push: allow pushing new branches with --force-with-lease

If there is no upstream information for a branch, it is likely that it is newly created and can safely be pushed under the normal fast-forward rules. Relax the --force-with-lease check so that we do not reject these branches immediately but rather attempt to push them as new branches, using the null SHA-1 as the expected value. In fact, it is already possible to push new branches using the explicit --force-with-lease=<branch>:<expect> syntax, so all we do here is make this behaviour the default if no explicit "expect" value is specified. Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>

John Keeping committed Jul 26, 2016 at 21:44 UTC 64ac39af7020f3a8bc52d51137804ce9f46baf66
3 files changed +15 -5
remote.c
+3 -4
@@ -1554,8 +1554,7 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
1554 * branch.
1555 */
1556 if (ref->expect_old_sha1) {
1557 - if (ref->expect_old_no_trackback ||
1558 - oidcmp(&ref->old_oid, &ref->old_oid_expect))
1557 + if (oidcmp(&ref->old_oid, &ref->old_oid_expect))
1558 reject_reason = REF_STATUS_REJECT_STALE;
1559 else
1560 /* If the ref isn't stale then force the update. */
@@ -2355,7 +2354,7 @@ static void apply_cas(struct push_cas_option *cas,
2354 if (!entry->use_tracking)
2355 hashcpy(ref->old_oid_expect.hash, cas->entry[i].expect);
2356 else if (remote_tracking(remote, ref->name, &ref->old_oid_expect))
2358 - ref->expect_old_no_trackback = 1;
2357 + oidclr(&ref->old_oid_expect);
2358 return;
2359 }
2360
@@ -2365,7 +2364,7 @@ static void apply_cas(struct push_cas_option *cas,
2364
2365 ref->expect_old_sha1 = 1;
2366 if (remote_tracking(remote, ref->name, &ref->old_oid_expect))
2368 - ref->expect_old_no_trackback = 1;
2367 + oidclr(&ref->old_oid_expect);
2368 }
2369
2370 void apply_push_cas(struct push_cas_option *cas,
remote.h
-1
@@ -87,7 +87,6 @@ struct ref {
87 force:1,
88 forced_update:1,
89 expect_old_sha1:1,
90 - expect_old_no_trackback:1,
90 deletion:1,
91 matched:1;
92
t/t5533-push-cas.sh
+12
@@ -191,6 +191,18 @@ test_expect_success 'cover everything with default force-with-lease (allowed)' '
191 test_cmp expect actual
192 '
193
194 +test_expect_success 'new branch covered by force-with-lease' '
195 + setup_srcdst_basic &&
196 + (
197 + cd dst &&
198 + git branch branch master &&
199 + git push --force-with-lease=branch origin branch
200 + ) &&
201 + git ls-remote dst refs/heads/branch >expect &&
202 + git ls-remote src refs/heads/branch >actual &&
203 + test_cmp expect actual
204 +'
205 +
206 test_expect_success 'new branch covered by force-with-lease (explicit)' '
207 setup_srcdst_basic &&
208 (