transport-helper: improve push messages

If there's already a remote-helper tracking ref, we can fetch the SHA-1 to report proper push messages (as opposed to always reporting [new branch]). The remote-helper currently can specify the old SHA-1 to avoid this problem, but there's no point in forcing all remote-helpers to be aware of git commit ids; they should be able to be agnostic of them. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Felipe Contreras committed May 3, 2013 at 18:41 UTC b056620f6fe7f05834716109fa79e7880a11bc36
2 files changed +15
t/t5801-remote-helpers.sh
+14
@@ -166,4 +166,18 @@ test_expect_success 'push ref with existing object' '
166 compare_refs local dup server dup
167 '
168
169 +test_expect_success 'push messages' '
170 + (cd local &&
171 + git checkout -b new_branch master &&
172 + echo new >>file &&
173 + git commit -a -m new &&
174 + git push origin new_branch &&
175 + git fetch origin &&
176 + echo new >>file &&
177 + git commit -a -m new &&
178 + git push origin new_branch 2> msg &&
179 + ! grep "\[new branch\]" msg
180 + )
181 +'
182 +
183 test_done
transport-helper.c
+1
@@ -801,6 +801,7 @@ static int push_refs_with_export(struct transport *transport,
801 if (private && !get_sha1(private, sha1)) {
802 strbuf_addf(&buf, "^%s", private);
803 string_list_append(&revlist_args, strbuf_detach(&buf, NULL));
804 + hashcpy(ref->old_sha1, sha1);
805 }
806 free(private);
807