Commits on December 17, 2025

1. Add -NUM context shorthand (e.g., -3 = -C 3)

   GNU grep supports -NUM as a shorthand for -C NUM.
   This is commonly used: `grep -3 pattern` instead of `grep -C 3 pattern`.

   espadonne committed 4 months ago
   55507b9
2. Add Unicode support, increase line buffer, fix mixed line endings

   - Enable PCRE2_UTF and PCRE2_UCP for full Unicode support
   - Unicode character classes (\p{L}, \p{N}, etc.) now work
   - Unicode case folding for -i flag
   - Increase max_line_len from 8KB to 1MB
   - Strip trailing \r for Windows line endings on Unix
   - Add 4 Unicode tests to test suite (71 total)

   espadonne committed 4 months ago
   fea3e07
3. Add full PCRE support via libpcre2

   Implements -P/--perl-regexp with complete PCRE2 functionality:
   - Lookahead/lookbehind assertions
   - Non-capturing groups (?:...)
   - Named groups (?P<name>...)
   - PCRE character classes (\d, \w, \s, etc.)
   - Word boundaries (\b)
   
   New pcre_api.f90 module provides C bindings to libpcre2-8.
   Makefile now links against libpcre2 via pkg-config.

   espadonne committed 4 months ago
   dcfb169
4. Add attached args (-C1), multiple --include/--exclude/--exclude-dir

   espadonne committed 4 months ago
   77bcacd
5. Add --group-separator, --no-group-separator, -y

   espadonne committed 4 months ago
   13c72c1
6. Add --exclude-from, --include-from, -U/--binary, --no-ignore-case

   espadonne committed 4 months ago
   fb013b9
7. Add --label, --binary-files, --line-buffered, -z, -d/-D options

   espadonne committed 4 months ago
   2104bf0
8. Add recursive search, glob filters, binary detection, color auto

   espadonne committed 4 months ago
   02f6d4b
9. Add output enhancements: -o, context lines, color

   - Fix -o to print only matched portions (multiple per line)
   - Implement context lines (-A, -B, -C) with group separators
   - Add --color=always support with ANSI escape codes
   - Add tests for output options and context lines

   espadonne committed 4 months ago
   fc29ba4
10. Integrate regex engine for BRE/ERE support

    - Update Makefile with regex module dependencies and comprehensive tests
    - Update ferp_matcher.f90 to use regex_api for pattern matching
    - Update main.f90 to compile patterns once for efficiency
    - Add 36 tests covering BRE, ERE, POSIX classes, anchors, quantifiers

    espadonne committed 4 months ago
    2467036
11. Add Thompson NFA regex engine

    - regex_types.f90: Token, AST, and NFA data structures
    - regex_lexer.f90: BRE/ERE pattern tokenization with POSIX classes
    - regex_parser.f90: Recursive descent parser for AST construction
    - regex_nfa.f90: Thompson construction algorithm
    - regex_engine.f90: NFA simulation with epsilon closure
    - regex_api.f90: Public interface (compile, match, search)

    espadonne committed 4 months ago
    913bdae
12. formatting things

    espadonne committed 4 months ago
    09f76c0
13. add readme

    espadonne committed 4 months ago
    4a543cf
14. Add I/O, output, matcher, and main - working fixed-string grep

    espadonne committed 4 months ago
    87db34f
15. Add CLI argument parsing

    espadonne committed 4 months ago
    39df5df
16. Add foundation modules (kinds, options)

    espadonne committed 4 months ago
    e573eb2
17. build things

    espadonne committed 4 months ago
    3360f40
18. init

    espadonne committed 4 months ago
    69cfadb