Proposal positional arguments support in just for shell like nushell etc.

[vincent-herlemont]

Related issues:

• positional-arguments does not work with set shell? #1559
• PowerShell Core #1554
• pwsh does not support -Command positionals, is incompatible with intended set shell and positional-arguments usage #1592

I am currently integrating just with nushell, and I'm experiencing a roadblock with the handling of positional arguments. As of now, it appears that nushell lacks support for this functionality.

Here is a snippet of my current Justfile:

set shell := ["nu", "-c"]

test_command *args='':
    echo $1

Regrettably, this format isn't compatible with nushell. I am proposing a feature where we could retrieve positional arguments similar to how it's done in bash or other traditional shells. The idea is to use a syntax (Variables and Substitution) like {{1}}, {{2}}, etc. to represent positional arguments equivalent to $1, $2, etc.

A proposed usage might look like:

set shell := ["nu", "-c"]

test_command *args='':
    echo {{1}}

This implementation would greatly aid those of us utilizing just in conjunction with nushell and maybe others. Tell me your opinion on this proposal? Maybe I could try my hand at an MR.

[casey]

This should work if you add set positional-arguments, which causes positional arguments to be passed to each command

set positional-arguments
set shell := ["nu", "-c"]

foo *args='':
    echo $1

Please feel free to reopen if that doesn't work!