Addresses part of #32140, in particular: - this will make it so that double backslashes in double-quoted strings will result in a single backslash. While in single quotes it remains a double backslash. - missing closing " and ' will now generate an error Signed-off-by: Doug Davis <dug@us.ibm.com> Upstream-commit: 2fb7c3c4f0b2fe15e279729a87c465df4fa70879 Component: engine