builtin-diff: fix comparison between two blobs.

The code forgot that setup_revisions() leaves parsed object
names in reverse in the list.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/builtin-diff.c b/builtin-diff.c
index d3ac581..b0c9cad 100644 (file)
--- a/builtin-diff.c
+++ b/builtin-diff.c
@@ -132,7 +132,9 @@ static int builtin_diff_blobs(struct rev_info *revs,
                              int argc, const char **argv,
                              struct blobinfo *blob)
 {
-       /* Blobs */
+       /* Blobs: the arguments are reversed when setup_revisions()
+        * picked them up.
+        */
        unsigned mode = canon_mode(S_IFREG | 0644);
 
        while (1 < argc) {
@@ -145,8 +147,8 @@ static int builtin_diff_blobs(struct rev_info *revs,
        }
        stuff_change(&revs->diffopt,
                     mode, mode,
-                    blob[0].sha1, blob[1].sha1,
-                    blob[1].name, blob[1].name);
+                    blob[1].sha1, blob[0].sha1,
+                    blob[0].name, blob[0].name);
        diffcore_std(&revs->diffopt);
        diff_flush(&revs->diffopt);
        return 0;