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Investigate parse_expr/parse_lazy_static/rewrite_macro error count handling #7201

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@jieyouxu

Similar to #7184 (#7195) and #7171.

Related to #7180.

See e.g. #7195 (comment) for an example of inconsistent handling of recoveries.

TODO: minimal reproducers, opened an issue to remind myself.

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  1. self-assigned this
    on Oct 20, 2026
  2. added
    C-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICE
    on Oct 20, 2026
  3. added
    needs-triageThis issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.
    on Oct 20, 2026
  4. added
    A-macrosArea: macros (procedural macros, macro_rules! macros, etc.)
    E-needs-investigationCall for participation: This issue or PR needs further investigation
    and removed
    needs-triageThis issue or PR needs triaging to determine its status. Remove label once sufficiently triaged.
    on Oct 20, 2026
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A-macrosArea: macros (procedural macros, macro_rules! macros, etc.)A-parserArea: parserC-bugCategory: this is a bug; use also I-* labels for specific bug kinds, e.g. I-non-idempotency or I-ICEE-needs-investigationCall for participation: This issue or PR needs further investigation

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