Make push more verbose about illegal combination of options

It may be unclear that --all, --mirror, --tags and/or explicit refspecs
are illegal combinations for git push.

Git was silently failing in these cases, while we can complaint more
properly about it.

Signed-off-by: Marek Zawirski <marek.zawirski@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-push.c b/builtin-push.c
index c1ed68d938f67343c6938cfef54d5ff69a522a63..cc6666f75e7db8a546d4a1589335589190e414fe 100644 (file)
--- a/builtin-push.c
+++ b/builtin-push.c
@@ -59,8 +59,17 @@ static int do_push(const char *repo, int flags)
        if (remote->mirror)
                flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);
 
-       if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) && refspec)
-               return -1;
+       if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
+               if (!strcmp(*refspec, "refs/tags/*"))
+                       return error("--all and --tags are incompatible");
+               return error("--all can't be combined with refspecs");
+       }
+
+       if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
+               if (!strcmp(*refspec, "refs/tags/*"))
+                       return error("--mirror and --tags are incompatible");
+               return error("--mirror can't be combined with refspecs");
+       }
 
        if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
                                (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {