-[[test.y:4.12-18: invalid reference: `$.field'
-test.y:4.13: syntax error after `$', expecting integer, letter, `_', `@<:@', or `$'
+[[test.y:4.12-18: invalid reference: '$.field'
+test.y:4.13: syntax error after '$', expecting integer, letter, '_', '@<:@', or '$'