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Improve Python 3.15 parser diagnostics and recovery - #7

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youknowdot wants to merge 7 commits into

RustPython:rustpython-0.17.5from

youknowdot:pep798-unpacking-operands-315

Draft

Improve Python 3.15 parser diagnostics and recovery#7
youknowdot wants to merge 7 commits into
RustPython:rustpython-0.17.5from
youknowdot:pep798-unpacking-operands-315

Commits on Nov 14, 2026
- Support full PEP 798 unpacking operands and diagnostics
  
  youknowdot
  authored and
  codex
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  e19f1e9
- Use Python 3.15 parameter diagnostic wording
  
  youknowdot
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  codex
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  6a47eea
- Add focused Python 3.15 statement diagnostics
  
  youknowdot
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  codex
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  88f9a50
- Locate concatenation comma hints on the final literal line
  
  youknowdot
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  codex
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  d9f3c54
- Identify unclosed multiline replacement fields
  
  youknowdot
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  codex
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  03ed28c
- Keep CPython diagnostics separate from upstream PEP 798 grammar support
  codex
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  98b716f
- Preserve latest base recovery for misplaced lazy imports
  codex
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  cd0390f