On August 25, 2020 at 9:13 PM, "Rob McBroom" <mailinglist0(a)skurfer.com> wrote: It doesn’t auto-indent after (, but that’s probably the language grammar. I had a quick look, and yes, it's the grammar. Around line 367 this pattern, that I don't claim to understand the purpose of, gobbles up () {   begin = '(\()';     end = '(\))';     patterns = ( { include = '$self'; } ); }, before the pattern matching tuples around line 392 get a chance to process it {   name = 'meta.structure.tuple.python';     match = '(\()(\s*(\)))';     captures = {         1 = { name = 'punctuation.definition.tuple.begin.python'; };         2 = { name = 'meta.empty-tuple.python'; };         3 = { name = 'punctuation.definition.tuple.end.python'; };     }; }, so, effectively, tuples aren't recognized by the grammar.  I deleted the first entry and got expansion of () working without any obvious destructive side-effects. YMMV. Cheers, Per