.. include:: links.rst Grako Compatibility ------------------- |TatSu| is routinely tested over major projects developed with Grako_. The backwards-compatibility suite includes (at least) translators for COBOL_, Java_, and (Oracle) SQL_. Grako_ grammars and projects can be used with |TatSu|, with these caveats: * The `AST`_ type retuned when a sequence of elements is matched is now ``tuple`` (instead of a descendant of ``list``). This change improves efficiency and avoids unwanted manipulations of a value that should be inmutable. * The Python_ module name changed to ``tatsu``. * ``ignorecase`` no longer applies to regular expressions in grammars. Use ``(?i)`` in the pattern to enable ``re.IGNORECASE`` * Left recursion is enabled by default because it works and has zero impact on non-recursive grammars. * Deprecated grammar syntax is no longer documented. It's best not to use it, as it will be removed in a future version of |TatSu|.