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git/git-grep.sh
Junio C Hamano 5b2bcc7b2d git-grep: clarification on parameters.
We forgot to make sure that there is no more than one pattern
parameter.  Also when looking for files in a directory called
'--others', it passed that path limiter without preceding the
end-of-options marker '--' to underlying git-ls-files, which
misunderstood it as one of its options instead.

	$ git grep --others -e Meta/Make Meta
	$ git grep -o -e Meta/Make Meta
	$ git grep -o Meta/Make Meta

look for a string "Meta/Make" from untracked files in Meta/
directory.

	$ git grep Meta/Make --others

looks for the same string from tracked files in ./--others
directory.

On the other hand,

	$ git grep -e Meta/Make --others

does not have a freestanding pattern, so everybody is parameter
and there is no path specifier.  It looks for the string in all
the untracked files without any path limiter.

[jc: updated with usability enhancements and documentation
cleanups from Sean.]

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-01-21 19:34:11 -08:00

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#!/bin/sh
#
# Copyright (c) Linus Torvalds, 2005
#
USAGE='[<option>...] [-e] <pattern> [<path>...]'
SUBDIRECTORY_OK='Yes'
. git-sh-setup
got_pattern () {
if [ -z "$no_more_patterns" ]
then
pattern="$1" no_more_patterns=yes
else
die "git-grep: do not specify more than one pattern"
fi
}
no_more_patterns=
pattern=
flags=()
git_flags=()
while : ; do
case "$1" in
-o|--cached|--deleted|--others|--killed|\
--ignored|--modified|--exclude=*|\
--exclude-from=*|\--exclude-per-directory=*)
git_flags=("${git_flags[@]}" "$1")
;;
-e)
got_pattern "$2"
shift
;;
-A|-B|-C|-D|-d|-f|-m)
flags=("${flags[@]}" "$1" "$2")
shift
;;
--)
# The rest are git-ls-files paths
shift
break
;;
-*)
flags=("${flags[@]}" "$1")
;;
*)
if [ -z "$no_more_patterns" ]
then
got_pattern "$1"
shift
fi
[ "$1" = -- ] && shift
break
;;
esac
shift
done
[ "$pattern" ] || {
usage
}
git-ls-files -z "${git_flags[@]}" -- "$@" |
xargs -0 grep "${flags[@]}" -e "$pattern" --