ui-log: show ellipsis if detailed commit message is available

The existence of a detailed commit message may be of interst even
if only the subject is shown by default.

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

cgit.css

@@ -673,6 +673,14 @@ div#cgit div.footer a:hover {
 	text-decoration: underline;
 }
 
+div#cgit span.msg-avail {
+	color: #000;
+	margin: 0px 0.5em;
+	padding: 0px 0.25em;
+	background-color: #f0f0f0;
+	border: solid 1px #777777;
+}
+
 div#cgit a.branch-deco {
 	color: #000;
 	margin: 0px 0.5em;

ui-log.c

@@ -240,6 +240,8 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
 	}
 	cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
 			 oid_to_hex(&commit->object.oid), ctx.qry.vpath);
+	if (!ctx.qry.showmsg && strlen(info->msg) > 0)
+		html("<span class='msg-avail'>...</span>");
 	show_commit_decorations(commit);
 	html("</td><td>");
 	cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");