rebase: give a better error message for bogus branch

When you give a non-existent branch to git-rebase, it spits
out the usage. This can be confusing, since you may
understand the usage just fine, but simply have made a
mistake in the branch name.

Before:

  $ git rebase origin bogus
  Usage: git rebase ...

After:

  $ git rebase origin bogus
  fatal: no such branch: bogus
  Usage: git rebase ...

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-rebase.sh b/git-rebase.sh
index 1f42fb75e74fde6e7fba8b7694b227700417c0c3..26d5197a0fb627eb6991910c229eacbf9b190638 100755 (executable)
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -491,6 +491,7 @@ case "$#" in
        then
                head_name="detached HEAD"
        else
+               echo >&2 "fatal: no such branch: $1"
                usage
        fi
        ;;