git-send-pack: fix --all option when used with directory

When using git send-pack with --all option
and a target repository specification ([<host>:]<directory>),
usage message is being displayed instead of performing
the actual transmission.

The reason for this issue is that destination and refspecs are being set
in the same conditional and are populated from argv. When a target
repository is passed, refspecs is being populated as well with its value.
This makes the check for refspecs not being NULL to always return true,
which, in conjunction with the check for --all or --mirror options,
is always true as well and returns usage message instead of proceeding.

This ensures that send-pack will stop execution only when --all
or --mirror switch is used in conjunction with any refspecs passed.

Signed-off-by: Stanislav Kolotinskiy <stanislav@assembla.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/send-pack.c

@@ -225,7 +225,7 @@ int cmd_send_pack(int argc, const char **argv, const char *prefix)
 	 * --all and --mirror are incompatible; neither makes sense
 	 * with any refspecs.
 	 */
-	if ((refspecs && (send_all || args.send_mirror)) ||
+	if ((nr_refspecs > 0 && (send_all || args.send_mirror)) ||
 	    (send_all && args.send_mirror))
 		usage_with_options(send_pack_usage, options);
 

t/t5400-send-pack.sh

@@ -128,6 +128,18 @@ test_expect_success 'denyNonFastforwards trumps --force' '
 	test "$victim_orig" = "$victim_head"
 '
 
+test_expect_success 'send-pack --all sends all branches' '
+	# make sure we have at least 2 branches with different
+	# values, just to be thorough
+	git branch other-branch HEAD^ &&
+
+	git init --bare all.git &&
+	git send-pack --all all.git &&
+	git for-each-ref refs/heads >expect &&
+	git -C all.git for-each-ref refs/heads >actual &&
+	test_cmp expect actual
+'
+
 test_expect_success 'push --all excludes remote-tracking hierarchy' '
 	mkdir parent &&
 	(