--- a/mercurial/templates/static/style-paper.css	Thu Jul 04 14:18:44 2013 +0400
+++ b/mercurial/templates/static/style-paper.css	Thu Jul 04 14:19:13 2013 +0400
@@ -218,6 +218,7 @@
   display: inline-block;
   width: 100%;
   padding: 1px 0px;
+  white-space: pre-wrap;
   counter-increment: lineno;
 }