feat(phase-13): String pattern matching engine#135
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davydog187 merged 2 commits intomainfrom Feb 12, 2026
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Implement Lua's pattern matching language: - Character classes (%a, %d, %l, %u, %w, %s, %p, %c) - Quantifiers (*, +, -, ?) - Anchors (^, $), sets ([abc], [^abc]) - Captures, backreferences (%1-%9), balanced match (%bxy) - string.find, string.match, string.gmatch, string.gsub Implements Phase 13 from plan.md
Add 16 property tests for the Pattern module covering: find: - Literal substrings found at valid positions - Result positions are valid 1-based indices - Anchored ^... patterns only match at position 1 - End anchor ...$ always matches at end of string match: - Captures are substrings of the subject - Without captures returns the full match gmatch: - All matches are non-overlapping and in order - Digit pattern matches are all digit-only strings gsub: - Replacing each char with itself (%0) is identity - Count equals number of matches from gmatch - max_n parameter limits replacements - Replacing with empty string shortens result Character class complementarity: - %d and %D partition all characters - %a and %A partition all characters - %w and %W partition all characters - %s and %S partition all characters Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
Lua.VM.Stdlib.Patternmodule implementing Lua's pattern languagestring.find,string.match,string.gmatch,string.gsubimplementationsTest plan
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