peterxcli commented on PR #5682:
URL: 
https://github.com/apache/datafusion-comet/pull/5682#issuecomment-5553299686

   Addressed the follow-up:
   
   - Added the ASCII-class throughput explanation to the description, 
attributing the benchmark numbers to your measurements, and documented the 
invariant beside the regexes.
   - Added `2020-10-1` / `2020-12-1` to the Rust and Scala corpora, 
negative-year Scala cases, and both Unicode fraction panic examples. Checked 
slices in both decoders now prevent the boundary panic independently of the 
regexes; direct decoder tests cover that.
   - Included `trim_end()` and exact TZ/NTZ regression values for the spaced 
offset.
   - Added benchmark shapes for single-digit segments, empty fractions, and 
rejected date-only zones.
   - Widened the fuzz alphabet with `-`, `.`, `+`, and `Z`. This exposed a 
separate positive-year mismatch (`+7528`, etc.), now filed as #5716 and 
documented in the compatibility guide. Only bare positive years are excluded 
pending that fix; the wider alphabet stays.
   
   Validation: 662 Rust tests passed; `make core`, benchmark compilation, all 
77 benchmark smoke cases, Clippy (`-D warnings`), and formatting/style checks 
passed. The Spark 4.1.3 full cast suite had 169 passes and the one 
positive-year failure; after excluding that tracked case, all 7 
string-to-timestamp tests passed, including both segment-rule suites and the 
widened fuzz test.
   


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