neovim/src/nvim/api/command.c, branch master

fix(api): leak preview callback LuaRef in nvim_create_user_command #39357

2026-04-24T18:13:24Z

Problem: Invalid `nvim_create_user_command` calls can leak the `preview` callback reference after Neovim has taken ownership of it. 1. build with {a,l}san 2. run: ```sh --headless -u NONE --clean +'lua for i = 1, 100 do pcall(vim.api.nvim_create_user_command, "some very epic stuff" .. i, {}, -- NOTE: this is INVALID (not a function or string) { preview = function() end }) end vim.cmd("qa!") ' +qa ``` 3. see: ``` 100 lua references were leaked! ``` Solution: Clear `preview_luaref` in `err:`.

test: lint naming conventions #39117

2026-04-16T13:35:58Z

Problem: Naming conventions are not automatically checked. Solution: Add a check to the doc generator. Eventually we should extract this somehow, but that will require refactoring the doc generator... Note: this also checks non-public functions, basically anything that passes through `gen_eval_files.lua` and `gen_vimdoc.lua`. And that's a good thing.

refactor(api): rename buffer to buf (positional parameters) #39013

2026-04-15T13:48:21Z

In 3a4a66017b74, 4d3a67cd6201, df8d98173cbc we renamed "buffer" to "buf" in dict parameters and return-values. This commit renames positional parameters. This is only "cosmetic", but is intended to make it extra clear which name is preferred, since people often copy existing code despite the guidelines in `:help dev-naming`.

docs: misc

2026-03-13T19:32:01Z

fix(api): nvim_parse_cmd on range-only, modifier-only commands #36665

2026-03-13T10:06:39Z

Problem: nvim_parse_cmd rejects valid commands like `:1` (range-only) or `aboveleft` (modifier-only). Solution: allow empty command when range or modifiers exist, and handle execution using existing range command logic.

docs: misc, build, lsp

2025-11-23T00:32:45Z

vim-patch:8.1.2077: the ops.c file is too big

2025-09-26T04:29:40Z

Problem: The ops.c file is too big. Solution: Move code for dealing with registers to a new file. (Yegappan Lakshmanan, closes vim/vim#4982) https://github.com/vim/vim/commit/4aea03eb875613e3eae2125b84f02b7cd898b2f8 Co-authored-by: Bram Moolenaar

refactor(build): remove INCLUDE_GENERATED_DECLARATIONS guards

2025-08-14T07:34:38Z

These are not needed after #35129 but making uncrustify still play nice with them was a bit tricky. Unfortunately `uncrustify --update-config-with-doc` breaks strings with backslashes. This issue has been reported upstream, and in the meanwhile auto-update on every single run has been disabled.

fix(api): fix not capturing output in cmdline mode (#35322)

2025-08-13T12:12:47Z

fix(api): fix crash in command preview with % #35228

2025-08-12T20:43:56Z

Problem: parse_cmdline() sets eap->cmdlinep to address of local parameter, causing invalid memory access when expand_filename() tries to modify it. This leads to crashes when typing '%' in user commands with preview=true and complete=file. Solution: Change parse_cmdline() signature to accept char **cmdline, allowing cmdlinep to point to caller's variable for safe reallocation.