ext/markdown/autolink.c in github-markdown-0.5.3 vs ext/markdown/autolink.c in github-markdown-0.5.4

@@ -234,11 +234,11 @@
 		else if (c != '-' && c != '_')
 			break;
 	}
 
 	if (link_end < 2 || nb != 1 || np == 0 ||
-		!isalpha(data[link_end - 1]))
+		(!isalpha(data[link_end - 1]) && data[link_end - 1] != '.'))
 		return 0;
 
 	link_end = autolink_delim(data, link_end, max_rewind, size);
 
 	if (link_end == 0)
@@ -292,6 +292,5 @@
 	bufput(link, data - rewind, link_end + rewind);
 	*rewind_p = rewind;
 
 	return link_end;
 }
-