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Pure OCaml regular expressions, with support for Perl and POSIX-style strings

Is ocaml/ocaml-re beginner-friendly?

In the last 30 days, ocaml/ocaml-re merged 17 of 20 pull requests from outside contributors, and its maintainers usually reply within 1 day. 1 beginner-friendly issue is open now.

Stars
260
Forks
70
Open beginner issues
1
Indexed issues
19
Avg merge
10h 45m
Merged PRs (30d)
114
Dominant language
OCaml
License
No license data
Last GitHub push
Aug 10, 2026
Latest indexed
Sep 19, 2026
Contributing guide
No contributing guide
Code of conduct
No code of conduct
Beginner labels
No beginner labels indexed

How to contribute to ocaml/ocaml-re

  1. There is no contributing guide, so start from the README and a few recently merged pull requests to see how changes are proposed.
  2. Pick the open beginner-friendly issue below and comment that you want to work on it before you start.

Issues somebody may already be working on are listed last. List everything by date

  • Re.Str.regexp doc lists back-references, which raise Not_supported
    Open

    Difficulty 1/5 Under an hour Newbie friendliness 92/100

    ocaml/ocaml-re#729 ·

    Maintainers usually reply within 1 day

  • Re.Pcre parse error
    Open

    Difficulty 3/5 1-2 days Newbie friendliness 35/100

    ocaml/ocaml-re#200 · 2 comments ·

    Maintainers usually reply within 1 day

  • Please add a warning that Re.Str is not thread safe
    Open

    Difficulty 2/5 1-3 hours Newbie friendliness 45/100

    ocaml/ocaml-re#194 · 2 comments ·

    Maintainers usually reply within 1 day

  • Suggestion: Printing the Regexes
    Open

    Difficulty 5/5 Over a week Newbie friendliness 25/100

    ocaml/ocaml-re#193 · 1 comment ·

    Maintainers usually reply within 1 day

  • `witness` looks buggy
    Open

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    ocaml/ocaml-re#177 · 2 comments ·

    Maintainers usually reply within 1 day

  • Split on first occurrence of a pattern
    Open

    Difficulty 3/5 1-2 days Newbie friendliness 35/100

    ocaml/ocaml-re#140 · 1 comment ·

    Maintainers usually reply within 1 day

  • Negation in Regular Expressions
    Open

    Difficulty 5/5 Over a week Newbie friendliness 25/100

    ocaml/ocaml-re#73 · 1 reaction ·

    Maintainers usually reply within 1 day

  • Vim style regular expressions
    Open

    Difficulty 5/5 Over a week Newbie friendliness 20/100

    ocaml/ocaml-re#32 ·

    Maintainers usually reply within 1 day

  • [Feature Request] Unicode support
    Open

    Difficulty 5/5 Over a week Newbie friendliness 25/100

    ocaml/ocaml-re#24 · 9 comments · 2 reactions ·

    Maintainers usually reply within 1 day

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