-[[test.y:11.23: invalid character in bracketed name: `*'
-test.y:11.24: invalid character in bracketed name: `&'
-test.y:11.25: invalid character in bracketed name: `-'
-test.y:11.27: invalid character in bracketed name: `+'
+[[test.y:11.23: invalid character in bracketed name: '*'
+test.y:11.24: invalid character in bracketed name: '&'
+test.y:11.25: invalid character in bracketed name: '-'
+test.y:11.27: invalid character in bracketed name: '+'
+test.y:11.28: invalid character in bracketed name: '\0'
+test.y:11.28: invalid character in bracketed name: '\001'
+test.y:11.28: invalid character in bracketed name: '\002'
+test.y:11.28: invalid character in bracketed name: '\377'