[bash completion] _az_python_argcomplete generates empty output in Git Bash

[mloskot]

1. Paste this function to Git Bash

   azure-cli/az.completion

   Lines 1 to 20 in f6ea6fc

   	_az_python_argcomplete() {
   	local IFS=$'\013'
   	local SUPPRESS_SPACE=0
   	if compopt +o nospace 2> /dev/null; then
   	SUPPRESS_SPACE=1
   	fi
   	COMPREPLY=( $(IFS="$IFS" \
   	COMP_LINE="$COMP_LINE" \
   	COMP_POINT="$COMP_POINT" \
   	COMP_TYPE="$COMP_TYPE" \
   	_ARGCOMPLETE_COMP_WORDBREAKS="$COMP_WORDBREAKS" \
   	_ARGCOMPLETE=1 \
   	_ARGCOMPLETE_SUPPRESS_SPACE=$SUPPRESS_SPACE \
   	"$1" 8>&1 9>&2 1>/dev/null 2>/dev/null) )
   	if [[ $? != 0 ]]; then
   	unset COMPREPLY
   	elif [[ $SUPPRESS_SPACE == 1 ]] && [[ "$COMPREPLY" =~ [=/:]$ ]]; then
   	compopt -o nospace
   	fi
   	}

2. Run _az_python_argcomplete "az"

3. Observe empty output

In other words, for some reasons, sourcing https://github.com/Azure/azure-cli/blob/f6ea6fcc834d5e448a1e5df9257f2d47e2a05b78/az.completion into Git Bash does not configure completion for az.

$ az version
Azure-cli    Azure-cli-core    Azure-cli-telemetry
-----------  ----------------  ---------------------
2.46.0       2.46.0            1.0.8

[yonzhan]

Thank you for opening this issue, we will look into it.

[yonzhan]

@bebound for awareness

[bebound]

This file is for Bash, not Git Bash.
File descriptor on windows is different from Linux.
https://github.com/kislyuk/argcomplete/tree/develop/contrib#git-bash-support

[mloskot]

I see. It would be helpful if there is a test for MSYS env included.