[PATCH 8/8] stash: use git checkout --no-overlay

[Thomas Gummerer <t.gummerer@gmail.com>]

Now that we have 'git checkout --no-overlay', we can use it in git
stash, making the codepaths for 'git stash push' with and without
pathspec more similar, and thus easier to follow.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
---

As mentioned in the cover letter, not sure if we want to apply this
now.  There are two reasons I did this:
- Showing the new functionality of git checkout
- Increased test coverage, as we are running the new code with all git
  stash tests for free, which helped look at some cases that I was
  missing initially.

 git-stash.sh | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/git-stash.sh b/git-stash.sh
index 94793c1a91..67be04d996 100755
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -314,19 +314,15 @@ push_stash () {
 
 	if test -z "$patch_mode"
 	then
-		test "$untracked" = "all" && CLEAN_X_OPTION=-x || CLEAN_X_OPTION=
-		if test -n "$untracked" && test $# = 0
+		test "$untracked" = "all" && CLEAN_X_OPTION=-X || CLEAN_X_OPTION=
+		if test -n "$untracked"
 		then
-			git clean --force --quiet -d $CLEAN_X_OPTION
+			git clean --force --quiet -d $CLEAN_X_OPTION -- "$@"
 		fi
 
 		if test $# != 0
 		then
-			test -z "$untracked" && UPDATE_OPTION="-u" || UPDATE_OPTION=
-			test "$untracked" = "all" && FORCE_OPTION="--force" || FORCE_OPTION=
-			git add $UPDATE_OPTION $FORCE_OPTION -- "$@"
-			git diff-index -p --cached --binary HEAD -- "$@" |
-			git apply --index -R
+			git checkout --quiet --no-overlay --ignore-unmatched HEAD -- "$@"
 		else
 			git reset --hard -q
 		fi
-- 
2.20.0.405.gbc1bbc6f85