Syntax error not reported

[andrescodas]

I posted other instance here: tree-sitter/tree-sitter#1773

[ObserverOfTime]

Solving this may require tree-sitter/tree-sitter#1635.

[radrow]

I am afraid that you need to accept this at the parsing level and then make another run of queries such as ((identifier) @bad (#match? @bad "while|def|for")) to report second-stage errors. Unfortunately, it won't help you when this affects error recovery, or worse, conflict solving. Gotta wait for the reserved keywords feature.