On August 25, 2020 at 9:13 PM, "Rob McBroom" <mailinglist0@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