Bug 290274 - [mozTXTToHTMLConv] 'clever formatting' of plaintext strips caret from superscript display (x^2 => x2); r=BenB,honzab

netwerk/streamconv/converters/mozTXTToHTMLConv.cpp

@@ -1004,7 +1004,10 @@ mozTXTToHTMLConv::GlyphHit(const PRUnichar * aInString, PRInt32 aInLength, PRBoo
 
     outputHTML.Truncate();
     outputHTML += text0;
-    outputHTML.AppendLiteral("<sup class=\"moz-txt-sup\">");
+    outputHTML.AppendLiteral(
+      "<sup class=\"moz-txt-sup\">"
+      "<span style=\"display:inline-block;width:0;height:0;overflow:hidden\">"
+      "^</span>");
 
     aOutputString.Append(outputHTML);
     aOutputString.Append(&aInString[2], delimPos - 2);