scanner: better TokenString output

R=rsc CC=golang-dev https://golang.org/cl/4373048

scanner: better TokenString output
R=rsc CC=golang-dev https://golang.org/cl/4373048
70bf4215 · Robert Griesemer · 4ffee801 · 70bf4215
Commit 70bf4215 authored Apr 08, 2011 by Robert Griesemer
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scanner.go src/pkg/scanner/scanner.go +1 -1

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--- a/src/pkg/scanner/scanner.go
+++ b/src/pkg/scanner/scanner.go
@@ -115,7 +115,7 @@ func TokenString(tok int) string {
 	if s, found := tokenString[tok]; found {
 		return s
 	}
-	return fmt.Sprintf("U+%04X", tok)
+	return fmt.Sprintf("%q", string(tok))
 }