ui-tree: provide link to about page for pretty formatting

We have an ongoing discussion about display filters and pretty
formatting in tree view. How about providing a link to about page
for pretty formatting?

Signed-off-by: Christian Hesse <mail@eworm.de>

ui-shared.c

@@ -346,6 +346,12 @@ void cgit_tree_link(const char *name, const char *title, const char *class,
 	reporevlink("tree", name, title, class, head, rev, path);
 }
 
+void cgit_about_link(const char *name, const char *title, const char *class,
+		     const char *head, const char *rev, const char *path)
+{
+	reporevlink("about", name, title, class, head, rev, path);
+}
+
 void cgit_plain_link(const char *name, const char *title, const char *class,
 		     const char *head, const char *rev, const char *path)
 {

ui-shared.h

@@ -24,6 +24,9 @@ extern void cgit_tag_link(const char *name, const char *title,
 extern void cgit_tree_link(const char *name, const char *title,
 			   const char *class, const char *head,
 			   const char *rev, const char *path);
+extern void cgit_about_link(const char *name, const char *title,
+			    const char *class, const char *head,
+			    const char *rev, const char *path);
 extern void cgit_plain_link(const char *name, const char *title,
 			    const char *class, const char *head,
 			    const char *rev, const char *path);

ui-tree.c

@@ -110,6 +110,9 @@ static void print_object(const struct object_id *oid, const char *path, const ch
 
 	cgit_print_layout_start();
 	htmlf("blob: %s (", oid_to_hex(oid));
+	cgit_about_link("about", NULL, NULL, ctx.qry.head,
+		        rev, path);
+	html(") (");
 	cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 		        rev, path);
 	if (ctx.repo->enable_blame && !is_binary) {