeaveShell => write!(f, "action:leave-shell"),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum ReturnSuccess {
     Value(Tagged<Value>),
     Action(CommandAction),
@@ -430,6 +422,16 @@ pub enum ReturnSuccess {
 
 pub type ReturnValue = Result<ReturnSuccess, ShellError>;
 
+impl FormatDebug for ReturnValue {
+    fn fmt_debug(&self, f: &mut DebugFormatter, source: &str) -> fmt::Result {
+        match self {
+            Err(err) => write!(f, "{}", err.debug(source)),
+            Ok(ReturnSuccess::Value(v)) => write!(f, "{:?}", v.debug()),
+            Ok(ReturnSuccess::Action(a)) => write!(f, "{}", a.debug(source)),
+        }
+    }
+}
+
 impl From<Tagged<Value>> for ReturnValue {
     fn from(input: Tagged<Value>) -> ReturnValue {
         Ok(ReturnSuccess::Value(input))
@@ -448,53 +450,61 @@ impl ReturnSuccess {
     pub fn action(input: CommandAction) -> ReturnValue {
         Ok(ReturnSuccess::Action(input))
     }
-
-    pub fn spanned_value(input: Value, span: Span) -> ReturnValue {
-        Ok(ReturnSuccess::Value(Tagged::from_simple_spanned_item(
-            input, span,
-        )))
-    }
 }
 
 pub trait WholeStreamCommand: Send + Sync {
     fn name(&self) -> &str;
 
+    fn signature(&self) -> Signature {
+        Signature {
+            name: self.name().to_string(),
+            usage: self.usage().to_string(),
+            positional: vec![],
+            rest_positional: None,
+            named: indexmap::IndexMap::new(),
+            is_filter: true,
+        }
+    }
+
+    fn usage(&self) -> &str;
+
     fn run(
         &self,
         args: CommandArgs,
         registry: &registry::CommandRegistry,
     ) -> Result<OutputStream, ShellError>;
 
-    fn signature(&self) -> Signature {
-        Signature {
-            name: self.name().to_string(),
-            positional: vec![],
-            rest_positional: true,
-            named: indexmap::IndexMap::new(),
-            is_filter: true,
-        }
+    fn is_binary(&self) -> bool {
+        false
     }
 }
 
 pub trait PerItemCommand: Send + Sync {
     fn name(&self) -> &str;
 
+    fn signature(&self) -> Signature {
+        Signature {
+            name: self.name().to_string(),
+            usage: self.usage().to_string(),
+            positional: vec![],
+            rest_positional: None,
+            named: indexmap::IndexMap::new(),
+            is_filter: true,
+        }
+    }
+
+    fn usage(&self) -> &str;
+
     fn run(
         &self,
         call_info: &CallInfo,
         registry: &CommandRegistry,
-        shell_manager: &ShellManager,
+        raw_args: &RawCommandArgs,
         input: Tagged<Value>,
-    ) -> Result<VecDeque<ReturnValue>, ShellError>;
+    ) -> Result<OutputStream, ShellError>;
 
-    fn signature(&self) -> Signature {
-        Signature {
-            name: self.name().to_string(),
-            positional: vec![],
-            rest_positional: true,
-            named: indexmap::IndexMap::new(),
-            is_filter: true,
-        }
+    fn is_binary(&self) -> bool {
+        false
     }
 }
 
@@ -503,6 +513,15 @@ pub enum Command {
     PerItem(Arc<dyn PerItemCommand>),
 }
 
+impl std::fmt::Debug for Command {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Command::WholeStream(command) => write!(f, "WholeStream({})", command.name()),
+            Command::PerItem(command) => write!(f, "PerItem({})", command.name()),
+        }
+    }
+}
+
 impl Command {
     pub fn name(&self) -> &str {
         match self {
@@ -518,6 +537,13 @@ impl Command {
         }
     }
 
+    pub fn usage(&self) -> &str {
+        match self {
+            Command::WholeStream(command) => command.usage(),
+            Command::PerItem(command) => command.usage(),
+        }
+    }
+
     pub fn run(&self, args: CommandArgs, registry: &registry::CommandRegistry) -> OutputStream {
         match self {
             Command::WholeStream(command) => match command.run(args, registry) {
@@ -536,11 +562,11 @@ impl Command {
     ) -> OutputStream {
         let raw_args = RawCommandArgs {
             host: args.host,
+            ctrl_c: args.ctrl_c,
             shell_manager: args.shell_manager,
             call_info: args.call_info,
         };
 
-        if raw_args.call_info.has_it_or_block() {
         let out = args
             .input
             .values
@@ -550,36 +576,24 @@ impl Command {
                     .call_info
                     .evaluate(&registry, &Scope::it_value(x.clone()))
                     .unwrap();
-                    match command.run(&call_info, &registry, &raw_args.shell_manager, x) {
+                match command.run(&call_info, &registry, &raw_args, x) {
                     Ok(o) => o,
-                        Err(e) => VecDeque::from(vec![ReturnValue::Err(e)]),
+                    Err(e) => VecDeque::from(vec![ReturnValue::Err(e)]).to_output_stream(),
                 }
             })
             .flatten();
 
         out.to_output_stream()
-        } else {
-            let nothing = Value::nothing().tagged(Tag::unknown());
-            let call_info = raw_args
-                .clone()
-                .call_info
-                .evaluate(&registry, &Scope::it_value(nothing.clone()))
-                .unwrap();
-            // We don't have an $it or block, so just execute what we have
+    }
 
-            command
-                .run(&call_info, &registry, &raw_args.shell_manager, nothing)?
-                .into()
-            // let out = match command.run(&call_info, &registry, &raw_args.shell_manager, nothing) {
-            //     Ok(o) => o,
-            //     Err(e) => VecDeque::from(vec![ReturnValue::Err(e)]),
-            // };
-            // Ok(out.to_output_stream())
+    pub fn is_binary(&self) -> bool {
+        match self {
+            Command::WholeStream(command) => command.is_binary(),
+            Command::PerItem(command) => command.is_binary(),
         }
     }
 }
 
-#[allow(unused)]
 pub struct FnFilterCommand {
     name: String,
     func: fn(EvaluatedFilterCommandArgs) -> Result<OutputStream, ShellError>,
@@ -590,6 +604,10 @@ impl WholeStreamCommand for FnFilterCommand {
         &self.name
     }
 
+    fn usage(&self) -> &str {
+        "usage"
+    }
+
     fn run(
         &self,
         args: CommandArgs,
@@ -597,6 +615,7 @@ impl WholeStreamCommand for FnFilterCommand {
     ) -> Result<OutputStream, ShellError> {
         let CommandArgs {
             host,
+            ctrl_c,
             shell_manager,
             call_info,
             input,
@@ -609,16 +628,17 @@ impl WholeStreamCommand for FnFilterCommand {
 
         let result = input.values.map(move |it| {
             let registry = registry.clone();
-            let call_info = match call_info
-                .clone()
-                .evaluate(&registry, &Scope::it_value(it.clone()))
-            {
+            let call_info = match call_info.clone().evaluate(&registry, &Scope::it_value(it)) {
                 Err(err) => return OutputStream::from(vec![Err(err)]).values,
                 Ok(args) => args,
             };
 
-            let args =
-                EvaluatedFilterCommandArgs::new(host.clone(), shell_manager.clone(), call_info, it);
+            let args = EvaluatedFilterCommandArgs::new(
+                host.clone(),
+                ctrl_c.clone(),
+                shell_manager.clone(),
+                call_info,
+            );
 
             match func(args) {
                 Err(err) => return OutputStream::from(vec![Err(err)]).values,
@@ -640,14 +660,3 @@ pub fn whole_stream_command(command: impl WholeStreamCommand + 'static) -> Arc<C
 pub fn per_item_command(command: impl PerItemCommand + 'static) -> Arc<Command> {
     Arc::new(Command::PerItem(Arc::new(command)))
 }
-
-#[allow(unused)]
-pub fn filter(
-    name: &str,
-    func: fn(EvaluatedFilterCommandArgs) -> Result<OutputStream, ShellError>,
-) -> Arc<Command> {
-    Arc::new(Command::WholeStream(Arc::new(FnFilterCommand {
-        name: name.to_string(),
-        func,
-    })))
-}

src/commands/config.rs

@@ -1,17 +1,18 @@
-use crate::prelude::*;
-
 use crate::commands::WholeStreamCommand;
+use crate::data::{config, Value};
 use crate::errors::ShellError;
-use crate::object::{config, Value};
-use crate::parser::hir::SyntaxType;
+use crate::parser::hir::SyntaxShape;
 use crate::parser::registry::{self};
-use std::iter::FromIterator;
+use crate::prelude::*;
+use std::path::PathBuf;
 
 pub struct Config;
 
 #[derive(Deserialize)]
 pub struct ConfigArgs {
+    load: Option<Tagged<PathBuf>>,
     set: Option<(Tagged<String>, Tagged<Value>)>,
+    set_into: Option<Tagged<String>>,
     get: Option<Tagged<String>>,
     clear: Tagged<bool>,
     remove: Option<Tagged<String>>,
@@ -25,11 +26,29 @@ impl WholeStreamCommand for Config {
 
     fn signature(&self) -> Signature {
         Signature::build("config")
-            .named("set", SyntaxType::Any)
-            .named("get", SyntaxType::Any)
-            .named("remove", SyntaxType::Any)
-            .switch("clear")
-            .switch("path")
+            .named(
+                "load",
+                SyntaxShape::Path,
+                "load the config from the path give",
+            )
+            .named(
+                "set",
+                SyntaxShape::Any,
+                "set a value in the config, eg) --set [key value]",
+            )
+            .named(
+                "set_into",
+                SyntaxShape::Member,
+                "sets a variable from values in the pipeline",
+            )
+            .named("get", SyntaxShape::Any, "get a value from the config")
+            .named("remove", SyntaxShape::Any, "remove a value from the config")
+            .switch("clear", "clear the config")
+            .switch("path", "return the path to the config file")
+    }
+
+    fn usage(&self) -> &str {
+        "Configuration management."
     }
 
     fn run(
@@ -43,84 +62,112 @@ impl WholeStreamCommand for Config {
 
 pub fn config(
     ConfigArgs {
+        load,
         set,
+        set_into,
         get,
         clear,
         remove,
         path,
     }: ConfigArgs,
-    RunnableContext { name, .. }: RunnableContext,
+    RunnableContext { name, input, .. }: RunnableContext,
 ) -> Result<OutputStream, ShellError> {
-    let mut result = crate::object::config::config(name)?;
+    let name_span = name.clone();
+
+    let stream = async_stream! {
+        let configuration = if let Some(supplied) = load {
+            Some(supplied.item().clone())
+        } else {
+            None
+        };
+
+        let mut result = crate::data::config::read(name_span, &configuration)?;
 
         if let Some(v) = get {
             let key = v.to_string();
             let value = result
                 .get(&key)
-            .ok_or_else(|| ShellError::string(&format!("Missing key {} in config", key)))?;
+                .ok_or_else(|| ShellError::labeled_error("Missing key in config", "key", v.tag()))?;
 
-        return Ok(
-            stream![value.clone()].into(), // futures::stream::once(futures::future::ready(ReturnSuccess::Value(value.clone()))).into(),
-        );
+            match value {
+                Tagged {
+                    item: Value::Table(list),
+                    ..
+                } => {
+                    for l in list {
+                        yield ReturnSuccess::value(l.clone());
                     }
-
-    if let Some((key, value)) = set {
+                }
+                x => yield ReturnSuccess::value(x.clone()),
+            }
+        }
+        else if let Some((key, value)) = set {
             result.insert(key.to_string(), value.clone());
 
-        config::write_config(&result)?;
+            config::write(&result, &configuration)?;
 
-        return Ok(stream![Tagged::from_simple_spanned_item(
-            Value::Object(result.into()),
-            value.span()
-        )]
-        .from_input_stream());
+            yield ReturnSuccess::value(Value::Row(result.into()).tagged(value.tag()));
         }
+        else if let Some(v) = set_into {
+            let rows: Vec<Tagged<Value>> = input.values.collect().await;
+            let key = v.to_string();
 
-    if let Tagged {
-        item: true,
-        tag: Tag { span, .. },
-    } = clear
-    {
+            if rows.len() == 0 {
+                yield Err(ShellError::labeled_error("No values given for set_into", "needs value(s) from pipeline", v.tag()));
+            } else if rows.len() == 1 {
+                // A single value
+                let value = &rows[0];
+
+                result.insert(key.to_string(), value.clone());
+
+                config::write(&result, &configuration)?;
+
+                yield ReturnSuccess::value(Value::Row(result.into()).tagged(name));
+            } else {
+                // Take in the pipeline as a table
+                let value = Value::Table(rows).tagged(name.clone());
+
+                result.insert(key.to_string(), value.clone());
+
+                config::write(&result, &configuration)?;
+
+                yield ReturnSuccess::value(Value::Row(result.into()).tagged(name));
+            }
+        }
+        else if let Tagged { item: true, tag } = clear {
             result.clear();
 
-        config::write_config(&result)?;
+            config::write(&result, &configuration)?;
 
-        return Ok(stream![Tagged::from_simple_spanned_item(
-            Value::Object(result.into()),
-            span
-        )]
-        .from_input_stream());
+            yield ReturnSuccess::value(Value::Row(result.into()).tagged(tag));
+
+            return;
         }
+        else if let Tagged { item: true, tag } = path {
+            let path = config::default_path_for(&configuration)?;
 
-    if let Tagged {
-        item: true,
-        tag: Tag { span, .. },
-    } = path
-    {
-        let path = config::config_path()?;
-
-        return Ok(stream![Tagged::from_simple_spanned_item(
-            Value::Primitive(Primitive::Path(path)),
-            span
-        )]
-        .from_input_stream());
+            yield ReturnSuccess::value(Value::Primitive(Primitive::Path(path)).tagged(tag));
         }
-
-    if let Some(v) = remove {
+        else if let Some(v) = remove {
             let key = v.to_string();
 
             if result.contains_key(&key) {
-            result.remove(&key);
+                result.swap_remove(&key);
+                config::write(&result, &configuration).unwrap();
             } else {
-            return Err(ShellError::string(&format!(
-                "{} does not exist in config",
-                key
-            )));
+                yield Err(ShellError::labeled_error(
+                    "Key does not exist in config",
+                    "key",
+                    v.tag(),
+                ));
             }
 
-        let obj = VecDeque::from_iter(vec![Value::Object(result.into()).simple_spanned(v.span())]);
-        return Ok(obj.from_input_stream());
+            yield ReturnSuccess::value(Value::Row(result.into()).tagged(v.tag()));
         }
+        else {
+            yield ReturnSuccess::value(Value::Row(result.into()).tagged(name));
+        }
+    };
 
-    return Ok(vec![Value::Object(result.into()).simple_spanned(name)].into());
+    Ok(stream.to_output_stream())
 }

src/commands/count.rs

@@ -0,0 +1,46 @@
+use crate::commands::WholeStreamCommand;
+use crate::data::Value;
+use crate::errors::ShellError;
+use crate::parser::CommandRegistry;
+use crate::prelude::*;
+use futures::stream::StreamExt;
+
+pub struct Count;
+
+#[derive(Deserialize)]
+pub struct CountArgs {}
+
+impl WholeStreamCommand for Count {
+    fn name(&self) -> &str {
+        "count"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("count")
+    }
+
+    fn usage(&self) -> &str {
+        "Show the total number of rows."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        args.process(registry, count)?.run()
+    }
+}
+
+pub fn count(
+    CountArgs {}: CountArgs,
+    RunnableContext { input, name, .. }: RunnableContext,
+) -> Result<OutputStream, ShellError> {
+    let stream = async_stream! {
+        let rows: Vec<Tagged<Value>> = input.values.collect().await;
+
+        yield ReturnSuccess::value(Value::int(rows.len()).tagged(name))
+    };
+
+    Ok(stream.to_output_stream())
+}

src/commands/cp.rs

@@ -1,6 +1,6 @@
 use crate::commands::command::RunnablePerItemContext;
 use crate::errors::ShellError;
-use crate::parser::hir::SyntaxType;
+use crate::parser::hir::SyntaxShape;
 use crate::parser::registry::{CommandRegistry, Signature};
 use crate::prelude::*;
 use std::path::PathBuf;
@@ -15,33 +15,33 @@ pub struct CopyArgs {
 }
 
 impl PerItemCommand for Cpy {
-    fn run(
-        &self,
-        call_info: &CallInfo,
-        _registry: &CommandRegistry,
-        shell_manager: &ShellManager,
-        _input: Tagged<Value>,
-    ) -> Result<VecDeque<ReturnValue>, ShellError> {
-        call_info.process(shell_manager, cp)?.run()
-    }
-
     fn name(&self) -> &str {
         "cp"
     }
 
     fn signature(&self) -> Signature {
         Signature::build("cp")
-            .required("src", SyntaxType::Path)
-            .required("dst", SyntaxType::Path)
-            .named("file", SyntaxType::Any)
-            .switch("recursive")
+            .required("src", SyntaxShape::Pattern, "the place to copy from")
+            .required("dst", SyntaxShape::Path, "the place to copy to")
+            .switch("recursive", "copy recursively through subdirectories")
+    }
+
+    fn usage(&self) -> &str {
+        "Copy files."
+    }
+
+    fn run(
+        &self,
+        call_info: &CallInfo,
+        _registry: &CommandRegistry,
+        raw_args: &RawCommandArgs,
+        _input: Tagged<Value>,
+    ) -> Result<OutputStream, ShellError> {
+        call_info.process(&raw_args.shell_manager, cp)?.run()
     }
 }
 
-fn cp(
-    args: CopyArgs,
-    context: &RunnablePerItemContext,
-) -> Result<VecDeque<ReturnValue>, ShellError> {
+fn cp(args: CopyArgs, context: &RunnablePerItemContext) -> Result<OutputStream, ShellError> {
     let shell_manager = context.shell_manager.clone();
     shell_manager.cp(args, context)
 }

src/commands/date.rs

@@ -1,5 +1,5 @@
+use crate::data::{Dictionary, Value};
 use crate::errors::ShellError;
-use crate::object::{Dictionary, Value};
 use crate::prelude::*;
 use chrono::{DateTime, Local, Utc};
 
@@ -12,6 +12,20 @@ use indexmap::IndexMap;
 pub struct Date;
 
 impl WholeStreamCommand for Date {
+    fn name(&self) -> &str {
+        "date"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("date")
+            .switch("utc", "use universal time (UTC)")
+            .switch("local", "use the local time")
+    }
+
+    fn usage(&self) -> &str {
+        "Get the current datetime."
+    }
+
     fn run(
         &self,
         args: CommandArgs,
@@ -19,67 +33,42 @@ impl WholeStreamCommand for Date {
     ) -> Result<OutputStream, ShellError> {
         date(args, registry)
     }
-    fn name(&self) -> &str {
-        "date"
 }
 
-    fn signature(&self) -> Signature {
-        Signature::build("date").switch("utc").switch("local")
-    }
-}
-
-pub fn date_to_value<T: TimeZone>(dt: DateTime<T>, span: Span) -> Tagged<Value>
+pub fn date_to_value<T: TimeZone>(dt: DateTime<T>, tag: Tag) -> Tagged<Value>
 where
     T::Offset: Display,
 {
     let mut indexmap = IndexMap::new();
 
-    indexmap.insert(
-        "year".to_string(),
-        Tagged::from_simple_spanned_item(Value::int(dt.year()), span),
-    );
-    indexmap.insert(
-        "month".to_string(),
-        Tagged::from_simple_spanned_item(Value::int(dt.month()), span),
-    );
-    indexmap.insert(
-        "day".to_string(),
-        Tagged::from_simple_spanned_item(Value::int(dt.day()), span),
-    );
-    indexmap.insert(
-        "hour".to_string(),
-        Tagged::from_simple_spanned_item(Value::int(dt.hour()), span),
-    );
-    indexmap.insert(
-        "minute".to_string(),
-        Tagged::from_simple_spanned_item(Value::int(dt.minute()), span),
-    );
-    indexmap.insert(
-        "second".to_string(),
-        Tagged::from_simple_spanned_item(Value::int(dt.second()), span),
-    );
+    indexmap.insert("year".to_string(), Value::int(dt.year()).tagged(&tag));
+    indexmap.insert("month".to_string(), Value::int(dt.month()).tagged(&tag));
+    indexmap.insert("day".to_string(), Value::int(dt.day()).tagged(&tag));
+    indexmap.insert("hour".to_string(), Value::int(dt.hour()).tagged(&tag));
+    indexmap.insert("minute".to_string(), Value::int(dt.minute()).tagged(&tag));
+    indexmap.insert("second".to_string(), Value::int(dt.second()).tagged(&tag));
 
     let tz = dt.offset();
     indexmap.insert(
         "timezone".to_string(),
-        Tagged::from_simple_spanned_item(Value::string(format!("{}", tz)), span),
+        Value::string(format!("{}", tz)).tagged(&tag),
     );
 
-    Tagged::from_simple_spanned_item(Value::Object(Dictionary::from(indexmap)), span)
+    Value::Row(Dictionary::from(indexmap)).tagged(&tag)
 }
 
 pub fn date(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
     let args = args.evaluate_once(registry)?;
 
     let mut date_out = VecDeque::new();
-    let span = args.call_info.name_span;
+    let tag = args.call_info.name_tag.clone();
 
     let value = if args.has("utc") {
         let utc: DateTime<Utc> = Utc::now();
-        date_to_value(utc, span)
+        date_to_value(utc, tag)
     } else {
         let local: DateTime<Local> = Local::now();
-        date_to_value(local, span)
+        date_to_value(local, tag)
     };
 
     date_out.push_back(value);

src/commands/debug.rs

@@ -5,14 +5,6 @@ use crate::prelude::*;
 pub struct Debug;
 
 impl WholeStreamCommand for Debug {
-    fn run(
-        &self,
-        args: CommandArgs,
-        registry: &CommandRegistry,
-    ) -> Result<OutputStream, ShellError> {
-        debug(args, registry)
-    }
-
     fn name(&self) -> &str {
         "debug"
     }
@@ -20,6 +12,18 @@ impl WholeStreamCommand for Debug {
     fn signature(&self) -> Signature {
         Signature::build("debug")
     }
+
+    fn usage(&self) -> &str {
+        "Debug input fed."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        debug(args, registry)
+    }
 }
 
 pub fn debug(args: CommandArgs, _registry: &CommandRegistry) -> Result<OutputStream, ShellError> {

src/commands/echo.rs

@@ -0,0 +1,68 @@
+use crate::data::Value;
+use crate::errors::ShellError;
+use crate::prelude::*;
+
+use crate::parser::registry::Signature;
+
+pub struct Echo;
+
+impl PerItemCommand for Echo {
+    fn name(&self) -> &str {
+        "echo"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("echo").rest(SyntaxShape::Any, "the values to echo")
+    }
+
+    fn usage(&self) -> &str {
+        "Echo the arguments back to the user."
+    }
+
+    fn run(
+        &self,
+        call_info: &CallInfo,
+        registry: &CommandRegistry,
+        raw_args: &RawCommandArgs,
+        _input: Tagged<Value>,
+    ) -> Result<OutputStream, ShellError> {
+        run(call_info, registry, raw_args)
+    }
+}
+
+fn run(
+    call_info: &CallInfo,
+    _registry: &CommandRegistry,
+    _raw_args: &RawCommandArgs,
+) -> Result<OutputStream, ShellError> {
+    let mut output = vec![];
+
+    if let Some(ref positional) = call_info.args.positional {
+        for i in positional {
+            match i.as_string() {
+                Ok(s) => {
+                    output.push(Ok(ReturnSuccess::Value(
+                        Value::string(s).tagged(i.tag.clone()),
+                    )));
+                }
+                _ => match i {
+                    Tagged {
+                        item: Value::Table(table),
+                        ..
+                    } => {
+                        for item in table {
+                            output.push(Ok(ReturnSuccess::Value(item.clone())));
+                        }
+                    }
+                    _ => {
+                        output.push(Ok(ReturnSuccess::Value(i.clone())));
+                    }
+                },
+            }
+        }
+    }
+
+    let stream = VecDeque::from(output);
+
+    Ok(stream.to_output_stream())
+}

src/commands/enter.rs

@@ -1,8 +1,10 @@
 use crate::commands::command::CommandAction;
 use crate::commands::PerItemCommand;
+use crate::commands::UnevaluatedCallInfo;
 use crate::errors::ShellError;
 use crate::parser::registry;
 use crate::prelude::*;
+use std::path::PathBuf;
 
 pub struct Enter;
 
@@ -12,24 +14,132 @@ impl PerItemCommand for Enter {
     }
 
     fn signature(&self) -> registry::Signature {
-        Signature::build("enter").required("location", SyntaxType::Block)
+        Signature::build("enter").required(
+            "location",
+            SyntaxShape::Path,
+            "the location to create a new shell from",
+        )
+    }
+
+    fn usage(&self) -> &str {
+        "Create a new shell and begin at this path."
     }
 
     fn run(
         &self,
         call_info: &CallInfo,
-        _registry: &registry::CommandRegistry,
-        _shell_manager: &ShellManager,
+        registry: &registry::CommandRegistry,
+        raw_args: &RawCommandArgs,
         _input: Tagged<Value>,
-    ) -> Result<VecDeque<ReturnValue>, ShellError> {
+    ) -> Result<OutputStream, ShellError> {
+        let registry = registry.clone();
+        let raw_args = raw_args.clone();
         match call_info.args.expect_nth(0)? {
             Tagged {
-                item: Value::Primitive(Primitive::String(location)),
+                item: Value::Primitive(Primitive::Path(location)),
+                tag,
                 ..
-            } => Ok(vec![Ok(ReturnSuccess::Action(CommandAction::EnterShell(
-                location.to_string(),
+            } => {
+                let location_string = location.display().to_string();
+                let location_clone = location_string.clone();
+                let tag_clone = tag.clone();
+
+                if location.starts_with("help") {
+                    let spec = location_string.split(":").collect::<Vec<&str>>();
+
+                    let (_, command) = (spec[0], spec[1]);
+
+                    if registry.has(command) {
+                        Ok(vec![Ok(ReturnSuccess::Action(CommandAction::EnterHelpShell(
+                            Value::string(command).tagged(Tag::unknown()),
                         )))]
-            .into()),
+                        .into())
+                    } else {
+                        Ok(vec![Ok(ReturnSuccess::Action(CommandAction::EnterHelpShell(
+                            Value::nothing().tagged(Tag::unknown()),
+                        )))]
+                        .into())
+                    }
+                } else if PathBuf::from(location).is_dir() {
+                    Ok(vec![Ok(ReturnSuccess::Action(CommandAction::EnterShell(
+                        location_clone,
+                    )))]
+                    .into())
+                } else {
+                    let stream = async_stream! {
+                        // If it's a file, attempt to open the file as a value and enter it
+                        let cwd = raw_args.shell_manager.path();
+
+                        let full_path = std::path::PathBuf::from(cwd);
+
+                        let (file_extension, contents, contents_tag) =
+                            crate::commands::open::fetch(
+                                &full_path,
+                                &location_clone,
+                                tag_clone.span,
+                            ).await?;
+
+                        match contents {
+                            Value::Primitive(Primitive::String(_)) => {
+                                let tagged_contents = contents.tagged(&contents_tag);
+
+                                if let Some(extension) = file_extension {
+                                    let command_name = format!("from-{}", extension);
+                                    if let Some(converter) =
+                                        registry.get_command(&command_name)
+                                    {
+                                        let new_args = RawCommandArgs {
+                                            host: raw_args.host,
+                                            ctrl_c: raw_args.ctrl_c,
+                                            shell_manager: raw_args.shell_manager,
+                                            call_info: UnevaluatedCallInfo {
+                                                args: crate::parser::hir::Call {
+                                                    head: raw_args.call_info.args.head,
+                                                    positional: None,
+                                                    named: None,
+                                                },
+                                                source: raw_args.call_info.source,
+                                                name_tag: raw_args.call_info.name_tag,
+                                            },
+                                        };
+                                        let mut result = converter.run(
+                                            new_args.with_input(vec![tagged_contents]),
+                                            &registry,
+                                        );
+                                        let result_vec: Vec<Result<ReturnSuccess, ShellError>> =
+                                            result.drain_vec().await;
+                                        for res in result_vec {
+                                            match res {
+                                                Ok(ReturnSuccess::Value(Tagged {
+                                                    item,
+                                                    ..
+                                                })) => {
+                                                    yield Ok(ReturnSuccess::Action(CommandAction::EnterValueShell(
+                                                        Tagged {
+                                                            item,
+                                                            tag: contents_tag.clone(),
+                                                        })));
+                                                }
+                                                x => yield x,
+                                            }
+                                        }
+                                    } else {
+                                        yield Ok(ReturnSuccess::Action(CommandAction::EnterValueShell(tagged_contents)));
+                                    }
+                                } else {
+                                    yield Ok(ReturnSuccess::Action(CommandAction::EnterValueShell(tagged_contents)));
+                                }
+                            }
+                            _ => {
+                                let tagged_contents = contents.tagged(contents_tag);
+
+                                yield Ok(ReturnSuccess::Action(CommandAction::EnterValueShell(tagged_contents)));
+                            }
+                        }
+                    };
+                    Ok(stream.to_output_stream())
+                }
+            }
             x => Ok(
                 vec![Ok(ReturnSuccess::Action(CommandAction::EnterValueShell(
                     x.clone(),

src/commands/env.rs

@@ -0,0 +1,76 @@
+use crate::cli::History;
+use crate::data::config;
+use crate::data::{Dictionary, Value};
+use crate::errors::ShellError;
+use crate::prelude::*;
+use crate::TaggedDictBuilder;
+
+use crate::commands::WholeStreamCommand;
+use crate::parser::registry::Signature;
+use indexmap::IndexMap;
+
+pub struct Env;
+
+impl WholeStreamCommand for Env {
+    fn name(&self) -> &str {
+        "env"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("env")
+    }
+
+    fn usage(&self) -> &str {
+        "Get the current environment."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        env(args, registry)
+    }
+}
+
+pub fn get_environment(tag: Tag) -> Result<Tagged<Value>, Box<dyn std::error::Error>> {
+    let mut indexmap = IndexMap::new();
+
+    let path = std::env::current_dir()?;
+    indexmap.insert("cwd".to_string(), Value::path(path).tagged(&tag));
+
+    if let Some(home) = dirs::home_dir() {
+        indexmap.insert("home".to_string(), Value::path(home).tagged(&tag));
+    }
+
+    let config = config::default_path()?;
+    indexmap.insert("config".to_string(), Value::path(config).tagged(&tag));
+
+    let history = History::path();
+    indexmap.insert("history".to_string(), Value::path(history).tagged(&tag));
+
+    let temp = std::env::temp_dir();
+    indexmap.insert("temp".to_string(), Value::path(temp).tagged(&tag));
+
+    let mut dict = TaggedDictBuilder::new(&tag);
+    for v in std::env::vars() {
+        dict.insert(v.0, Value::string(v.1));
+    }
+    if !dict.is_empty() {
+        indexmap.insert("vars".to_string(), dict.into_tagged_value());
+    }
+
+    Ok(Value::Row(Dictionary::from(indexmap)).tagged(&tag))
+}
+
+pub fn env(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
+    let args = args.evaluate_once(registry)?;
+
+    let mut env_out = VecDeque::new();
+    let tag = args.call_info.name_tag.clone();
+
+    let value = get_environment(tag)?;
+    env_out.push_back(value);
+
+    Ok(env_out.to_output_stream())
+}

src/commands/exit.rs

@@ -6,6 +6,18 @@ use crate::prelude::*;
 pub struct Exit;
 
 impl WholeStreamCommand for Exit {
+    fn name(&self) -> &str {
+        "exit"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("exit").switch("now", "exit out of the shell immediately")
+    }
+
+    fn usage(&self) -> &str {
+        "Exit the current shell (or all shells)"
+    }
+
     fn run(
         &self,
         args: CommandArgs,
@@ -13,14 +25,6 @@ impl WholeStreamCommand for Exit {
     ) -> Result<OutputStream, ShellError> {
         exit(args, registry)
     }
-
-    fn name(&self) -> &str {
-        "exit"
-    }
-
-    fn signature(&self) -> Signature {
-        Signature::build("exit").switch("now")
-    }
 }
 
 pub fn exit(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {

src/commands/fetch.rs

@@ -0,0 +1,288 @@
+use crate::commands::UnevaluatedCallInfo;
+use crate::context::AnchorLocation;
+use crate::data::meta::Span;
+use crate::data::Value;
+use crate::errors::ShellError;
+use crate::parser::hir::SyntaxShape;
+use crate::parser::registry::Signature;
+use crate::prelude::*;
+use mime::Mime;
+use std::path::PathBuf;
+use std::str::FromStr;
+use surf::mime;
+pub struct Fetch;
+
+impl PerItemCommand for Fetch {
+    fn name(&self) -> &str {
+        "fetch"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build(self.name())
+            .required(
+                "path",
+                SyntaxShape::Path,
+                "the URL to fetch the contents from",
+            )
+            .switch("raw", "fetch contents as text rather than a table")
+    }
+
+    fn usage(&self) -> &str {
+        "Load from a URL into a cell, convert to table if possible (avoid by appending '--raw')"
+    }
+
+    fn run(
+        &self,
+        call_info: &CallInfo,
+        registry: &CommandRegistry,
+        raw_args: &RawCommandArgs,
+        _input: Tagged<Value>,
+    ) -> Result<OutputStream, ShellError> {
+        run(call_info, registry, raw_args)
+    }
+}
+
+fn run(
+    call_info: &CallInfo,
+    registry: &CommandRegistry,
+    raw_args: &RawCommandArgs,
+) -> Result<OutputStream, ShellError> {
+    let path = match call_info.args.nth(0).ok_or_else(|| {
+        ShellError::labeled_error(
+            "No file or directory specified",
+            "for command",
+            &call_info.name_tag,
+        )
+    })? {
+        file => file,
+    };
+    let path_buf = path.as_path()?;
+    let path_str = path_buf.display().to_string();
+    let path_span = path.tag.span;
+    let has_raw = call_info.args.has("raw");
+    let registry = registry.clone();
+    let raw_args = raw_args.clone();
+
+    let stream = async_stream! {
+
+        let result = fetch(&path_str, path_span).await;
+
+        if let Err(e) = result {
+            yield Err(e);
+            return;
+        }
+        let (file_extension, contents, contents_tag) = result.unwrap();
+
+        let file_extension = if has_raw {
+            None
+        } else {
+            // If the extension could not be determined via mimetype, try to use the path
+            // extension. Some file types do not declare their mimetypes (such as bson files).
+            file_extension.or(path_str.split('.').last().map(String::from))
+        };
+
+        let tagged_contents = contents.tagged(&contents_tag);
+
+        if let Some(extension) = file_extension {
+            let command_name = format!("from-{}", extension);
+            if let Some(converter) = registry.get_command(&command_name) {
+                let new_args = RawCommandArgs {
+                    host: raw_args.host,
+                    ctrl_c: raw_args.ctrl_c,
+                    shell_manager: raw_args.shell_manager,
+                    call_info: UnevaluatedCallInfo {
+                        args: crate::parser::hir::Call {
+                            head: raw_args.call_info.args.head,
+                            positional: None,
+                            named: None
+                        },
+                        source: raw_args.call_info.source,
+                        name_tag: raw_args.call_info.name_tag,
+                    }
+                };
+                let mut result = converter.run(new_args.with_input(vec![tagged_contents]), &registry);
+                let result_vec: Vec<Result<ReturnSuccess, ShellError>> = result.drain_vec().await;
+                for res in result_vec {
+                    match res {
+                        Ok(ReturnSuccess::Value(Tagged { item: Value::Table(list), ..})) => {
+                            for l in list {
+                                yield Ok(ReturnSuccess::Value(l));
+                            }
+                        }
+                        Ok(ReturnSuccess::Value(Tagged { item, .. })) => {
+                            yield Ok(ReturnSuccess::Value(Tagged { item, tag: contents_tag.clone() }));
+                        }
+                        x => yield x,
+                    }
+                }
+            } else {
+                yield ReturnSuccess::value(tagged_contents);
+            }
+        } else {
+            yield ReturnSuccess::value(tagged_contents);
+        }
+    };
+
+    Ok(stream.to_output_stream())
+}
+
+pub async fn fetch(location: &str, span: Span) -> Result<(Option<String>, Value, Tag), ShellError> {
+    if let Err(_) = url::Url::parse(location) {
+        return Err(ShellError::labeled_error(
+            "Incomplete or incorrect url",
+            "expected a full url",
+            span,
+        ));
+    }
+
+    let response = surf::get(location).await;
+    match response {
+        Ok(mut r) => match r.headers().get("content-type") {
+            Some(content_type) => {
+                let content_type = Mime::from_str(content_type).unwrap();
+                match (content_type.type_(), content_type.subtype()) {
+                    (mime::APPLICATION, mime::XML) => Ok((
+                        Some("xml".to_string()),
+                        Value::string(r.body_string().await.map_err(|_| {
+                            ShellError::labeled_error(
+                                "Could not load text from remote url",
+                                "could not load",
+                                span,
+                            )
+                        })?),
+                        Tag {
+                            span,
+                            anchor: Some(AnchorLocation::Url(location.to_string())),
+                        },
+                    )),
+                    (mime::APPLICATION, mime::JSON) => Ok((
+                        Some("json".to_string()),
+                        Value::string(r.body_string().await.map_err(|_| {
+                            ShellError::labeled_error(
+                                "Could not load text from remote url",
+                                "could not load",
+                                span,
+                            )
+                        })?),
+                        Tag {
+                            span,
+                            anchor: Some(AnchorLocation::Url(location.to_string())),
+                        },
+                    )),
+                    (mime::APPLICATION, mime::OCTET_STREAM) => {
+                        let buf: Vec<u8> = r.body_bytes().await.map_err(|_| {
+                            ShellError::labeled_error(
+                                "Could not load binary file",
+                                "could not load",
+                                span,
+                            )
+                        })?;
+                        Ok((
+                            None,
+                            Value::binary(buf),
+                            Tag {
+                                span,
+                                anchor: Some(AnchorLocation::Url(location.to_string())),
+                            },
+                        ))
+                    }
+                    (mime::IMAGE, mime::SVG) => Ok((
+                        Some("svg".to_string()),
+                        Value::string(r.body_string().await.map_err(|_| {
+                            ShellError::labeled_error(
+                                "Could not load svg from remote url",
+                                "could not load",
+                                span,
+                            )
+                        })?),
+                        Tag {
+                            span,
+                            anchor: Some(AnchorLocation::Url(location.to_string())),
+                        },
+                    )),
+                    (mime::IMAGE, image_ty) => {
+                        let buf: Vec<u8> = r.body_bytes().await.map_err(|_| {
+                            ShellError::labeled_error(
+                                "Could not load image file",
+                                "could not load",
+                                span,
+                            )
+                        })?;
+                        Ok((
+                            Some(image_ty.to_string()),
+                            Value::binary(buf),
+                            Tag {
+                                span,
+                                anchor: Some(AnchorLocation::Url(location.to_string())),
+                            },
+                        ))
+                    }
+                    (mime::TEXT, mime::HTML) => Ok((
+                        Some("html".to_string()),
+                        Value::string(r.body_string().await.map_err(|_| {
+                            ShellError::labeled_error(
+                                "Could not load text from remote url",
+                                "could not load",
+                                span,
+                            )
+                        })?),
+                        Tag {
+                            span,
+                            anchor: Some(AnchorLocation::Url(location.to_string())),
+                        },
+                    )),
+                    (mime::TEXT, mime::PLAIN) => {
+                        let path_extension = url::Url::parse(location)
+                            .unwrap()
+                            .path_segments()
+                            .and_then(|segments| segments.last())
+                            .and_then(|name| if name.is_empty() { None } else { Some(name) })
+                            .and_then(|name| {
+                                PathBuf::from(name)
+                                    .extension()
+                                    .map(|name| name.to_string_lossy().to_string())
+                            });
+
+                        Ok((
+                            path_extension,
+                            Value::string(r.body_string().await.map_err(|_| {
+                                ShellError::labeled_error(
+                                    "Could not load text from remote url",
+                                    "could not load",
+                                    span,
+                                )
+                            })?),
+                            Tag {
+                                span,
+                                anchor: Some(AnchorLocation::Url(location.to_string())),
+                            },
+                        ))
+                    }
+                    (ty, sub_ty) => Ok((
+                        None,
+                        Value::string(format!("Not yet supported MIME type: {} {}", ty, sub_ty)),
+                        Tag {
+                            span,
+                            anchor: Some(AnchorLocation::Url(location.to_string())),
+                        },
+                    )),
+                }
+            }
+            None => Ok((
+                None,
+                Value::string(format!("No content type found")),
+                Tag {
+                    span,
+                    anchor: Some(AnchorLocation::Url(location.to_string())),
+                },
+            )),
+        },
+        Err(_) => {
+            return Err(ShellError::labeled_error(
+                "URL could not be opened",
+                "url not found",
+                span,
+            ));
+        }
+    }
+}

src/commands/first.rs

@@ -5,41 +5,48 @@ use crate::prelude::*;
 
 pub struct First;
 
-impl WholeStreamCommand for First {
-    fn run(
-        &self,
-        args: CommandArgs,
-        registry: &CommandRegistry,
-    ) -> Result<OutputStream, ShellError> {
-        first(args, registry)
+#[derive(Deserialize)]
+pub struct FirstArgs {
+    rows: Option<Tagged<u64>>,
 }
 
+impl WholeStreamCommand for First {
     fn name(&self) -> &str {
         "first"
     }
 
     fn signature(&self) -> Signature {
-        Signature::build("first").required("amount", SyntaxType::Literal)
+        Signature::build("first").optional(
+            "rows",
+            SyntaxShape::Int,
+            "starting from the front, the number of rows to return",
+        )
+    }
+
+    fn usage(&self) -> &str {
+        "Show only the first number of rows."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        args.process(registry, first)?.run()
     }
 }
 
-fn first(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
-    let args = args.evaluate_once(registry)?;
-
-    let amount = args.expect_nth(0)?.as_i64();
-
-    let amount = match amount {
-        Ok(o) => o,
-        Err(_) => {
-            return Err(ShellError::labeled_error(
-                "Value is not a number",
-                "expected integer",
-                args.expect_nth(0)?.span(),
-            ))
-        }
+fn first(
+    FirstArgs { rows }: FirstArgs,
+    context: RunnableContext,
+) -> Result<OutputStream, ShellError> {
+    let rows_desired = if let Some(quantity) = rows {
+        *quantity
+    } else {
+        1
     };
 
     Ok(OutputStream::from_input(
-        args.input.values.take(amount as u64),
+        context.input.values.take(rows_desired),
     ))
 }

src/commands/format.rs

@@ -3,7 +3,7 @@ use crate::{EntriesListView, GenericView, TreeView};
 use futures::stream::{self, StreamExt};
 use std::sync::{Arc, Mutex};
 
-crate fn format(input: Vec<Value>, host: &mut dyn Host) {
+pub(crate) fn format(input: Vec<Value>, host: &mut dyn Host) {
     let last = input.len() - 1;
     for (i, item) in input.iter().enumerate() {
         let view = GenericView::new(item);

src/commands/from_array.rs

@@ -1,39 +0,0 @@
-use crate::commands::WholeStreamCommand;
-use crate::object::Value;
-use crate::prelude::*;
-
-pub struct FromArray;
-
-impl WholeStreamCommand for FromArray {
-    fn run(
-        &self,
-        args: CommandArgs,
-        registry: &CommandRegistry,
-    ) -> Result<OutputStream, ShellError> {
-        from_array(args, registry)
-    }
-
-    fn name(&self) -> &str {
-        "from-array"
-    }
-
-    fn signature(&self) -> Signature {
-        Signature::build("from-array")
-    }
-}
-
-fn from_array(args: CommandArgs, _registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
-    let stream = args
-        .input
-        .values
-        .map(|item| match item {
-            Tagged {
-                item: Value::List(vec),
-                ..
-            } => VecDeque::from(vec),
-            x => VecDeque::from(vec![x]),
-        })
-        .flatten();
-
-    Ok(stream.to_output_stream())
-}

src/commands/from_bson.rs

@@ -0,0 +1,236 @@
+use crate::commands::WholeStreamCommand;
+use crate::data::{Primitive, TaggedDictBuilder, Value};
+use crate::errors::ExpectedRange;
+use crate::prelude::*;
+use bson::{decode_document, spec::BinarySubtype, Bson};
+use std::str::FromStr;
+
+pub struct FromBSON;
+
+impl WholeStreamCommand for FromBSON {
+    fn name(&self) -> &str {
+        "from-bson"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("from-bson")
+    }
+
+    fn usage(&self) -> &str {
+        "Parse text as .bson and create table."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        from_bson(args, registry)
+    }
+}
+
+fn bson_array(input: &Vec<Bson>, tag: Tag) -> Result<Vec<Tagged<Value>>, ShellError> {
+    let mut out = vec![];
+
+    for value in input {
+        out.push(convert_bson_value_to_nu_value(value, &tag)?);
+    }
+
+    Ok(out)
+}
+
+fn convert_bson_value_to_nu_value(
+    v: &Bson,
+    tag: impl Into<Tag>,
+) -> Result<Tagged<Value>, ShellError> {
+    let tag = tag.into();
+
+    Ok(match v {
+        Bson::FloatingPoint(n) => Value::Primitive(Primitive::from(*n)).tagged(&tag),
+        Bson::String(s) => Value::Primitive(Primitive::String(String::from(s))).tagged(&tag),
+        Bson::Array(a) => Value::Table(bson_array(a, tag.clone())?).tagged(&tag),
+        Bson::Document(doc) => {
+            let mut collected = TaggedDictBuilder::new(tag.clone());
+            for (k, v) in doc.iter() {
+                collected.insert_tagged(k.clone(), convert_bson_value_to_nu_value(v, &tag)?);
+            }
+
+            collected.into_tagged_value()
+        }
+        Bson::Boolean(b) => Value::Primitive(Primitive::Boolean(*b)).tagged(&tag),
+        Bson::Null => Value::Primitive(Primitive::Nothing).tagged(&tag),
+        Bson::RegExp(r, opts) => {
+            let mut collected = TaggedDictBuilder::new(tag.clone());
+            collected.insert_tagged(
+                "$regex".to_string(),
+                Value::Primitive(Primitive::String(String::from(r))).tagged(&tag),
+            );
+            collected.insert_tagged(
+                "$options".to_string(),
+                Value::Primitive(Primitive::String(String::from(opts))).tagged(&tag),
+            );
+            collected.into_tagged_value()
+        }
+        Bson::I32(n) => Value::number(n).tagged(&tag),
+        Bson::I64(n) => Value::number(n).tagged(&tag),
+        Bson::Decimal128(n) => {
+            // TODO: this really isn't great, and we should update this to do a higher
+            // fidelity translation
+            let decimal = BigDecimal::from_str(&format!("{}", n)).map_err(|_| {
+                ShellError::range_error(
+                    ExpectedRange::BigDecimal,
+                    &n.tagged(&tag),
+                    format!("converting BSON Decimal128 to BigDecimal"),
+                )
+            })?;
+            Value::Primitive(Primitive::Decimal(decimal)).tagged(&tag)
+        }
+        Bson::JavaScriptCode(js) => {
+            let mut collected = TaggedDictBuilder::new(tag.clone());
+            collected.insert_tagged(
+                "$javascript".to_string(),
+                Value::Primitive(Primitive::String(String::from(js))).tagged(&tag),
+            );
+            collected.into_tagged_value()
+        }
+        Bson::JavaScriptCodeWithScope(js, doc) => {
+            let mut collected = TaggedDictBuilder::new(tag.clone());
+            collected.insert_tagged(
+                "$javascript".to_string(),
+                Value::Primitive(Primitive::String(String::from(js))).tagged(&tag),
+            );
+            collected.insert_tagged(
+                "$scope".to_string(),
+                convert_bson_value_to_nu_value(&Bson::Document(doc.to_owned()), tag.clone())?,
+            );
+            collected.into_tagged_value()
+        }
+        Bson::TimeStamp(ts) => {
+            let mut collected = TaggedDictBuilder::new(tag.clone());
+            collected.insert_tagged("$timestamp".to_string(), Value::number(ts).tagged(&tag));
+            collected.into_tagged_value()
+        }
+        Bson::Binary(bst, bytes) => {
+            let mut collected = TaggedDictBuilder::new(tag.clone());
+            collected.insert_tagged(
+                "$binary_subtype".to_string(),
+                match bst {
+                    BinarySubtype::UserDefined(u) => Value::number(u),
+                    _ => Value::Primitive(Primitive::String(binary_subtype_to_string(*bst))),
+                }
+                .tagged(&tag),
+            );
+            collected.insert_tagged(
+                "$binary".to_string(),
+                Value::Primitive(Primitive::Binary(bytes.to_owned())).tagged(&tag),
+            );
+            collected.into_tagged_value()
+        }
+        Bson::ObjectId(obj_id) => {
+            let mut collected = TaggedDictBuilder::new(tag.clone());
+            collected.insert_tagged(
+                "$object_id".to_string(),
+                Value::Primitive(Primitive::String(obj_id.to_hex())).tagged(&tag),
+            );
+            collected.into_tagged_value()
+        }
+        Bson::UtcDatetime(dt) => Value::Primitive(Primitive::Date(*dt)).tagged(&tag),
+        Bson::Symbol(s) => {
+            let mut collected = TaggedDictBuilder::new(tag.clone());
+            collected.insert_tagged(
+                "$symbol".to_string(),
+                Value::Primitive(Primitive::String(String::from(s))).tagged(&tag),
+            );
+            collected.into_tagged_value()
+        }
+    })
+}
+
+fn binary_subtype_to_string(bst: BinarySubtype) -> String {
+    match bst {
+        BinarySubtype::Generic => "generic",
+        BinarySubtype::Function => "function",
+        BinarySubtype::BinaryOld => "binary_old",
+        BinarySubtype::UuidOld => "uuid_old",
+        BinarySubtype::Uuid => "uuid",
+        BinarySubtype::Md5 => "md5",
+        _ => unreachable!(),
+    }
+    .to_string()
+}
+
+#[derive(Debug)]
+struct BytesReader {
+    pos: usize,
+    inner: Vec<u8>,
+}
+
+impl BytesReader {
+    fn new(bytes: Vec<u8>) -> BytesReader {
+        BytesReader {
+            pos: 0,
+            inner: bytes,
+        }
+    }
+}
+
+impl std::io::Read for BytesReader {
+    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
+        let src: &mut &[u8] = &mut self.inner[self.pos..].as_ref();
+        let diff = src.read(buf)?;
+        self.pos += diff;
+        Ok(diff)
+    }
+}
+
+pub fn from_bson_bytes_to_value(
+    bytes: Vec<u8>,
+    tag: impl Into<Tag>,
+) -> Result<Tagged<Value>, ShellError> {
+    let mut docs = Vec::new();
+    let mut b_reader = BytesReader::new(bytes);
+    while let Ok(v) = decode_document(&mut b_reader) {
+        docs.push(Bson::Document(v));
+    }
+
+    convert_bson_value_to_nu_value(&Bson::Array(docs), tag)
+}
+
+fn from_bson(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
+    let args = args.evaluate_once(registry)?;
+    let tag = args.name_tag();
+    let input = args.input;
+
+    let stream = async_stream! {
+        let values: Vec<Tagged<Value>> = input.values.collect().await;
+
+        for value in values {
+            let value_tag = value.tag();
+            match value.item {
+                Value::Primitive(Primitive::Binary(vb)) =>
+                    match from_bson_bytes_to_value(vb, tag.clone()) {
+                        Ok(x) => yield ReturnSuccess::value(x),
+                        Err(_) => {
+                            yield Err(ShellError::labeled_error_with_secondary(
+                                "Could not parse as BSON",
+                                "input cannot be parsed as BSON",
+                                tag.clone(),
+                                "value originates from here",
+                                value_tag,
+                            ))
+                        }
+                    }
+                _ => yield Err(ShellError::labeled_error_with_secondary(
+                    "Expected a string from pipeline",
+                    "requires string input",
+                    tag.clone(),
+                    "value originates from here",
+                    value_tag,
+                )),
+
+            }
+        }
+    };
+
+    Ok(stream.to_output_stream())
+}

src/commands/from_csv.rs

@@ -1,30 +1,41 @@
 use crate::commands::WholeStreamCommand;
-use crate::object::{Primitive, TaggedDictBuilder, Value};
+use crate::data::{Primitive, TaggedDictBuilder, Value};
 use crate::prelude::*;
 use csv::ReaderBuilder;
 
 pub struct FromCSV;
 
-impl WholeStreamCommand for FromCSV {
-    fn run(
-        &self,
-        args: CommandArgs,
-        registry: &CommandRegistry,
-    ) -> Result<OutputStream, ShellError> {
-        from_csv(args, registry)
+#[derive(Deserialize)]
+pub struct FromCSVArgs {
+    headerless: bool,
 }
 
+impl WholeStreamCommand for FromCSV {
     fn name(&self) -> &str {
         "from-csv"
     }
 
     fn signature(&self) -> Signature {
         Signature::build("from-csv")
+            .switch("headerless", "don't treat the first row as column names")
+    }
+
+    fn usage(&self) -> &str {
+        "Parse text as .csv and create table"
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        args.process(registry, from_csv)?.run()
     }
 }
 
 pub fn from_csv_string_to_value(
     s: String,
+    headerless: bool,
     tag: impl Into<Tag>,
 ) -> Result<Tagged<Value>, csv::Error> {
     let mut reader = ReaderBuilder::new()
@@ -39,21 +50,25 @@ pub fn from_csv_string_to_value(
     if let Some(result) = iter.next() {
         let line = result?;
 
-        for item in line.iter() {
+        for (idx, item) in line.iter().enumerate() {
+            if headerless {
+                fields.push_back(format!("Column{}", idx + 1));
+            } else {
                 fields.push_back(item.to_string());
             }
         }
+    }
 
     loop {
         if let Some(row_values) = iter.next() {
             let row_values = row_values?;
 
-            let mut row = TaggedDictBuilder::new(tag);
+            let mut row = TaggedDictBuilder::new(tag.clone());
 
             for (idx, entry) in row_values.iter().enumerate() {
                 row.insert_tagged(
                     fields.get(idx).unwrap(),
-                    Value::Primitive(Primitive::String(String::from(entry))).tagged(tag),
+                    Value::Primitive(Primitive::String(String::from(entry))).tagged(&tag),
                 );
             }
 
@@ -63,15 +78,18 @@ pub fn from_csv_string_to_value(
         }
     }
 
-    Ok(Tagged::from_item(Value::List(rows), tag))
+    Ok(Value::Table(rows).tagged(&tag))
 }
 
-fn from_csv(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
-    let args = args.evaluate_once(registry)?;
-    let span = args.name_span();
-    let input = args.input;
+fn from_csv(
+    FromCSVArgs {
+        headerless: skip_headers,
+    }: FromCSVArgs,
+    RunnableContext { input, name, .. }: RunnableContext,
+) -> Result<OutputStream, ShellError> {
+    let name_tag = name;
 
-    let stream = async_stream_block! {
+    let stream = async_stream! {
         let values: Vec<Tagged<Value>> = input.values.collect().await;
 
         let mut concat_string = String::new();
@@ -79,7 +97,7 @@ fn from_csv(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
 
         for value in values {
             let value_tag = value.tag();
-            latest_tag = Some(value_tag);
+            latest_tag = Some(value_tag.clone());
             match value.item {
                 Value::Primitive(Primitive::String(s)) => {
                     concat_string.push_str(&s);
@@ -88,23 +106,30 @@ fn from_csv(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
                 _ => yield Err(ShellError::labeled_error_with_secondary(
                     "Expected a string from pipeline",
                     "requires string input",
-                    span,
+                    name_tag.clone(),
                     "value originates from here",
-                    value_tag.span,
+                    value_tag.clone(),
                 )),
 
             }
         }
 
-        match from_csv_string_to_value(concat_string, span) {
-            Ok(x) => yield ReturnSuccess::value(x),
+        match from_csv_string_to_value(concat_string, skip_headers, name_tag.clone()) {
+            Ok(x) => match x {
+                Tagged { item: Value::Table(list), .. } => {
+                    for l in list {
+                        yield ReturnSuccess::value(l);
+                    }
+                }
+                x => yield ReturnSuccess::value(x),
+            },
             Err(_) => if let Some(last_tag) = latest_tag {
                 yield Err(ShellError::labeled_error_with_secondary(
                     "Could not parse as CSV",
                     "input cannot be parsed as CSV",
-                    span,
+                    name_tag.clone(),
                     "value originates from here",
-                    last_tag.span,
+                    last_tag.clone(),
                 ))
             } ,
         }

src/commands/from_ini.rs

@@ -1,19 +1,11 @@
 use crate::commands::WholeStreamCommand;
-use crate::object::{Primitive, TaggedDictBuilder, Value};
+use crate::data::{Primitive, TaggedDictBuilder, Value};
 use crate::prelude::*;
 use std::collections::HashMap;
 
 pub struct FromINI;
 
 impl WholeStreamCommand for FromINI {
-    fn run(
-        &self,
-        args: CommandArgs,
-        registry: &CommandRegistry,
-    ) -> Result<OutputStream, ShellError> {
-        from_ini(args, registry)
-    }
-
     fn name(&self) -> &str {
         "from-ini"
     }
@@ -21,6 +13,18 @@ impl WholeStreamCommand for FromINI {
     fn signature(&self) -> Signature {
         Signature::build("from-ini")
     }
+
+    fn usage(&self) -> &str {
+        "Parse text as .ini and create table"
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        from_ini(args, registry)
+    }
 }
 
 fn convert_ini_second_to_nu_value(
@@ -41,10 +45,13 @@ fn convert_ini_top_to_nu_value(
     tag: impl Into<Tag>,
 ) -> Tagged<Value> {
     let tag = tag.into();
-    let mut top_level = TaggedDictBuilder::new(tag);
+    let mut top_level = TaggedDictBuilder::new(tag.clone());
 
     for (key, value) in v.iter() {
-        top_level.insert_tagged(key.clone(), convert_ini_second_to_nu_value(value, tag));
+        top_level.insert_tagged(
+            key.clone(),
+            convert_ini_second_to_nu_value(value, tag.clone()),
+        );
     }
 
     top_level.into_tagged_value()
@@ -60,10 +67,10 @@ pub fn from_ini_string_to_value(
 
 fn from_ini(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
     let args = args.evaluate_once(registry)?;
-    let span = args.name_span();
+    let tag = args.name_tag();
     let input = args.input;
 
-    let stream = async_stream_block! {
+    let stream = async_stream! {
         let values: Vec<Tagged<Value>> = input.values.collect().await;
 
         let mut concat_string = String::new();
@@ -71,7 +78,7 @@ fn from_ini(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
 
         for value in values {
             let value_tag = value.tag();
-            latest_tag = Some(value_tag);
+            latest_tag = Some(value_tag.clone());
             match value.item {
                 Value::Primitive(Primitive::String(s)) => {
                     concat_string.push_str(&s);
@@ -80,23 +87,30 @@ fn from_ini(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
                 _ => yield Err(ShellError::labeled_error_with_secondary(
                     "Expected a string from pipeline",
                     "requires string input",
-                    span,
+                    &tag,
                     "value originates from here",
-                    value_tag.span,
+                    &value_tag,
                 )),
 
             }
         }
 
-        match from_ini_string_to_value(concat_string, span) {
-            Ok(x) => yield ReturnSuccess::value(x),
+        match from_ini_string_to_value(concat_string, tag.clone()) {
+            Ok(x) => match x {
+                Tagged { item: Value::Table(list), .. } => {
+                    for l in list {
+                        yield ReturnSuccess::value(l);
+                    }
+                }
+                x => yield ReturnSuccess::value(x),
+            },
             Err(_) => if let Some(last_tag) = latest_tag {
                 yield Err(ShellError::labeled_error_with_secondary(
                     "Could not parse as INI",
                     "input cannot be parsed as INI",
-                    span,
+                    &tag,
                     "value originates from here",
-                    last_tag.span,
+                    last_tag,
                 ))
             } ,
         }

src/commands/from_json.rs

@@ -1,25 +1,33 @@
 use crate::commands::WholeStreamCommand;
-use crate::object::base::OF64;
-use crate::object::{Primitive, TaggedDictBuilder, Value};
+use crate::data::{Primitive, TaggedDictBuilder, Value};
 use crate::prelude::*;
 
 pub struct FromJSON;
 
-impl WholeStreamCommand for FromJSON {
-    fn run(
-        &self,
-        args: CommandArgs,
-        registry: &CommandRegistry,
-    ) -> Result<OutputStream, ShellError> {
-        from_json(args, registry)
+#[derive(Deserialize)]
+pub struct FromJSONArgs {
+    objects: bool,
 }
 
+impl WholeStreamCommand for FromJSON {
     fn name(&self) -> &str {
         "from-json"
     }
 
     fn signature(&self) -> Signature {
-        Signature::build("from-json")
+        Signature::build("from-json").switch("objects", "treat each line as a separate value")
+    }
+
+    fn usage(&self) -> &str {
+        "Parse text as .json and create table."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        args.process(registry, from_json)?.run()
     }
 }
 
@@ -27,28 +35,24 @@ fn convert_json_value_to_nu_value(v: &serde_hjson::Value, tag: impl Into<Tag>) -
     let tag = tag.into();
 
     match v {
-        serde_hjson::Value::Null => {
-            Value::Primitive(Primitive::String(String::from(""))).tagged(tag)
-        }
-        serde_hjson::Value::Bool(b) => Value::Primitive(Primitive::Boolean(*b)).tagged(tag),
-        serde_hjson::Value::F64(n) => {
-            Value::Primitive(Primitive::Float(OF64::from(*n))).tagged(tag)
-        }
-        serde_hjson::Value::U64(n) => Value::Primitive(Primitive::Int(*n as i64)).tagged(tag),
-        serde_hjson::Value::I64(n) => Value::Primitive(Primitive::Int(*n as i64)).tagged(tag),
+        serde_hjson::Value::Null => Value::Primitive(Primitive::Nothing).tagged(&tag),
+        serde_hjson::Value::Bool(b) => Value::boolean(*b).tagged(&tag),
+        serde_hjson::Value::F64(n) => Value::number(n).tagged(&tag),
+        serde_hjson::Value::U64(n) => Value::number(n).tagged(&tag),
+        serde_hjson::Value::I64(n) => Value::number(n).tagged(&tag),
         serde_hjson::Value::String(s) => {
-            Value::Primitive(Primitive::String(String::from(s))).tagged(tag)
+            Value::Primitive(Primitive::String(String::from(s))).tagged(&tag)
         }
-        serde_hjson::Value::Array(a) => Value::List(
+        serde_hjson::Value::Array(a) => Value::Table(
             a.iter()
-                .map(|x| convert_json_value_to_nu_value(x, tag))
+                .map(|x| convert_json_value_to_nu_value(x, &tag))
                 .collect(),
         )
         .tagged(tag),
         serde_hjson::Value::Object(o) => {
-            let mut collected = TaggedDictBuilder::new(tag);
+            let mut collected = TaggedDictBuilder::new(&tag);
             for (k, v) in o.iter() {
-                collected.insert_tagged(k.clone(), convert_json_value_to_nu_value(v, tag));
+                collected.insert_tagged(k.clone(), convert_json_value_to_nu_value(v, &tag));
             }
 
             collected.into_tagged_value()
@@ -64,12 +68,13 @@ pub fn from_json_string_to_value(
     Ok(convert_json_value_to_nu_value(&v, tag))
 }
 
-fn from_json(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
-    let args = args.evaluate_once(registry)?;
-    let span = args.name_span();
-    let input = args.input;
+fn from_json(
+    FromJSONArgs { objects }: FromJSONArgs,
+    RunnableContext { input, name, .. }: RunnableContext,
+) -> Result<OutputStream, ShellError> {
+    let name_tag = name;
 
-    let stream = async_stream_block! {
+    let stream = async_stream! {
         let values: Vec<Tagged<Value>> = input.values.collect().await;
 
         let mut concat_string = String::new();
@@ -77,7 +82,7 @@ fn from_json(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStre
 
         for value in values {
             let value_tag = value.tag();
-            latest_tag = Some(value_tag);
+            latest_tag = Some(value_tag.clone());
             match value.item {
                 Value::Primitive(Primitive::String(s)) => {
                     concat_string.push_str(&s);
@@ -86,25 +91,58 @@ fn from_json(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStre
                 _ => yield Err(ShellError::labeled_error_with_secondary(
                     "Expected a string from pipeline",
                     "requires string input",
-                    span,
+                    &name_tag,
                     "value originates from here",
-                    value_tag.span,
+                    &value_tag,
                 )),
 
             }
         }
 
-        match from_json_string_to_value(concat_string, span) {
-            Ok(x) => yield ReturnSuccess::value(x),
-            Err(_) => if let Some(last_tag) = latest_tag {
+
+        if objects {
+            for json_str in concat_string.lines() {
+                if json_str.is_empty() {
+                    continue;
+                }
+
+                match from_json_string_to_value(json_str.to_string(), &name_tag) {
+                    Ok(x) =>
+                        yield ReturnSuccess::value(x),
+                    Err(_) => {
+                        if let Some(ref last_tag) = latest_tag {
+                            yield Err(ShellError::labeled_error_with_secondary(
+                                "Could nnot parse as JSON",
+                                "input cannot be parsed as JSON",
+                                &name_tag,
+                                "value originates from here",
+                                last_tag))
+                        }
+                    }
+                }
+            }
+        } else {
+            match from_json_string_to_value(concat_string, name_tag.clone()) {
+                Ok(x) =>
+                    match x {
+                        Tagged { item: Value::Table(list), .. } => {
+                            for l in list {
+                                yield ReturnSuccess::value(l);
+                            }
+                        }
+                        x => yield ReturnSuccess::value(x),
+                    }
+                Err(_) => {
+                    if let Some(last_tag) = latest_tag {
                         yield Err(ShellError::labeled_error_with_secondary(
                             "Could not parse as JSON",
                             "input cannot be parsed as JSON",
-                    span,
+                            name_tag,
                             "value originates from here",
-                    last_tag.span,
-                ))
-            } ,
+                            last_tag))
+                    }
+                }
+            }
         }
     };
 

src/commands/from_sqlite.rs

@@ -0,0 +1,173 @@
+use crate::commands::WholeStreamCommand;
+use crate::data::{Primitive, TaggedDictBuilder, Value};
+use crate::errors::ShellError;
+use crate::prelude::*;
+use rusqlite::{types::ValueRef, Connection, Row, NO_PARAMS};
+use std::io::Write;
+use std::path::Path;
+
+pub struct FromSQLite;
+
+impl WholeStreamCommand for FromSQLite {
+    fn name(&self) -> &str {
+        "from-sqlite"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("from-sqlite")
+    }
+
+    fn usage(&self) -> &str {
+        "Parse binary data as sqlite .db and create table."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        from_sqlite(args, registry)
+    }
+}
+
+pub struct FromDB;
+
+impl WholeStreamCommand for FromDB {
+    fn name(&self) -> &str {
+        "from-db"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("from-db")
+    }
+
+    fn usage(&self) -> &str {
+        "Parse binary data as db and create table."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        from_sqlite(args, registry)
+    }
+}
+
+pub fn convert_sqlite_file_to_nu_value(
+    path: &Path,
+    tag: impl Into<Tag> + Clone,
+) -> Result<Tagged<Value>, rusqlite::Error> {
+    let conn = Connection::open(path)?;
+
+    let mut meta_out = Vec::new();
+    let mut meta_stmt = conn.prepare("select name from sqlite_master where type='table'")?;
+    let mut meta_rows = meta_stmt.query(NO_PARAMS)?;
+    while let Some(meta_row) = meta_rows.next()? {
+        let table_name: String = meta_row.get(0)?;
+        let mut meta_dict = TaggedDictBuilder::new(tag.clone());
+        let mut out = Vec::new();
+        let mut table_stmt = conn.prepare(&format!("select * from [{}]", table_name))?;
+        let mut table_rows = table_stmt.query(NO_PARAMS)?;
+        while let Some(table_row) = table_rows.next()? {
+            out.push(convert_sqlite_row_to_nu_value(table_row, tag.clone())?)
+        }
+        meta_dict.insert_tagged(
+            "table_name".to_string(),
+            Value::Primitive(Primitive::String(table_name)).tagged(tag.clone()),
+        );
+        meta_dict.insert_tagged("table_values", Value::Table(out).tagged(tag.clone()));
+        meta_out.push(meta_dict.into_tagged_value());
+    }
+    let tag = tag.into();
+    Ok(Value::Table(meta_out).tagged(tag))
+}
+
+fn convert_sqlite_row_to_nu_value(
+    row: &Row,
+    tag: impl Into<Tag> + Clone,
+) -> Result<Tagged<Value>, rusqlite::Error> {
+    let mut collected = TaggedDictBuilder::new(tag.clone());
+    for (i, c) in row.columns().iter().enumerate() {
+        collected.insert_tagged(
+            c.name().to_string(),
+            convert_sqlite_value_to_nu_value(row.get_raw(i), tag.clone()),
+        );
+    }
+    return Ok(collected.into_tagged_value());
+}
+
+fn convert_sqlite_value_to_nu_value(value: ValueRef, tag: impl Into<Tag> + Clone) -> Tagged<Value> {
+    match value {
+        ValueRef::Null => Value::Primitive(Primitive::String(String::from(""))).tagged(tag),
+        ValueRef::Integer(i) => Value::number(i).tagged(tag),
+        ValueRef::Real(f) => Value::number(f).tagged(tag),
+        t @ ValueRef::Text(_) => {
+            // this unwrap is safe because we know the ValueRef is Text.
+            Value::Primitive(Primitive::String(t.as_str().unwrap().to_string())).tagged(tag)
+        }
+        ValueRef::Blob(u) => Value::binary(u.to_owned()).tagged(tag),
+    }
+}
+
+pub fn from_sqlite_bytes_to_value(
+    mut bytes: Vec<u8>,
+    tag: impl Into<Tag> + Clone,
+) -> Result<Tagged<Value>, std::io::Error> {
+    // FIXME: should probably write a sqlite virtual filesystem
+    // that will allow us to use bytes as a file to avoid this
+    // write out, but this will require C code. Might be
+    // best done as a PR to rusqlite.
+    let mut tempfile = tempfile::NamedTempFile::new()?;
+    tempfile.write_all(bytes.as_mut_slice())?;
+    match convert_sqlite_file_to_nu_value(tempfile.path(), tag) {
+        Ok(value) => Ok(value),
+        Err(e) => Err(std::io::Error::new(std::io::ErrorKind::Other, e)),
+    }
+}
+
+fn from_sqlite(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
+    let args = args.evaluate_once(registry)?;
+    let tag = args.name_tag();
+    let input = args.input;
+
+    let stream = async_stream! {
+        let values: Vec<Tagged<Value>> = input.values.collect().await;
+
+        for value in values {
+            let value_tag = value.tag();
+            match value.item {
+                Value::Primitive(Primitive::Binary(vb)) =>
+                    match from_sqlite_bytes_to_value(vb, tag.clone()) {
+                        Ok(x) => match x {
+                            Tagged { item: Value::Table(list), .. } => {
+                                for l in list {
+                                    yield ReturnSuccess::value(l);
+                                }
+                            }
+                            _ => yield ReturnSuccess::value(x),
+                        }
+                        Err(_) => {
+                            yield Err(ShellError::labeled_error_with_secondary(
+                                "Could not parse as SQLite",
+                                "input cannot be parsed as SQLite",
+                                &tag,
+                                "value originates from here",
+                                value_tag,
+                            ))
+                        }
+                    }
+                _ => yield Err(ShellError::labeled_error_with_secondary(
+                    "Expected a string from pipeline",
+                    "requires string input",
+                    &tag,
+                    "value originates from here",
+                    value_tag,
+                )),
+
+            }
+        }
+    };
+
+    Ok(stream.to_output_stream())
+}

src/commands/from_ssv.rs

@@ -0,0 +1,360 @@
+use crate::commands::WholeStreamCommand;
+use crate::data::{Primitive, TaggedDictBuilder, Value};
+use crate::prelude::*;
+
+pub struct FromSSV;
+
+#[derive(Deserialize)]
+pub struct FromSSVArgs {
+    headerless: bool,
+    #[serde(rename(deserialize = "aligned-columns"))]
+    aligned_columns: bool,
+    #[serde(rename(deserialize = "minimum-spaces"))]
+    minimum_spaces: Option<Tagged<usize>>,
+}
+
+const STRING_REPRESENTATION: &str = "from-ssv";
+const DEFAULT_MINIMUM_SPACES: usize = 2;
+
+impl WholeStreamCommand for FromSSV {
+    fn name(&self) -> &str {
+        STRING_REPRESENTATION
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build(STRING_REPRESENTATION)
+            .switch("headerless", "don't treat the first row as column names")
+            .switch("aligned-columns", "assume columns are aligned")
+            .named(
+                "minimum-spaces",
+                SyntaxShape::Int,
+                "the mininum spaces to separate columns",
+            )
+    }
+
+    fn usage(&self) -> &str {
+        "Parse text as space-separated values and create a table. The default minimum number of spaces counted as a separator is 2."
+    }
+
+    fn run(
+        &self,
+        args: CommandArgs,
+        registry: &CommandRegistry,
+    ) -> Result<OutputStream, ShellError> {
+        args.process(registry, from_ssv)?.run()
+    }
+}
+
+fn string_to_table(
+    s: &str,
+    headerless: bool,
+    aligned_columns: bool,
+    split_at: usize,
+) -> Option<Vec<Vec<(String, String)>>> {
+    let mut lines = s.lines().filter(|l| !l.trim().is_empty());
+    let separator = " ".repeat(std::cmp::max(split_at, 1));
+
+    if aligned_columns {
+        let headers_raw = lines.next()?;
+
+        let headers = headers_raw
+            .trim()
+            .split(&separator)
+            .map(str::trim)
+            .filter(|s| !s.is_empty())
+            .map(|s| (headers_raw.find(s).unwrap(), s.to_owned()));
+
+        let columns = if headerless {
+            headers
+                .enumerate()
+                .map(|(header_no, (string_index, _))| {
+                    (string_index, format!("Column{}", header_no + 1))
+                })
+                .collect::<Vec<(usize, String)>>()
+        } else {
+            headers.collect::<Vec<(usize, String)>>()
+        };
+
+        Some(
+            lines
+                .map(|l| {
+                    columns
+                        .iter()
+                        .enumerate()
+                        .filter_map(|(i, (start, col))| {
+                            (match columns.get(i + 1) {
+                                Some((end, _)) => l.get(*start..*end),
+                                None => l.get(*start..),
+                            })
+                            .and_then(|s| Some((col.clone(), String::from(s.trim()))))
+                        })
+                        .collect()
+                })
+                .collect(),
+        )
+    } else {
+        let headers = lines
+            .next()?
+            .split(&separator)
+            .map(|s| s.trim())
+            .filter(|s| !s.is_empty())
+            .map(|s| s.to_owned())
+            .collect::<Vec<String>>();
+
+        let header_row = if headerless {
+            (1..=headers.len())
+                .map(|i| format!("Column{}", i))
+                .collect::<Vec<String>>()
+        } else {
+            headers
+        };
+
+        Some(
+            lines
+                .map(|l| {
+                    header_row
+                        .iter()
+                        .zip(
+                            l.split(&separator)
+                                .map(|s| s.trim())
+                                .filter(|s| !s.is_empty()),
+                        )
+                        .map(|(a, b)| (String::from(a), String::from(b)))
+                        .collect()
+                })
+                .collect(),
+        )
+    }
+}
+
+fn from_ssv_string_to_value(
+    s: &str,
+    headerless: bool,
+    aligned_columns: bool,
+    split_at: usize,
+    tag: impl Into<Tag>,
+) -> Option<Tagged<Value>> {
+    let tag = tag.into();
+    let rows = string_to_table(s, headerless, aligned_columns, split_at)?
+        .iter()
+        .map(|row| {
+            let mut tagged_dict = TaggedDictBuilder::new(&tag);
+            for (col, entry) in row {
+                tagged_dict.insert_tagged(
+                    col,
+                    Value::Primitive(Primitive::String(String::from(entry))).tagged(&tag),
+                )
+            }
+            tagged_dict.into_tagged_value()
+        })
+        .collect();
+
+    Some(Value::Table(rows).tagged(&tag))
+}
+
+fn from_ssv(
+    FromSSVArgs {
+        headerless,
+        aligned_columns,
+        minimum_spaces,
+    }: FromSSVArgs,
+    RunnableContext { input, name, .. }: RunnableContext,
+) -> Result<OutputStream, ShellError> {
+    let stream = async_stream! {
+        let values: Vec<Tagged<Value>> = input.values.collect().await;
+        let mut concat_string = String::new();
+        let mut latest_tag: Option<Tag> = None;
+        let split_at = match minimum_spaces {
+            Some(number) => number.item,
+            None => DEFAULT_MINIMUM_SPACES
+        };
+
+        for value in values {
+            let value_tag = value.tag();
+            latest_tag = Some(value_tag.clone());
+            match value.item {
+                Value::Primitive(Primitive::String(s)) => {
+                    concat_string.push_str(&s);
+                }
+                _ => yield Err(ShellError::labeled_error_with_secondary (
+                    "Expected a string from pipeline",
+                    "requires string input",
+                    &name,
+                    "value originates from here",
+                    &value_tag
+                )),
+            }
+        }
+
+        match from_ssv_string_to_value(&concat_string, headerless, aligned_columns, split_at, name.clone()) {
+            Some(x) => match x {
+                Tagged { item: Value::Table(list), ..} => {
+                    for l in list { yield ReturnSuccess::value(l) }
+                }
+                x => yield ReturnSuccess::value(x)
+            },
+            None => if let Some(tag) = latest_tag {
+                yield Err(ShellError::labeled_error_with_secondary(
+                    "Could not parse as SSV",
+                    "input cannot be parsed ssv",
+                    &name,
+                    "value originates from here",
+                    &tag,
+                ))
+            },
+        }
+    };
+
+    Ok(stream.to_output_stream())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    fn owned(x: &str, y: &str) -> (String, String) {
+        (String::from(x), String::from(y))
+    }
+
+    #[test]
+    fn it_trims_empty_and_whitespace_only_lines() {
+        let input = r#"
+
+            a       b
+
+            1       2
+
+            3       4
+        "#;
+        let result = string_to_table(input, false, true, 1);
+        assert_eq!(
+            result,
+            Some(vec![
+                vec![owned("a", "1"), owned("b", "2")],
+                vec![owned("a", "3"), owned("b", "4")]
+            ])
+        );
+    }
+
+    #[test]
+    fn it_deals_with_single_column_input() {
+        let input = r#"
+            a
+            1
+            2
+        "#;
+        let result = string_to_table(input, false, true, 1);
+        assert_eq!(
+            result,
+            Some(vec![vec![owned("a", "1")], vec![owned("a", "2")]])
+        );
+    }
+
+    #[test]
+    fn it_ignores_headers_when_headerless() {
+        let input = r#"
+            a b
+            1 2
+            3 4
+        "#;
+        let result = string_to_table(input, true, true, 1);
+        assert_eq!(
+            result,
+            Some(vec![
+                vec![owned("Column1", "1"), owned("Column2", "2")],
+                vec![owned("Column1", "3"), owned("Column2", "4")]
+            ])
+        );
+    }
+
+    #[test]
+    fn it_returns_none_given_an_empty_string() {
+        let input = "";
+        let result = string_to_table(input, true, true, 1);
+        assert!(result.is_none());
+    }
+
+    #[test]
+    fn it_allows_a_predefined_number_of_spaces() {
+        let input = r#"
+            column a   column b
+            entry 1    entry number  2
+            3          four
+        "#;
+
+        let result = string_to_table(input, false, true, 3);
+        assert_eq!(
+            result,
+            Some(vec![
+                vec![
+                    owned("column a", "entry 1"),
+                    owned("column b", "entry number  2")
+                ],
+                vec![owned("column a", "3"), owned("column b", "four")]
+            ])
+        );
+    }
+
+    #[test]
+    fn it_trims_remaining_separator_space() {
+        let input = r#"
+            colA   colB     colC
+            val1   val2     val3
+        "#;
+
+        let trimmed = |s: &str| s.trim() == s;
+
+        let result = string_to_table(input, false, true, 2).unwrap();
+        assert!(result
+            .iter()
+            .all(|row| row.iter().all(|(a, b)| trimmed(a) && trimmed(b))))
+    }
+
+    #[test]
+    fn it_keeps_empty_columns() {
+        let input = r#"
+            colA   col B     col C
+                   val2      val3
+            val4   val 5     val 6
+            val7             val8
+        "#;
+
+        let result = string_to_table(input, false, true, 2).unwrap();
+        assert_eq!(
+            result,
+            vec![
+                vec![
+                    owned("colA", ""),
+                    owned("col B", "val2"),
+                    owned("col C", "val3")
+                ],
+                vec![
+                    owned("colA", "val4"),
+                    owned("col B", "val 5"),
+                    owned("col C", "val 6")
+                ],
+                vec![
+                    owned("colA", "val7"),
+                    owned("col B", ""),
+                    owned("col C", "val8")
+                ],
+            ]
+        )
+    }
+
+    #[test]
+    fn it_uses_the_full_final_column() {
+        let input = r#"
+            colA   col B
+            val1   val2   trailing value that should be included
+        "#;
+
+        let result = string_to_table(input, false, true, 2).unwrap();
+        assert_eq!(
+            result,
+            vec![vec![
+                owned("colA", "val1"),
+                owned("col B", "val2   trailing value that should be included"),
+            ],]
+        )
+    }
+}