8000 bpo-42123: Run the parser two times and only enable invalid rules on the second run by lysnikolaou · Pull Request #22111 · python/cpython · GitHub
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bpo-42123: Run the parser two times and only enable invalid rules on the second run #22111

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Add NEWS blurb
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lysnikolaou committed Oct 22, 2020
commit 88ab59f9f51eca38568c35aee930ef1e9932555f
Original file line number Diff line number Diff line change
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Run the parser two times. On the first run, disable all the rules that only
generate better error messages to gain performance. If there's a parse
failure, run the parser a second time with those enabled.
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