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src/Pure/Tools/isabelle_syntax.scala
changeset 27954 4558d93e83b7
parent 27951 8adddc0b591f
child 29140 e7ac5bb20aed 
--- a/src/Pure/Tools/isabelle_syntax.scala	Sat Aug 23 17:22:54 2008 +0200
+++ b/src/Pure/Tools/isabelle_syntax.scala	Sat Aug 23 17:55:26 2008 +0200
@@ -18,6 +18,7 @@
     result.append("\"")
     for (c <- str) {
       if (c < 32 || c == '\\' || c == '\"') {
+        result.append("\\")
         if (c < 10) result.append('0')
         if (c < 100) result.append('0')
         result.append(c.asInstanceOf[Int].toString)
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