config: make empty js= omit script tag

According to the cgitrc man page, an empty js= value should cause the
script tag to be omitted. But instead, a script tag with an empty URL
is emitted. The same applies to css. So, skip emitting a tag if the
specified string is empty.

Signed-off-by: Samuel Lidén Borell <samuel@kodafritt.se>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/ui-shared.c b/ui-shared.c
index 959ed8b..25bd3f4 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -770,6 +770,10 @@ static void print_rel_vcs_link(const char *url)
 
 static int emit_css_link(struct string_list_item *s, void *arg)
 {
+        /* Do not emit anything if css= is specified. */
+        if (s && *s->string == '\0')
+                return 0;
+
         html("<link rel='stylesheet' type='text/css' href='");
         if (s)
                 html_attr(s->string);
@@ -782,6 +786,10 @@ static int emit_css_link(struct string_list_item *s, void *arg)
 
 static int emit_js_link(struct string_list_item *s, void *arg)
 {
+        /* Do not emit anything if js= is specified. */
+        if (s && *s->string == '\0')
+                return 0;
+
         html("<script type='text/javascript' src='");
         if (s)
                 html_attr(s->string);