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-input.y:3.14: invalid character: '}'
-input.y:4.1: invalid character: '%'
-input.y:4.2: invalid character: '&'
-input.y:5.1-17: invalid directive: '%a-does-not-exist'
-input.y:6.1: invalid character: '%'
-input.y:6.2: invalid character: '-'
-input.y:7.1-8.0: missing '%}' at end of file
-input.y:7.1-8.0: syntax error, unexpected %{...%}
+[[input.y:1.1: invalid character: '\0'
+input.y:1.1: invalid character: '\001'
+input.y:1.1: invalid character: '\002'
+input.y:1.1: invalid character: '\377'
+input.y:1.2: invalid character: '?'
+input.y:3.1: invalid character: '?'
+input.y:4.14: invalid character: '}'
+input.y:5.1: invalid character: '%'
+input.y:5.2: invalid character: '&'
+input.y:6.1-17: invalid directive: '%a-does-not-exist'
+input.y:7.1: invalid character: '%'
+input.y:7.2: invalid character: '-'
+input.y:8.1-9.0: missing '%}' at end of file
+input.y:8.1-9.0: syntax error, unexpected %{...%}