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Related: - #15683 - #14551 - #849 - #12701 - #11527 # Description Currently various commands have differing behavior regarding cell-paths ```nushell {a: 1, A: 2} | get a A # => ╭───┬───╮ # => │ 0 │ 2 │ # => │ 1 │ 2 │ # => ╰───┴───╯ {a: 1, A: 2} | select a A # => ╭───┬───╮ # => │ a │ 1 │ # => │ A │ 2 │ # => ╰───┴───╯ {A: 1} | update a 2 # => Error: nu:🐚:column_not_found # => # => × Cannot find column 'a' # => ╭─[entry #62:1:1] # => 1 │ {A: 1} | update a 2 # => · ───┬── ┬ # => · │ ╰── cannot find column 'a' # => · ╰── value originates here # => ╰──── ``` Proposal: making cell-path access case-sensitive by default and adding new syntax for case-insensitive parts, similar to optional (?) parts. ```nushell {FOO: BAR}.foo # => Error: nu:🐚:name_not_found # => # => × Name not found # => ╭─[entry #60:1:21] # => 1 │ {FOO: BAR}.foo # => · ─┬─ # => · ╰── did you mean 'FOO'? # => ╰──── {FOO: BAR}.foo! # => BAR ``` This would solve the problem of case sensitivity for all commands without causing an explosion of flags _and_ make it more granular Assigning to a field using a case-insensitive path is case-preserving. ```nushell mut val = {FOO: "I'm FOO"}; $val # => ╭─────┬─────────╮ # => │ FOO │ I'm FOO │ # => ╰─────┴─────────╯ $val.foo! = "I'm still FOO"; $val # => ╭─────┬───────────────╮ # => │ FOO │ I'm still FOO │ # => ╰─────┴───────────────╯ ``` For `update`, case-insensitive is case-preserving. ```nushell {FOO: 1} | update foo! { $in + 1 } # => ╭─────┬───╮ # => │ FOO │ 2 │ # => ╰─────┴───╯ ``` `insert` can insert values into nested values so accessing into existing columns is case-insensitive, but creating new columns uses the cell-path as it is. So `insert foo! ...` and `insert FOO! ...` would work exactly as they do without `!` ```nushell {FOO: {quox: 0}} # => ╭─────┬──────────────╮ # => │ │ ╭──────┬───╮ │ # => │ FOO │ │ quox │ 0 │ │ # => │ │ ╰──────┴───╯ │ # => ╰─────┴──────────────╯ {FOO: {quox: 0}} | insert foo.bar 1 # => ╭─────┬──────────────╮ # => │ │ ╭──────┬───╮ │ # => │ FOO │ │ quox │ 0 │ │ # => │ │ ╰──────┴───╯ │ # => │ │ ╭─────┬───╮ │ # => │ foo │ │ bar │ 1 │ │ # => │ │ ╰─────┴───╯ │ # => ╰─────┴──────────────╯ {FOO: {quox: 0}} | insert foo!.bar 1 # => ╭─────┬──────────────╮ # => │ │ ╭──────┬───╮ │ # => │ FOO │ │ quox │ 0 │ │ # => │ │ │ bar │ 1 │ │ # => │ │ ╰──────┴───╯ │ # => ╰─────┴──────────────╯ ``` `upsert` is tricky, depending on the input, the data might end up with different column names in rows. We can either forbid case-insensitive cell-paths for `upsert` or trust the user to keep their data in a sensible shape. This would be a breaking change as it would make existing cell-path accesses case-sensitive, however the case-sensitivity is already inconsistent and any attempt at making it consistent would be a breaking change. > What about `$env`? 1. Initially special case it so it keeps its current behavior. 2. Accessing environment variables with non-matching paths gives a deprecation warning urging users to either use exact casing or use the new explicit case-sensitivity syntax 3. Eventuall remove `$env`'s special case, making `$env` accesses case-sensitive by default as well. > `$env.ENV_CONVERSIONS`? In addition to `from_string` and `to_string` add an optional field to opt into case insensitive/preserving behavior. # User-Facing Changes - `get`, `where` and other previously case-insensitive commands are now case-sensitive by default. - `get`'s `--sensitive` flag removed, similar to `--ignore-errors` there is now an `--ignore-case` flag that treats all parts of the cell-path as case-insensitive. - Users can explicitly choose the case case-sensitivity of cell-path accesses or commands. # Tests + Formatting Existing tests required minimal modification. ***However, new tests are not yet added***. - 🟢 toolkit fmt - 🟢 toolkit clippy - 🟢 toolkit test - 🟢 toolkit test stdlib # After Submitting - Update the website to include the new syntax - Update [tree-sitter-nu](https://github.com/nushell/tree-sitter-nu) --------- Co-authored-by: Bahex <17417311+Bahex@users.noreply.github.com> |
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Implementation of the Nushell language server.
See the Language Server Protocol specification
Internal Nushell crate
This crate implements components of Nushell and is not designed to support plugin authors or other users directly.