cmp: with -s, do not report open errors

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

diff --git a/editors/cmp.c b/editors/cmp.c
index f495da7d2501af0656a71cdf7f08c4da86a1cc0a..f84a56e3e64aa4ed30e7dfd1cf3e298f28071969 100644 (file)
--- a/editors/cmp.c
+++ b/editors/cmp.c
@@ -33,8 +33,6 @@ int cmp_main(int argc UNUSED_PARAM, char **argv)
        unsigned opt;
        int retval = 0;
 
-       xfunc_error_retval = 2; /* 1 is returned if files are different. */
-
        opt_complementary = "-1"
                        IF_DESKTOP(":?4")
                        IF_NOT_DESKTOP(":?2")
@@ -43,8 +41,6 @@ int cmp_main(int argc UNUSED_PARAM, char **argv)
        argv += optind;
 
        filename1 = *argv;
-       fp1 = xfopen_stdin(filename1);
-
        if (*++argv) {
                filename2 = *argv;
                if (ENABLE_DESKTOP && *++argv) {
@@ -55,6 +51,10 @@ int cmp_main(int argc UNUSED_PARAM, char **argv)
                }
        }
 
+       xfunc_error_retval = 2;  /* missing file results in exitcode 2 */
+       if (opt & CMP_OPT_s)
+               logmode = 0;  /* -s suppresses open error messages */
+       fp1 = xfopen_stdin(filename1);
        fp2 = xfopen_stdin(filename2);
        if (fp1 == fp2) {               /* Paranoia check... stdin == stdin? */
                /* Note that we don't bother reading stdin.  Neither does gnu wc.
@@ -63,6 +63,7 @@ int cmp_main(int argc UNUSED_PARAM, char **argv)
                 */
                return 0;
        }
+       logmode = LOGMODE_STDIO;
 
        if (opt & CMP_OPT_l)
                fmt = fmt_l_opt;