diff: return 1 when skipping directories with -r, but without -N

Diff in diffutils will return 1 in case -r option is specified without
-N something exists only in one of the directories.

Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/editors/diff.c b/editors/diff.c
index cc7ba472e..ca4a4eae7 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -794,7 +794,9 @@ static int FAST_FUNC skip_dir(const char *filename,
                         free(othername);
                         if (r != 0 || !S_ISDIR(osb.st_mode)) {
                                 /* other dir doesn't have similarly named
-                                 * directory, don't recurse */
+                                 * directory, don't recurse; return 1 upon
+                                 * exit, just like diffutils' diff */
+                                exit_status |= 1;
                                 return SKIP;
                         }
                 }
@@ -846,9 +848,10 @@ static void diffdir(char *p[2], const char *s_start)
                         break;
                 pos = !dp[0] ? 1 : (!dp[1] ? -1 : strcmp(dp[0], dp[1]));
                 k = pos > 0;
-                if (pos && !(option_mask32 & FLAG(N)))
+                if (pos && !(option_mask32 & FLAG(N))) {
                         printf("Only in %s: %s\n", p[k], dp[k]);
-                else {
+                        exit_status |= 1;
+                } else {
                         char *fullpath[2], *path[2]; /* if -N */
 
                         for (i = 0; i < 2; i++) {