a2873336bb
Recommend holding until after #13125 is fully digested and *possibly* until 0.96. # Description Fixes one of the issues described in #13125 The `do` signature included a `SyntaxShape:Any` as one of the possible first-positional types. This is incorrect. `do` only takes a closure as a positional. This had the result of: 1. Moving what should have been a parser error to evaluation-time ## Before ```nu > do 1 Error: nu:🐚:cant_convert × Can't convert to Closure. ╭─[entry #26:1:4] 1 │ do 1 · ┬ · ╰── can't convert int to Closure ╰──── ``` ## After ```nu > do 1 Error: nu::parser::parse_mismatch × Parse mismatch during operation. ╭─[entry #5:1:4] 1 │ do 1 · ┬ · ╰── expected block, closure or record ╰──── ``` 2. Masking a bad test in `std assert` This is a bit convoluted, but `std assert` tests included testing `assert error` to make sure it: * Asserts on bad code * Doesn't assert on good code The good-code test was broken, and was essentially bad-code (really bad-code) that wasn't getting caught due to the bad signature. Fixing this resulted in *parse time* failures on every call to `test_asserts` (not something that particular test was designed to handle. This PR also fixes the test case to properly evaluate `std assert error` against a good code path. # User-Facing Changes * Error-type returned (possible breaking change?) # Tests + Formatting - 🟢 `toolkit fmt` - 🟢 `toolkit clippy` - 🟢 `toolkit test` - 🟢 `toolkit test stdlib` # After Submitting N/A |
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nu-cmd-lang
the base language and command crate of nu
The commands in this crate are the core commands of the nu language. It is also the base crate upon which all other command crates sit on top of including:
- nu-command
- nu-cli
- nu-cmd-extra
As time goes on and the nu language develops further in parallel with nushell we will be adding other command crates to the system.
What does it mean to be a base crate ?
A base crate is one with minimal dependencies in our system so that other developers can come along and use this crate without having a lot of baggage in terms of other crates which will bloat their underlying application.
Background on nu-cmd-lang
This crate was designed to be a small, concise set of tools or commands that serve as the foundation layer of both nu and nushell. These are the core commands needed to have a nice working version of the nu language without all of the support that the other commands provide inside nushell. Prior to the launch of this crate all of our commands were housed in the crate nu-command. Moving forward we would like to slowly break out the commands in nu-command into different crates; the naming and how this will work and where all the commands will be located is a "work in progress" especially now that the standard library is starting to become more popular as a location for commands. As time goes on some of our commands written in rust will be migrated to nu and when this happens they will be moved into the standard library.