detached-stash: simplify git stash show

This commit refactors git stash show to make use of the assert_stash_like function.

git show now dies if the presented argument is non-stash-like.

Previous behaviour was to tolerate commits that were not even stash-like.

Previously, git stash show would accept stash-like arguments, but
only if there was a stash on the stack.

Now, git stash accepts stash-like arguments always and only fails
if no stash-like argument is specified and there is no stash stack.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-stash.sh b/git-stash.sh
index ff1edc918bbd9d014695a9a447059391483867de..7ce818bd1baecfb48447f862bb2654ccbd3cf2ff 100755 (executable)
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -210,19 +210,9 @@ list_stash () {
 }
 
 show_stash () {
-       have_stash || die 'No stash found'
-
-       flags=$(git rev-parse --no-revs --flags "$@")
-       if test -z "$flags"
-       then
-               flags=--stat
-       fi
-
-       w_commit=$(git rev-parse --quiet --verify --default $ref_stash "$@") &&
-       b_commit=$(git rev-parse --quiet --verify "$w_commit^") ||
-               die "'$*' is not a stash"
+       assert_stash_like "$@"
 
-       git diff $flags $b_commit $w_commit
+       git diff ${FLAGS:---stat} $b_commit $w_commit
 }
 
 #