of the #line lines with path names including backslashes.
* New directives.
- `%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose' and
- `%debug'.
+ `%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose',
+ `%debug', `%source_extension' and `%header_extension'.
\f
Changes in version 1.28: