replace form feeds with an <hr> tag.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49975 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Rewrite/HTMLRewrite.cpp

@@ -122,6 +122,10 @@ void html::EscapeText(Rewriter& R, unsigned FileID,
         RB.ReplaceText(FilePos, 1, " ", 6);
       ++ColNo;
       break;
+    case '\f':
+      RB.ReplaceText(FilePos, 1, "<hr>", 4);
+      ColNo = 0;
+      break;
         
     case '\t': {
       if (!ReplaceTabs)