Fix "git-diff-script A B"

[git.git] / git-diff-script

diff --git a/git-diff-script b/git-diff-script
index 03ed555..99ff264 100755 (executable)
--- a/git-diff-script
+++ b/git-diff-script
@@ -1,7 +1,5 @@
 #!/bin/sh
-. git-sh-setup-script || die "Not a git archive"
-
-rev=($(git-rev-parse --revs-only "$@"))
+rev=($(git-rev-parse --revs-only "$@")) || exit
 flags=($(git-rev-parse --no-revs --flags "$@"))
 files=($(git-rev-parse --no-revs --no-flags "$@"))
 case "${#rev[*]}" in
@@ -10,8 +8,14 @@ case "${#rev[*]}" in
 1)
        git-diff-cache -M -p "$@";;
 2)
-       begin=$(echo "${rev[1]}" | tr -d '^')
-       end="${rev[0]}"
+       case "${rev[1]}" in
+       ^?*)
+               begin=$(echo "${rev[1]}" | tr -d '^')
+               end="${rev[0]}" ;;
+       *)
+               begin="${rev[0]}"
+               end="${rev[1]}" ;;
+       esac
        git-diff-tree -M -p $flags $begin $end $files;;
 *)
        echo "I don't understand"