Previously, we used rustyline's filename completer. This allowed us to make
progress on the completion engine without building all the parts at once. We now
need our own filename completer to make progress.
The primary driver to having our own filename completer is that it can better
integrate with our path constructs. For example, if we have
> ls .../<TAB>
we want to show a list of suggestions that includes all files two directories up
from the current working directory. The least jarring experience to a user would
be to maintain the three dots. The easiest way for us to do this is by building
our own completer and path constructs.
* Show directories and executable for command completion.
Previously we chose from two sets for completing the command position:
1. internal commands, and
2. executables relative to the PATH environment variable.
We now also show directories/executables that match the relative/absolute path
that has been partially typed.
* Fix for Windows
The parser sees this as a positional argument, but when requesting completions
this could be either a filename that starts with a hyphen, or it could be a
flag. This expands the completion engine's interface to return a vec of possible
completion locations instead of an optional one, because we want to show all
possibilities instead of assuming one or the either.
The completion engine maps completion locations to spans on a line, which
indicate whther to complete a command name, flag name, argument, and so on.
Initial implementation is simplistic, with some rough edges, since it relies
heavily on the parser's interpretation. For example
du -
if asking for completions, `-` is considered a positional argument by the
parser, but the user is likely looking for a flag. These scenarios will be
addressed in a series of progressive enhancements to the engine.
- Removing old code for dealing with escaping, since that has moved elsewhere.
- Eliminating some match statements in favour of result/option methods.
- Fix an issue where completing inside quotes could remove the quote at the
beginning, if one already existed on the line but the replacement didn't have
a quote at the beginning.
* Refactor all completion logic into `NuCompleter`
This is the next step to improving completions. Previously, completion logic was
scattered about (`FilesystemShell`, `NuCompleter`, `Helper`, and `ShellManager`).
By unifying the core logic into a central location, it will be easier to take the
next steps in improving completion.
* Update context.rs
Co-authored-by: Jonathan Turner <jonathandturner@users.noreply.github.com>
* Working towards a PoC for wasm
* Move bson and sqlite to plugins
* proof of concept now working
* tests are green
* Add CI test for --no-default-features
* Fix some tests
* Fix clippy and windows build
* More fixes
* Fix the windows build
* Fix the windows test
* Making Commands match what UntaggedValue needs
* WIP
* WIP
* WIP
* Moved to expressions for conditions
* Add 'each' command to use command blocks
* More cleanup
* Add test for 'each'
* Instead use an expression block
This improves incremental build time when working on what was previously
the root package. For example, previously all plugins would be rebuilt
with a change to `src/commands/classified/external.rs`, but now only
`nu-cli` will have to be rebuilt (and anything that depends on it).
