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Ran 02 Aug 2026 11:24AM UTC

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Build # 30745667163

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push

github

Committed by

igordejanovic

Commit Message

feat: detect non-consuming repetitions at metamodel construction

Arpeggio 3.0 (BIC) removed the soft-failure mechanism in repetitions,
so non-consuming matches nested inside ZeroOrMore/OneOrMore would
previously loop forever. textX now validates the constructed parser
model (via arpeggio.validate_parser_model) after rule cross-reference
resolution and raises TextXSemanticError with the position of the
offending repetition in the grammar.

- Attach grammar source position/rule/attr info to repetition and
  assignment parser expressions via user_data in lang.py.
- Fix invalid example grammars (hello_world and generators fixture)
  which used a nullable regex /[^,]*/ inside a += repetition.
- Tests for direct, through-rule-ref (DAG) and *= assignment cases.
- Bump Arpeggio dependency to >= 3.0.0 (BIC) and document in
  CHANGELOG.

Refs textX/Arpeggio#96, textX/Arpeggio#101

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