gitweb: Make config_to_multi return [] instead of [undef]

This is important for the list of clone urls, where if there are
no per-repository clone URL configured, the default base URLs
are never used for URL construction without this patch.

Add tests for different ways of setting project URLs, just in case.
Note that those tests in current form wouldn't detect breakage fixed
by this patch, as it only checks for errors and not for expected
output.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2 files changed, 26 insertions, 1 deletions

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 2a0c46c234..28bb8c3933 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -1511,7 +1511,7 @@ sub config_to_int {
 sub config_to_multi {
 	my $val = shift;
 
-	return ref($val) ? $val : [ $val ];
+       return ref($val) ? $val : (defined($val) ? [ $val ] : []);
 }
 
 sub git_get_project_config {
diff --git a/t/t9500-gitweb-standalone-no-errors.sh b/t/t9500-gitweb-standalone-no-errors.sh
index 35fff3ddba..796cd7dba0 100755
--- a/t/t9500-gitweb-standalone-no-errors.sh
+++ b/t/t9500-gitweb-standalone-no-errors.sh
@@ -558,6 +558,31 @@ test_expect_success \
 test_debug 'cat gitweb.log'
 
 # ----------------------------------------------------------------------
+# testing config_to_multi / cloneurl
+
+test_expect_success \
+       'URL: no project URLs, no base URL' \
+       'gitweb_run "p=.git;a=summary"'
+test_debug 'cat gitweb.log'
+
+test_expect_success \
+       'URL: project URLs via gitweb.url' \
+       'git config --add gitweb.url git://example.com/git/trash.git &&
+        git config --add gitweb.url http://example.com/git/trash.git &&
+        gitweb_run "p=.git;a=summary"'
+test_debug 'cat gitweb.log'
+
+cat >.git/cloneurl <<\EOF
+git://example.com/git/trash.git
+http://example.com/git/trash.git
+EOF
+
+test_expect_success \
+       'URL: project URLs via cloneurl file' \
+       'gitweb_run "p=.git;a=summary"'
+test_debug 'cat gitweb.log'
+
+# ----------------------------------------------------------------------
 # gitweb config and repo config
 
 cat >>gitweb_config.perl <<EOF