[gentoo-dev] updated emerge bash completion + question

[Geert Bevin <gbevin@theleaf.be>]

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Hi all,

here is a slightly updated emerge bash completion which also completes
the arguments now and adds 'update' and 'system' to the completions.

I have one problem though. emerge --usepkg should complete on files.
Normally a command that completes on files is defined with 'complete -f
command'. The bash info says that the 'comspec' builtin which is used to
generate completion matches generates those matches in the same way as
'complete', however when using 'comspec -f' the filename completion
stops after one path element and doesn't continue until a file has been
reached. Does someone know how to work around this?

Geert.

-- 
Geert Bevin
the Leaf sprl/bvba
"Use what you need"           Pierre Theunisstraat 1/47
http://www.theleaf.be         1030 Brussels
gbevin@theleaf.be             Tel & Fax +32 2 241 19 98

[-- Attachment #2: emerge.completion --]
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# Gentoo emerge completion.
#
_emerge()
{
	local cur prev grepcmd sedcmd systemactions setsma setbig

	COMPREPLY=()
	cur=${COMP_WORDS[COMP_CWORD]}
	prev=${COMP_WORDS[COMP_CWORD-1]}

	if [ $COMP_CWORD -eq 1 ] && [[ "$cur" == -* ]]; then
		COMPREPLY=( $( compgen -W '--pretend \
			--autoclean \
			--usepkg \
			--buildpkg' | grep ^$cur ) )
	elif [ "$prev" == "--usepkg" ]; then
		COMPREPLY=( $( compgen -f $cur ) )
	else
		cd /usr/portage
		grepcmd="grep -E ^$cur.*"
		sedcmd="sed -e /CVS/d \
						-e /BUGS-TODO/d \
						-e /ChangeLog.*/d \
						-e /header.txt/d \
						-e /skel.build/d \
						-e /distfiles/d \
						-e /eclass/d \
						-e /files/d \
						-e /incoming/d \
						-e /packages/d \
						-e /profiles/d \
						-e /scripts/d"
		systemactions=$'\n'"system"$'\n'"upgrade"
		setsma="`compgen -S '/' -G "*" | $sedcmd`"$systemactions
		setbig="`compgen -G "*/*" | $sedcmd`"$systemactions
		if [ $cur ]; then
			if [ `echo $cur | grep '/'` ]; then
				COMPREPLY=( $( echo "$setbig" | $grepcmd ) )
			else
				if [ `echo "$setsma" | $grepcmd | grep '/' | wc -l` = 1 ]; then
					COMPREPLY=( $( echo "$setbig" | $grepcmd ) )
				else
					COMPREPLY=( $( echo "$setsma" | $grepcmd ) )
				fi
			fi
			else
			COMPREPLY=( $( echo "$setsma" ) )
		fi
	fi
		
	return 0
}
complete -F _emerge emerge