code review 4572049: go/scanner: partially revert CL4538096 now that we have...

src/pkg/go/scanner/scanner_test.go

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package scanner
 
 import (
         "go/token"
         "os"
         "path/filepath"
@@ skipping 632 matching lines @@
         }
 }
 
 
 var errors = []struct {
         src string
         tok token.Token
         pos int
         err string
 }{
-        {"\a", token.ILLEGAL, 0, "illegal character '\\a'"},
-        {`#`, token.ILLEGAL, 0, "illegal character '#'"},
-        {`…`, token.ILLEGAL, 0, "illegal character '…'"},
+        {"\a", token.ILLEGAL, 0, "illegal character U+0007"},
+        {`#`, token.ILLEGAL, 0, "illegal character U+0023 '#'"},
+        {`…`, token.ILLEGAL, 0, "illegal character U+2026 '…'"},
         {`' '`, token.CHAR, 0, ""},
         {`''`, token.CHAR, 0, "illegal character literal"},
         {`'\8'`, token.CHAR, 2, "unknown escape sequence"},
         {`'\08'`, token.CHAR, 3, "illegal character in escape sequence"},
         {`'\x0g'`, token.CHAR, 4, "illegal character in escape sequence"},
         {`'\Uffffffff'`, token.CHAR, 2, "escape sequence is invalid Unicode code point"},
         {`'`, token.CHAR, 0, "character literal not terminated"},
         {`""`, token.STRING, 0, ""},
         {`"`, token.STRING, 0, "string not terminated"},
         {"``", token.STRING, 0, ""},
@@ skipping 11 matching lines @@
         {"\"abc\x00def\"", token.STRING, 4, "illegal character NUL"},
         {"\"abc\x80def\"", token.STRING, 4, "illegal UTF-8 encoding"},
 }
 
 
 func TestScanErrors(t *testing.T) {
         for _, e := range errors {
                 checkError(t, e.src, e.tok, e.pos, e.err)
         }
 }