diff: tiny compat tweak

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/editors/diff.c b/editors/diff.c
index 00ecdd8c60055d0dc1cb1f006ba4226f18f30048..e3933e72424cc22ada27a9a76227e10e0431ac60 100644 (file)
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -1298,6 +1298,8 @@ int diff_main(int argc UNUSED_PARAM, char **argv)
         */
        f1 = argv[0];
        f2 = argv[1];
+       /* Compat: "diff file name_which_doesnt_exist" exits with 2 */
+       xfunc_error_retval = 2;
        if (LONE_DASH(f1)) {
                fstat(STDIN_FILENO, &stb1);
                gotstdin++;
@@ -1308,6 +1310,7 @@ int diff_main(int argc UNUSED_PARAM, char **argv)
                gotstdin++;
        } else
                xstat(f2, &stb2);
+       xfunc_error_retval = 1;
 
        if (gotstdin && (S_ISDIR(stb1.st_mode) || S_ISDIR(stb2.st_mode)))
                bb_error_msg_and_die("can't compare stdin to a directory");