Serhiy StorchakaandClaude Opus 4.8 fde4cf862c gh-152033: Optimize category escapes outside character sets (GH-152035) ...

Character class escapes (``\d``, ``\D``, ``\s``, ``\S``, ``\w`` and
``\W``) that occur outside a character set are now compiled directly to a
single CATEGORY opcode instead of being wrapped in an IN block.  This
removes the IN wrapper (three code words) and an indirect charset() call,
and makes such an escape a simple repeatable unit so that, for example,
``\d+`` uses the REPEAT_ONE fast path; a CATEGORY case is added to
SRE(count).

The transformation preserves behaviour exactly.  For category-heavy
patterns the compiled byte code is about 20% smaller and matching is up
to ~2x faster, with no effect on patterns that do not use bare category
escapes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-24 08:49:14 +03:00

..

clinic

gh-86519: Add prefixmatch APIs to the re module (GH-31137)

2026-02-15 17:43:39 -08:00

sre_constants.h

gh-105687: Remove deprecated objects from re module (#105688)

2023-06-14 12:26:20 +02:00

sre_lib.h

gh-152033: Optimize category escapes outside character sets (GH-152035)

2026-06-24 08:49:14 +03:00

sre_targets.h

gh-97669: Create Tools/build/ directory (#97963)

2022-10-17 12:01:00 +02:00

sre.c

gh-152033: Optimize category escapes outside character sets (GH-152035)

2026-06-24 08:49:14 +03:00

sre.h

gh-67877: Fix memory leaks in terminated RE matching (GH-126840)

2024-11-18 11:53:45 +02:00