Merge branch 'jk/fetch-reflog-df-conflict'

Corner-case bugfixes for "git fetch" around reflog handling.

* jk/fetch-reflog-df-conflict:
  ignore stale directories when checking reflog existence
  fetch: load all default config at startup

builtin/fetch.c

@@ -68,7 +68,7 @@ static int git_fetch_config(const char *k, const char *v, void *cb)
 		fetch_prune_config = git_config_bool(k, v);
 		return 0;
 	}
-	return 0;
+	return git_default_config(k, v, cb);
 }
 
 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)

refs.c

@@ -2962,10 +2962,10 @@ int log_ref_setup(const char *refname, char *logfile, int bufsize)
 
 	logfd = open(logfile, oflags, 0666);
 	if (logfd < 0) {
-		if (!(oflags & O_CREAT) && errno == ENOENT)
+		if (!(oflags & O_CREAT) && (errno == ENOENT || errno == EISDIR))
 			return 0;
 
-		if ((oflags & O_CREAT) && errno == EISDIR) {
+		if (errno == EISDIR) {
 			if (remove_empty_directories(logfile)) {
 				int save_errno = errno;
 				error("There are still logs under '%s'",

t/t1410-reflog.sh

@@ -253,4 +253,38 @@ test_expect_success 'checkout should not delete log for packed ref' '
 	test $(git reflog master | wc -l) = 4
 '
 
+test_expect_success 'stale dirs do not cause d/f conflicts (reflogs on)' '
+	test_when_finished "git branch -d a || git branch -d a/b" &&
+
+	git branch a/b master &&
+	echo "a/b@{0} branch: Created from master" >expect &&
+	git log -g --format="%gd %gs" a/b >actual &&
+	test_cmp expect actual &&
+	git branch -d a/b &&
+
+	# now logs/refs/heads/a is a stale directory, but
+	# we should move it out of the way to create "a" reflog
+	git branch a master &&
+	echo "a@{0} branch: Created from master" >expect &&
+	git log -g --format="%gd %gs" a >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'stale dirs do not cause d/f conflicts (reflogs off)' '
+	test_when_finished "git branch -d a || git branch -d a/b" &&
+
+	git branch a/b master &&
+	echo "a/b@{0} branch: Created from master" >expect &&
+	git log -g --format="%gd %gs" a/b >actual &&
+	test_cmp expect actual &&
+	git branch -d a/b &&
+
+	# same as before, but we only create a reflog for "a" if
+	# it already exists, which it does not
+	git -c core.logallrefupdates=false branch a master &&
+	: >expect &&
+	git log -g --format="%gd %gs" a >actual &&
+	test_cmp expect actual
+'
+
 test_done

t/t5516-fetch-push.sh

@@ -11,6 +11,7 @@ This test checks the following functionality:
 * hooks
 * --porcelain output format
 * hiderefs
+* reflogs
 '
 
 . ./test-lib.sh
@@ -1290,4 +1291,43 @@ test_expect_success 'pushing a tag pushes the tagged object' '
 	test_cmp expect actual
 '
 
+test_expect_success 'push into bare respects core.logallrefupdates' '
+	rm -rf dst.git &&
+	git init --bare dst.git &&
+	git -C dst.git config core.logallrefupdates true &&
+
+	# double push to test both with and without
+	# the actual pack transfer
+	git push dst.git master:one &&
+	echo "one@{0} push" >expect &&
+	git -C dst.git log -g --format="%gd %gs" one >actual &&
+	test_cmp expect actual &&
+
+	git push dst.git master:two &&
+	echo "two@{0} push" >expect &&
+	git -C dst.git log -g --format="%gd %gs" two >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'fetch into bare respects core.logallrefupdates' '
+	rm -rf dst.git &&
+	git init --bare dst.git &&
+	(
+		cd dst.git &&
+		git config core.logallrefupdates true &&
+
+		# as above, we double-fetch to test both
+		# with and without pack transfer
+		git fetch .. master:one &&
+		echo "one@{0} fetch .. master:one: storing head" >expect &&
+		git log -g --format="%gd %gs" one >actual &&
+		test_cmp expect actual &&
+
+		git fetch .. master:two &&
+		echo "two@{0} fetch .. master:two: storing head" >expect &&
+		git log -g --format="%gd %gs" two >actual &&
+		test_cmp expect actual
+	)
+'
+
 test_done