3 files changed, 21 insertions, 7 deletions

diff --git a/cgit.c b/cgit.c
index 9b4815d..3e7e595 100644
--- a/cgit.c
+++ b/cgit.c
@@ -122,3 +122,4 @@ static void cgit_print_repo_page(struct cacheitem *item)
 	} else if (!strcmp(cgit_query_page, "diff")) {
-		cgit_print_diff(cgit_query_sha1, cgit_query_sha2, cgit_query_path);
+		cgit_print_diff(cgit_query_head, cgit_query_sha1, cgit_query_sha2,
+				cgit_query_path);
 	} else {
diff --git a/cgit.h b/cgit.h
index ac710a6..764225d 100644
--- a/cgit.h
+++ b/cgit.h
@@ -159,3 +159,3 @@ extern int cache_expired(struct cacheitem *item);
 extern char *cgit_repourl(const char *reponame);
-extern char *cgit_pageurl(const char *reponame, const char *pagename, 
+extern char *cgit_pageurl(const char *reponame, const char *pagename,
 			  const char *query);
@@ -167,4 +167,4 @@ extern void cgit_print_docend();
 extern void cgit_print_pageheader(char *title, int show_search);
-extern void cgit_print_snapshot_start(const char *mimetype, 
-				      const char *filename, 
+extern void cgit_print_snapshot_start(const char *mimetype,
+				      const char *filename,
 				      struct cacheitem *item);
@@ -178,4 +178,5 @@ extern void cgit_print_tree(const char *rev, const char *hex, char *path);
 extern void cgit_print_commit(const char *hex);
-extern void cgit_print_diff(const char *old_hex, const char *new_hex, char *path);
-extern void cgit_print_snapshot(struct cacheitem *item, const char *hex, 
+extern void cgit_print_diff(const char *head, const char *old_hex, const char *new_hex,
+			    char *path);
+extern void cgit_print_snapshot(struct cacheitem *item, const char *hex,
 				const char *format, const char *prefix,
diff --git a/ui-diff.c b/ui-diff.c
index 999b6f3..afe1c90 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -68,3 +68,3 @@ static void filepair_cb(struct diff_filepair *pair)
 
-void cgit_print_diff(const char *old_hex, const char *new_hex, char *path)
+void cgit_print_diff(const char *head, const char *old_hex, const char *new_hex, char *path)
 {
@@ -73,2 +73,14 @@ void cgit_print_diff(const char *old_hex, const char *new_hex, char *path)
 	unsigned long size;
+	struct commit *commit;
+
+	if (head && !old_hex && !new_hex) {
+		get_sha1(head, sha1);
+		commit = lookup_commit_reference(sha1);
+		if (commit && !parse_commit(commit)) {
+			html("<table class='diff'>");
+			cgit_diff_commit(commit, filepair_cb);
+			html("</td></tr></table>");
+		}
+		return;
+	}