ocaml/merlin

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Context sensitive completion for OCaml in Vim and Emacs

Stars: 1.7k
Forks: 257
Open beginner issues: 1
Indexed issues: 232
Avg merge: 15h 14m
Merged PRs (30d): 3

Dominant language: OCaml
License: MIT
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

232 open issues indexed

Record-field completions discard deprecation attributes Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

ocaml/merlin#2123 · Opened Sep 10, 2026
Go to method definition Open

Kind/Bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

ocaml/merlin#2122 · Opened Sep 8, 2026
Occurrences: duplicate result on recovered let binding Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

ocaml/merlin#2113 · 2 comments · Opened Aug 1, 2026
Unexpected Assert_failure in destruct Open

ocaml/merlin#2112 · 2 comments · 1 assignee · Opened Jul 31, 2026
Merlin's outline feature sometimes return a `selection` field that is not included in the `location` field. Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

ocaml/merlin#2106 · 3 comments · Opened Jul 22, 2026
Windows CI started failing on July 1st for no apparent reason Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ocaml/merlin#2096 · Opened Jul 16, 2026
Type-enclosing resolves `*` in tuple types as integer multiplication Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

ocaml/merlin#2093 · Opened Jul 12, 2026
Compiler upstreamings Open

ocaml/merlin#2091 · 1 comment · 1 assignee · Opened Jul 8, 2026
renaming type in signature doesn't change implementation (same file) Open

Kind/Feature-request

Difficulty 4/5 3-5 days Newbie friendliness 52/100

ocaml/merlin#2084 · 1 comment · Opened Jun 23, 2026
truncated error message with Emacs+Merlin on OCaml 5.04 and v5.7.1-504 Open

Area/Emacs good first issue

ocaml/merlin#2080 · 7 comments · 1 assignee · Opened Jun 18, 2026
Adding project-wide type-aware search for ocaml code patterns (ocamlgrep) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

ocaml/merlin#2063 · 9 comments · Opened May 1, 2026
Merlin enters debugger repeatedly (OxCaml) Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

ocaml/merlin#2045 · 3 comments · Opened Mar 7, 2026
Unable to find declaration of type when editor position is in another declaration Open

good first issue Kind/Bug

Difficulty 4/5 3-5 days Newbie friendliness 20/100

ocaml/merlin#2033 · 1 comment · 1 reaction · Opened Feb 6, 2026
CI failure Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

ocaml/merlin#2006 · 5 comments · Opened Nov 21, 2025
This valid snippet produce a non-sensical error message Open

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

ocaml/merlin#2000 · 1 reaction · Opened Nov 20, 2025
Take advantage of new compiler features Open

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

ocaml/merlin#1999 · Opened Nov 20, 2025
Locate command fails on multi-line type definitions Open

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

ocaml/merlin#1987 · Opened Nov 3, 2025
`document` concatenates consecutive variants and labels Open

ocaml/merlin#1983 · 1 assignee · Opened Oct 27, 2025
Jump to definition: jumps to decl inside recursive modules Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

ocaml/merlin#1980 · 1 comment · Opened Oct 21, 2025
Error discrepancy between dune build and ocaml-lsp for ppx expressions Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

ocaml/merlin#2082 · 1 comment · Opened Jul 4, 2025
Inconsistent type variables from type-enclosing Open

Kind/Feature-request

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

ocaml/merlin#1949 · Opened Jul 2, 2025
Jumping to `Core.Md5` fails with `Several source files in your path have the same name` Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ocaml/merlin#1934 · 10 comments · Opened May 15, 2025
Jump to wrong definition when using record field punning with module path Open

Kind/Bug

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ocaml/merlin#1929 · Opened Apr 29, 2025
Visual hint in .ml to distinguish exported function Open

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

ocaml/merlin#1926 · Opened Apr 21, 2025
Include documentation of values in the type of modules Open

Kind/Feature-request

Difficulty 4/5 3-5 days Newbie friendliness 54/100

ocaml/merlin#1921 · 2 comments · Opened Apr 4, 2025
Go-to-definition does not work on custom operators Open

Kind/Bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

ocaml/merlin#1915 · 4 comments · Opened Mar 27, 2025
Not working with neovim and Nix: Key not present in Dictionary: "oca mlmerlin_path" Open

Area/Vim

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

ocaml/merlin#1914 · 1 comment · Opened Mar 26, 2025
Duplicated open flags revealing a dunolint bug Open

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

ocaml/merlin#1912 · Opened Mar 17, 2025
README reworking Open

Kind/Docs

Difficulty 4/5 3-5 days Newbie friendliness 42/100

ocaml/merlin#1898 · Opened Feb 20, 2025
Top level license file inconsistent with some file headers (some are LGPL 2.1 with link exception) Open

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

ocaml/merlin#1893 · Opened Feb 5, 2025
emacs: add a shortcut for ac-merlin-locate but with merlin-locate-preference flipped Open

Area/Emacs good first issue Kind/Feature-request

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

ocaml/merlin#1878 · 1 comment · Opened Dec 18, 2024
Short-paths handles `open` poorly Open

Kind/Bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

ocaml/merlin#1873 · 1 comment · Opened Dec 12, 2024
Question about using just the basename of the file in Merlin Open

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

ocaml/merlin#1871 · 1 comment · Opened Dec 3, 2024
Feature Request: Use single .merlin file even when subprojects have dune-project or dune-workspace Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ocaml/merlin#1869 · 2 comments · Opened Dec 1, 2024
Library information unavailable when dune executable name is a prefix of another Open

Kind/Bug

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

ocaml/merlin#1867 · 3 comments · Opened Nov 26, 2024
Search-by-type, improve cost computation of tycon Open

ocaml/merlin#1859 · 1 assignee · Opened Oct 24, 2024
Go-to-definition (via LSP) fails in merlin sourcetree when symbols are from copied sources Open

Kind/Bug

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

ocaml/merlin#1842 · 2 comments · Opened Sep 27, 2024
:MerlinOccurrencesProjectWide fails with KeyError Open

Area/Vim Kind/Bug

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

ocaml/merlin#1832 · 2 comments · Opened Sep 21, 2024
GADTs: Incorrect types inferred in recursive function while modifying code Open

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

ocaml/merlin#1829 · 1 comment · Opened Sep 18, 2024
ocamllsp(hole)/"typed hole" error on locally abstract type in an incomplete fragment Open

Kind/Bug

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

ocaml/merlin#1826 · 1 comment · Opened Sep 17, 2024
Compatibility with recent menhir Open

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

ocaml/merlin#1824 · 6 comments · Opened Sep 17, 2024
`$(opam var share)/merlin/vim/doc/tags` should be deleted on uninstall Open

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

ocaml/merlin#1822 · 2 comments · Opened Sep 16, 2024
Example of locate failing to resolve (with opam monorepo) Open

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

ocaml/merlin#1821 · 3 comments · Opened Sep 16, 2024
Merlin Enhanced Jump Command Open

Kind/Feature-request

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

ocaml/merlin#1817 · 2 reactions · Opened Aug 30, 2024
The request for documentation of function argument gives documentation for whole function Open

Kind/Bug

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

ocaml/merlin#1809 · 1 comment · Opened Aug 6, 2024
Permissions and deletion of temporary files created by preprocessors (pp) Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

ocaml/merlin#1802 · 1 comment · Opened Jul 17, 2024
Exception Not_found in merlin locate Open

Kind/Bug

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

ocaml/merlin#1797 · 1 comment · Opened Jul 9, 2024
Wildcard constructor patterns display an incorrect type on hover Open

Kind/Bug

ocaml/merlin#1792 · 5 comments · 1 assignee · Opened Jul 2, 2024
No config found for file .ocamlinit. Try calling 'dune build'. Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

ocaml/merlin#1790 · 3 comments · Opened Jun 18, 2024
`case-analysis` fails to load module Open

Kind/Bug

ocaml/merlin#1786 · 2 comments · 1 assignee · Opened Jun 17, 2024

ocaml/merlin

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