Nvim :help pages, generated from source using the tree-sitter-vimdoc parser.

Notable changes in Nvim 0.10 from 0.9
For changes in Nvim 0.9, see news-0.9.

BREAKING CHANGES news-breaking

The following changes may require adaptations in user config or plugins.
vim.tbl_islist() now checks whether a table is actually list-like (i.e., has integer keys without gaps and starting from 1). For the previous behavior (only check for integer keys, allow gaps or not starting with 1), use vim.tbl_isarray().
"#" followed by a digit no longer stands for a function key at the start of the lhs of a mapping.
:behave was removed.
If you used :behave xterm, the following is equivalent:
set mousemodel=extend
If you used :behave mswin, the following is equivalent:
set selection=exclusive
set selectmode=mouse,key
set mousemodel=popup
set keymodel=startsel,stopsel
When switching windows, CursorMoved autocommands trigger when Nvim is back in the main loop rather than immediately. This is more compatible with Vim.
-l ensures output ends with a newline if the script prints messages and doesn't cause Nvim to exit.
LspRequest and LspProgressUpdate (renamed to LspProgress) autocmds were promoted from a User autocmd to first class citizen.
Renamed vim.treesitter.playground to
Removed functions from the vim.json module:
Unnecessary, undocumented functions which caused global side-effects.
vim.json.null is redundant with vim.NIL.
vim.json.array_mt (and related) is redundant with vim.empty_dict().
Removed some Vim 5.0<= option compatibilities:
'backspace' no longer supports number values. Instead:
for backspace=0 set backspace= (empty)
for backspace=1 set backspace=indent,eol
for backspace=2 set backspace=indent,eol,start (default behavior in Nvim)
for backspace=3 set backspace=indent,eol,nostop
paths in 'backupdir', 'path' and 'cdpath' can no longer be separated with spaces (but paths themselves may contain spaces now).
'directory' will no longer remove a > at the start of the option.
LanguageTree:parse() will no longer parse injections by default and now requires an explicit range argument to be passed. If injections are required, provide an explicit range via parser:parse({ start_row, end_row }).

NEW FEATURES news-features

The following new APIs and features were added.
'diffopt' "linematch" scoring algorithm now favours larger and less groups
Treesitter highlighting now parses injections incrementally during screen redraws only for the line range being rendered. This significantly improves performance in large files with many injections.
vim.iter() provides a generic iterator interface for tables and Lua iterators for-in.
Added vim.ringbuf() to create ring buffers.
Added vim.keycode() for translating keycodes in a string.
'smoothscroll' option to scroll by screen line rather than by text line when 'wrap' is set.
Added inline virtual text support to nvim_buf_set_extmark().
'foldtext' now supports virtual text format. fold-foldtext
The terminal buffer now supports reflow (wrapped lines adapt when the buffer is resized horizontally). Note: Lines that are not visible and kept in 'scrollback' are not reflown.
vim.system() for running system commands.
Added nvim_win_text_height() to compute the number of screen lines occupied by a range of text in a given window.
nvim_set_keymap() and nvim_del_keymap() now support abbreviations.
Builtin TUI can now recognize "super" (<D-) and "meta" (<T-) modifiers in a terminal emulator that supports tui-csiu.
LSP method names are available in vim.lsp.protocol.Methods.
Added vim.lsp.status() to consume the last progress messages as a string.
LSP client now always saves and restores named buffer marks when applying text edits.
LSP client now supports the positionEncoding server capability. If a server responds with the positionEncoding capability in its initialization response, Nvim automatically sets the client's offset_encoding field.
Dynamic registration of LSP capabilities. An implication of this change is that checking a client's server_capabilities is no longer a sufficient indicator to see if a server supports a feature. Instead use client.supports_method(<method>). It considers both the dynamic capabilities and static server_capabilities.
Added a new anchor_bias option to lsp-handlers to aid in positioning of floating windows.
Bundled parsers and queries (highlight, folds) for Markdown, Python, and Bash.
Added vim.treesitter.query.omnifunc() for treesitter query files (set by default).
Query:iter_matches() now has the ability to set the maximum start depth for matches.
@injection.language now has smarter resolution and will now fallback to language aliases and/or attempt lower case variants of the text. language via aliases (e.g., filetype) registered via vim.treesitter.language.register.
The #set! directive now supports injection.self and injection.parent for injecting either the current node's language or the parent LanguageTree's language, respectively.
Added vim.treesitter.query.edit(), for live editing of treesitter queries.
Improved error messages for query parsing. opens URIs using the system default handler (macOS open, Windows explorer, Linux xdg-open, etc.)
vim.wo can now be double indexed for :setlocal behaviour. Currently only 0 for the buffer index is currently supported.
Lua type annotations for:
Improved messages for type errors in vim.api.* calls (including opts params)
Functions that take a severity as an optional parameter (e.g. vim.diagnostic.get()) now also accept a list of severities vim.diagnostic.severity
New RPC client type msgpack-rpc is added for nvim_set_client_info to support fully MessagePack-RPC compliant clients.
Floating windows can now show footer with new footer and footer_pos config fields. Uses hl-FloatFooter by default.
The :terminal command now accepts some :command-modifiers (specifically :horizontal and those that affect splitting a window).
vim.lsp.util.locations_to_items() sets the user_data of each item to the original LSP Location or LocationLink.


The following changes to existing APIs or features add new behavior.
vim.tbl_contains() now works for general tables and allows specifying a predicate function that is checked for each value. (Use vim.list_contains() for checking list-like tables (integer keys without gaps) for literal values.)
vim.region() can use a string accepted by getpos() as position.
vim.diagnostic.config() now accepts a function for the virtual_text.prefix option, which allows for rendering e.g., diagnostic severities differently.
'comments' includes "fb:•".
'shortmess' includes the "C" flag.
Automatic linting of treesitter query files (see ft-query-plugin). Can be disabled via:
vim.g.query_lint_on = {}
Enabled treesitter highlighting for treesitter query files.
The workspace/didChangeWatchedFiles LSP client capability is now enabled by default.
LspRequest autocmd callbacks now contain additional information about the LSP request status update that occurred.
:source without arguments treats a buffer with its 'filetype' set to "lua" as Lua code regardless of its extension.
:checkhealth buffer now implements folding. The initial folding status is defined by the 'foldenable' option.
:Man now respects 'wrapmargin'
gx now uses and not netrw. To customize, you can redefine or remap gx. To continue using netrw (deprecated):
:call netrw#BrowseX(expand(exists("g:netrw_gx")? g:netrw_gx : '<cfile>'), netrw#CheckIfRemote())<CR>
vim.lsp.start() now maps K to use vim.lsp.buf.hover() if the server supports it, unless 'keywordprg' was customized before calling vim.lsp.start().
Terminal buffers started with no arguments (and use 'shell') close automatically if the job exited without error, eliminating the (often unwanted) "[Process exited 0]" message.
vim.diagnostic.config() now accepts virtual text relevant options to nvim_buf_set_extmark() (e.g. "virt_text_pos" and "hl_mode") in its "virtual_text" table, which gives users more control over how diagnostic virtual text is displayed.
Extmarks now fully support multi-line ranges, and a single extmark can be used to highlight a range of arbitrary length. The nvim_buf_set_extmark() API function already allowed you to define such ranges, but highlight regions were not rendered consistently for a range that covers more than one line break. This has now been fixed. Signs defined as part of a multi-line extmark also apply to every line in the range, not just the first. In addition, nvim_buf_get_extmarks() has gained an "overlap" option to return such ranges even if they started before the specified position.
LSP hover and signature help now use Treesitter for highlighting of Markdown content. Note that syntax highlighting of code examples requires a matching parser and may be affected by custom queries.


The following deprecated functions or APIs were removed.
Vimball support is removed.
:Vimuntar command removed.
Support for legacy treesitter injection queries is removed.

DEPRECATIONS news-deprecations

The following functions are now deprecated and will be removed in a future release.
vim.loop has been renamed to vim.uv.
vim.treesitter.languagetree functions:
Commands index
Quick reference