ui-plain.c: add support for path-selected submodule links

In ui-plain.c, the links generated for submodule entry ignored the fact
that the entry was in fact a submodule. This patch adds proper submodule
links to the plain directory listings.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

ui-plain.c

@@ -97,9 +97,12 @@ static void print_dir_entry(const unsigned char *sha1, const char *base,
 	char *fullpath;
 
 	fullpath = buildpath(base, baselen, path);
-	if (!S_ISDIR(mode))
+	if (!S_ISDIR(mode) && !S_ISGITLINK(mode))
 		fullpath[strlen(fullpath) - 1] = 0;
 	html("  <li>");
+	if (S_ISGITLINK(mode)) {
+		cgit_submodule_link(NULL, fullpath, sha1_to_hex(sha1));
+	} else
 		cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 				fullpath);
 	html("</li>\n");