Add support for autocomplete behind shim (like asdf)

[kedare]

Description

When using scw behind a version managed using shims like ASDF, the autocomplete doesn't work as it is generating the full path in the generated autocompletion code (even the scw shim is in PATH)

$ scw autocomplete script
autoload -U compinit && compinit
_/home/mpoussin/.asdf/installs/scaleway-cli/2.3.1/bin/scw () {
        output=($(/home/mpoussin/.asdf/installs/scaleway-cli/2.3.1/bin/scw autocomplete complete zsh -- ${CURRENT} ${words}))
        opts=('-S' ' ')
        if [[ $output == *= ]]; then
                opts=('-S' '')
        fi
        compadd "${opts[@]}" -- "${output[@]}"
}
compdef _/home/mpoussin/.asdf/installs/scaleway-cli/2.3.1/bin/scw /home/mpoussin/.asdf/installs/scaleway-cli/2.3.1/bin/scw

It would be interesting to have a --parameter to force the basename to scw (or configurable)

How this functionality would be exposed

A new parameter --basename for example to force a basename on the autocompletion generated code

References

https://github.com/asdf-vm/asdf
https://github.com/webofmars/asdf-plugin-scaleway-cli

Version

Version 2.3.1
BuildDate 2021-06-08T11:54:02
GoVersion go1.16.4
GitBranch new-release
GitCommit 07dbaeb
GoArch amd64
GoOS linux

[ftoral]

Hi,

I will +1 on that issue, because i face the problem with Homebrew (scw formulae).
The autocomplete code generated by the formulae is based on the scw autocomplete script command, but is relative to the brew installation. Consequently and despite the scw is on the $PATH the autocomplete do not work.

brew upgrade scw
==> Upgrading 1 outdated package:
scw 2.10.0 -> 2.11.1
[...]
==> scw
Bash completion has been installed to:
  /home/linuxbrew/.linuxbrew/etc/bash_completion.d
$ cat /home/linuxbrew/.linuxbrew/etc/bash_completion.d/scw 
_/home/linuxbrew/.linuxbrew/Cellar/scw/2.11.1/bin/scw() {
	_get_comp_words_by_ref -n = cword words

	output=$(/home/linuxbrew/.linuxbrew/Cellar/scw/2.11.1/bin/scw autocomplete complete bash -- "$COMP_LINE" "$cword" "${words[@]}")
	COMPREPLY=($output)
	# apply compopt option and ignore failure for older bash versions
	[[ $COMPREPLY == *= ]] && compopt -o nospace 2> /dev/null || true
	return
}
complete -F _/home/linuxbrew/.linuxbrew/Cellar/scw/2.11.1/bin/scw /home/linuxbrew/.linuxbrew/Cellar/scw/2.11.1/bin/scw

The current workaround is to change the brew generated script with

sed -i -E 's#(_?)\/([^ \n]*)scw#\1scw#g' $(brew --prefix)/etc/bash_completion.d/scw
source $(brew --prefix)/etc/bash_completion.d/scw

For reference the line in the scw Homebrew formulae : Formula/scw.rb#L23