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author | Josh Rahm <joshuarahm@gmail.com> | 2023-01-25 17:57:01 +0000 |
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committer | Josh Rahm <joshuarahm@gmail.com> | 2023-01-25 17:57:01 +0000 |
commit | 9837de570c5972f98e74848edc97c297a13136ea (patch) | |
tree | cc948611912d116a3f98a744e690d3d7b6e2f59a /runtime/doc/lua.txt | |
parent | c367400b73d207833d51e09d663f969ffab37531 (diff) | |
parent | 3c48d3c83fc21dbc0841f9210f04bdb073d73cd1 (diff) | |
download | rneovim-9837de570c5972f98e74848edc97c297a13136ea.tar.gz rneovim-9837de570c5972f98e74848edc97c297a13136ea.tar.bz2 rneovim-9837de570c5972f98e74848edc97c297a13136ea.zip |
Merge remote-tracking branch 'upstream/master' into colorcolchar
Diffstat (limited to 'runtime/doc/lua.txt')
-rw-r--r-- | runtime/doc/lua.txt | 548 |
1 files changed, 333 insertions, 215 deletions
diff --git a/runtime/doc/lua.txt b/runtime/doc/lua.txt index 7330453778..47249a484b 100644 --- a/runtime/doc/lua.txt +++ b/runtime/doc/lua.txt @@ -12,7 +12,7 @@ Lua engine *lua* *Lua* INTRODUCTION *lua-intro* The Lua 5.1 script engine is builtin and always available. Try this command to -get an idea of what lurks beneath: > +get an idea of what lurks beneath: >vim :lua print(vim.inspect(package.loaded)) @@ -21,20 +21,19 @@ Nvim includes a "standard library" |lua-stdlib| for Lua. It complements the which can be used from Lua code (|lua-vimscript| |vim.api|). Together these "namespaces" form the Nvim programming interface. -The |:source| and |:runtime| commands can run Lua scripts. Lua modules can be -loaded with `require('name')`, which by convention usually returns a table. -See |lua-require| for how Nvim finds and loads Lua modules. - -See this page for more insight into Nvim Lua: - https://github.com/nanotee/nvim-lua-guide +Lua plugins and user config are automatically discovered and loaded, just like +Vimscript. See |lua-guide| for practical guidance. +You can also run Lua scripts from your shell using the |-l| argument: > + nvim -l foo.lua [args...] +< *lua-compat* Lua 5.1 is the permanent interface for Nvim Lua. Plugins need only consider Lua 5.1, not worry about forward-compatibility with future Lua versions. If Nvim ever ships with Lua 5.4+, a Lua 5.1 compatibility shim will be provided so that old plugins continue to work transparently. ------------------------------------------------------------------------------- +============================================================================== LUA CONCEPTS AND IDIOMS *lua-concepts* Lua is very simple: this means that, while there are some quirks, once you @@ -56,20 +55,20 @@ https://www.lua.org/doc/cacm2018.pdf versatile control for both Lua and its host (Nvim). *lua-call-function* -Lua functions can be called in multiple ways. Consider the function: > +Lua functions can be called in multiple ways. Consider the function: >lua local foo = function(a, b) print("A: ", a) print("B: ", b) end -The first way to call this function is: > +The first way to call this function is: >lua foo(1, 2) -- ==== Result ==== -- A: 1 -- B: 2 This way of calling a function is familiar from most scripting languages. -In Lua, any missing arguments are passed as `nil`. Example: > +In Lua, any missing arguments are passed as `nil`. Example: >lua foo(1) -- ==== Result ==== -- A: 1 @@ -78,25 +77,24 @@ In Lua, any missing arguments are passed as `nil`. Example: > Furthermore it is not an error if extra parameters are passed, they are just discarded. -It is also allowed to omit the parentheses (only) if the function takes -exactly one string (`"foo"`) or table literal (`{1,2,3}`). The latter is often -used to approximate the "named parameters" feature of languages like Python -("kwargs" or "keyword args"). Example: > + *kwargs* +When calling a function, you can omit the parentheses if the function takes +exactly one string literal (`"foo"`) or table literal (`{1,2,3}`). The latter +is often used to approximate "named parameters" ("kwargs" or "keyword args") +as in languages like Python and C#. Example: >lua local func_with_opts = function(opts) local will_do_foo = opts.foo local filename = opts.filename - ... end func_with_opts { foo = true, filename = "hello.world" } < -There is nothing special going on here except that parentheses are treated as +There's nothing special going on here except that parentheses are treated as whitespace. But visually, this small bit of sugar gets reasonably close to a "keyword args" interface. -It is of course also valid to call the function with parentheses: > - +It is of course also valid to call the function with parentheses: >lua func_with_opts({ foo = true, filename = "hello.world" }) < Nvim tends to prefer the keyword args style. @@ -105,27 +103,22 @@ Nvim tends to prefer the keyword args style. LUA PATTERNS *lua-patterns* Lua intentionally does not support regular expressions, instead it has limited -"patterns" which avoid the performance pitfalls of extended regex. -|luaref-patterns| +"patterns" |luaref-patterns| which avoid the performance pitfalls of extended +regex. Lua scripts can also use Vim regex via |vim.regex()|. -Examples using |string.match()|: > +These examples use |string.match()| to demonstrate Lua patterns: >lua print(string.match("foo123bar123", "%d+")) -- 123 - print(string.match("foo123bar123", "[^%d]+")) -- foo - print(string.match("foo123bar123", "[abc]+")) -- ba - print(string.match("foo.bar", "%.bar")) -- .bar -For more complex matching you can use Vim regex from Lua via |vim.regex()|. - ============================================================================== -IMPORTING LUA MODULES *lua-require* +IMPORTING LUA MODULES *require()* *lua-require* Modules are searched for under the directories specified in 'runtimepath', in the order they appear. Any "." in the module name is treated as a directory @@ -139,8 +132,7 @@ back to Lua's default search mechanism. The first script found is run and The return value is cached after the first call to `require()` for each module, with subsequent calls returning the cached value without searching for, or -executing any script. For further details on `require()`, see the Lua -documentation at https://www.lua.org/manual/5.1/manual.html#pdf-require. +executing any script. For further details on `require()`, see |luaref-require()|. For example, if 'runtimepath' is `foo,bar` and |package.cpath| was `./?.so;./?.dll` at startup, `require('mod')` searches these paths in order @@ -205,7 +197,7 @@ Note: - Although adjustments happen automatically, Nvim does not track current values of |package.path| or |package.cpath|. If you happen to delete some - paths from there you can set 'runtimepath' to trigger an update: > + paths from there you can set 'runtimepath' to trigger an update: >vim let &runtimepath = &runtimepath - Skipping paths from 'runtimepath' which contain semicolons applies both to @@ -231,11 +223,11 @@ arguments separated by " " (space) instead of "\t" (tab). chunk is evaluated as an expression and printed. `:lua =expr` is equivalent to `:lua print(vim.inspect(expr))` - Examples: > + Examples: >vim :lua vim.api.nvim_command('echo "Hello, Nvim!"') -< To see the Lua version: > +< To see the Lua version: >vim :lua print(_VERSION) -< To see the LuaJIT version: > +< To see the LuaJIT version: >vim :lua =jit.version < *:lua-heredoc* @@ -246,7 +238,7 @@ arguments separated by " " (space) instead of "\t" (tab). be preceded by whitespace. You can omit [endmarker] after the "<<" and use a dot "." after {script} (similar to |:append|, |:insert|). - Example: > + Example: >vim function! CurrentLineInfo() lua << EOF local linenr = vim.api.nvim_win_get_cursor(0)[1] @@ -268,7 +260,7 @@ arguments separated by " " (space) instead of "\t" (tab). that becomes the text of the corresponding buffer line. Default [range] is the whole file: "1,$". - Examples: > + Examples: >vim :luado return string.format("%s\t%d", line:reverse(), #line) :lua require"lpeg" @@ -282,7 +274,7 @@ arguments separated by " " (space) instead of "\t" (tab). The whole argument is used as the filename (like |:edit|), spaces do not need to be escaped. Alternatively you can |:source| Lua files. - Examples: > + Examples: >vim :luafile script.lua :luafile % < @@ -293,7 +285,7 @@ luaeval() *lua-eval* *luaeval()* The (dual) equivalent of "vim.eval" for passing Lua values to Nvim is "luaeval". "luaeval" takes an expression string and an optional argument used for _A inside expression and returns the result of the expression. It is -semantically equivalent in Lua to: > +semantically equivalent in Lua to: >lua local chunkheader = "local _A = select(1, ...) return " function luaeval (expstr, arg) @@ -307,11 +299,11 @@ converted to a |Blob|. Conversion of other Lua types is an error. The magic global "_A" contains the second argument to luaeval(). -Example: > +Example: >vim :echo luaeval('_A[1] + _A[2]', [40, 2]) - 42 + " 42 :echo luaeval('string.match(_A, "[a-z]+")', 'XYXfoo123') - foo + " foo < Lua tables are used as both dictionaries and lists, so it is impossible to determine whether empty table is meant to be empty list or empty dictionary. @@ -343,7 +335,7 @@ cases there is the following agreement: form a 1-step sequence from 1 to N are ignored, as well as all non-integral keys. -Examples: > +Examples: >vim :echo luaeval('math.pi') :function Rand(x,y) " random uniform between x and y @@ -360,29 +352,29 @@ treated specially. Vimscript v:lua interface *v:lua-call* From Vimscript the special `v:lua` prefix can be used to call Lua functions -which are global or accessible from global tables. The expression > - v:lua.func(arg1, arg2) -is equivalent to the Lua chunk > +which are global or accessible from global tables. The expression >vim + call v:lua.func(arg1, arg2) +is equivalent to the Lua chunk >lua return func(...) -where the args are converted to Lua values. The expression > - v:lua.somemod.func(args) -is equivalent to the Lua chunk > +where the args are converted to Lua values. The expression >vim + call v:lua.somemod.func(args) +is equivalent to the Lua chunk >lua return somemod.func(...) -In addition, functions of packages can be accessed like > - v:lua.require'mypack'.func(arg1, arg2) - v:lua.require'mypack.submod'.func(arg1, arg2) +In addition, functions of packages can be accessed like >vim + call v:lua.require'mypack'.func(arg1, arg2) + call v:lua.require'mypack.submod'.func(arg1, arg2) Note: Only single quote form without parens is allowed. Using `require"mypack"` or `require('mypack')` as prefixes do NOT work (the latter is still valid as a function call of itself, in case require returns a useful value). The `v:lua` prefix may be used to call Lua functions as |method|s. For -example: > - arg1->v:lua.somemod.func(arg2) +example: >vim + :eval arg1->v:lua.somemod.func(arg2) < You can use `v:lua` in "func" options like 'tagfunc', 'omnifunc', etc. -For example consider the following Lua omnifunc handler: > +For example consider the following Lua omnifunc handler: >lua function mymod.omnifunc(findstart, base) if findstart == 1 then @@ -394,10 +386,10 @@ For example consider the following Lua omnifunc handler: > vim.api.nvim_buf_set_option(0, 'omnifunc', 'v:lua.mymod.omnifunc') Note: The module ("mymod" in the above example) must either be a Lua global, -or use the require syntax as specified above to access it from a package. +or use require() as shown above to access it from a package. Note: `v:lua` without a call is not allowed in a Vimscript expression: -|Funcref|s cannot represent Lua functions. The following are errors: > +|Funcref|s cannot represent Lua functions. The following are errors: >vim let g:Myvar = v:lua.myfunc " Error call SomeFunc(v:lua.mycallback) " Error @@ -411,7 +403,7 @@ The Nvim Lua "standard library" (stdlib) is the `vim` module, which exposes various functions and sub-modules. It is always loaded, thus `require("vim")` is unnecessary. -You can peek at the module properties: > +You can peek at the module properties: >vim :lua print(vim.inspect(vim)) @@ -431,7 +423,7 @@ Result is something like this: > ... } -To find documentation on e.g. the "deepcopy" function: > +To find documentation on e.g. the "deepcopy" function: >vim :help vim.deepcopy() @@ -443,7 +435,7 @@ VIM.LOOP *lua-loop* *vim.loop* `vim.loop` exposes all features of the Nvim event-loop. This is a low-level API that provides functionality for networking, filesystem, and process -management. Try this command to see available functions: > +management. Try this command to see available functions: >vim :lua print(vim.inspect(vim.loop)) < @@ -452,14 +444,14 @@ see |luv-intro| for a full reference manual. *E5560* *lua-loop-callbacks* It is an error to directly invoke `vim.api` functions (except |api-fast|) in -`vim.loop` callbacks. For example, this is an error: > +`vim.loop` callbacks. For example, this is an error: >lua local timer = vim.loop.new_timer() timer:start(1000, 0, function() vim.api.nvim_command('echomsg "test"') end) < -To avoid the error use |vim.schedule_wrap()| to defer the callback: > +To avoid the error use |vim.schedule_wrap()| to defer the callback: >lua local timer = vim.loop.new_timer() timer:start(1000, 0, vim.schedule_wrap(function() @@ -471,7 +463,7 @@ wrapping.) Example: repeating timer 1. Save this code to a file. - 2. Execute it with ":luafile %". > + 2. Execute it with ":luafile %". >lua -- Create a timer handle (implementation detail: uv_timer_t). local timer = vim.loop.new_timer() @@ -492,7 +484,7 @@ Example: File-change detection *watch-file* 3. Use ":Watch %" to watch any file. 4. Try editing the file from another text editor. 5. Observe that the file reloads in Nvim (because on_change() calls - |:checktime|). > + |:checktime|). >lua local w = vim.loop.new_fs_event() local function on_change(err, fname, status) @@ -515,7 +507,7 @@ Example: TCP echo-server *tcp-server* 1. Save this code to a file. 2. Execute it with ":luafile %". 3. Note the port number. - 4. Connect from any TCP client (e.g. "nc 0.0.0.0 36795"): > + 4. Connect from any TCP client (e.g. "nc 0.0.0.0 36795"): >lua local function create_server(host, port, on_connect) local server = vim.loop.new_tcp() @@ -564,16 +556,16 @@ VIM.HIGHLIGHT *lua-highlight* Nvim includes a function for highlighting a selection on yank (see for example https://github.com/machakann/vim-highlightedyank). To enable it, add -> +>vim au TextYankPost * silent! lua vim.highlight.on_yank() < to your `init.vim`. You can customize the highlight group and the duration of the highlight via -> +>vim au TextYankPost * silent! lua vim.highlight.on_yank {higroup="IncSearch", timeout=150} < If you want to exclude visual selections from highlighting on yank, use -> +>vim au TextYankPost * silent! lua vim.highlight.on_yank {on_visual=false} < vim.highlight.on_yank({opts}) *vim.highlight.on_yank()* @@ -609,6 +601,7 @@ vim.highlight.priorities *vim.highlight.priorities* Table with default priorities used for highlighting: • `syntax`: `50`, used for standard syntax highlighting • `treesitter`: `100`, used for tree-sitter-based highlighting + • `semantic_tokens`: `125`, used for LSP semantic token highlighting • `diagnostics`: `150`, used for code analysis such as diagnostics • `user`: `200`, used for user-triggered highlights such as LSP document symbols or `on_yank` autocommands @@ -646,20 +639,19 @@ vim.diff({a}, {b}, {opts}) *vim.diff()* Run diff on strings {a} and {b}. Any indices returned by this function, either directly or via callback arguments, are 1-based. - Examples: > - + Examples: >lua vim.diff('a\n', 'b\nc\n') - => - @@ -1 +1,2 @@ - -a - +b - +c + -- => + -- @@ -1 +1,2 @@ + -- -a + -- +b + -- +c vim.diff('a\n', 'b\nc\n', {result_type = 'indices'}) - => - { - {1, 1, 1, 2} - } + -- => + -- { + -- {1, 1, 1, 2} + -- } < Parameters: ~ • {a} First string to compare @@ -677,6 +669,9 @@ vim.diff({a}, {b}, {opts}) *vim.diff()* • "unified": (default) String in unified format. • "indices": Array of hunk locations. Note: This option is ignored if `on_hunk` is used. + • `linematch` (boolean): Run linematch on the resulting hunks + from xdiff. Requires `result_type = indices`, ignored + otherwise. • `algorithm` (string): Diff algorithm to use. Values: • "myers" the default algorithm @@ -717,6 +712,22 @@ vim.mpack.decode({str}) *vim.mpack.decode* Decodes (or "unpacks") the msgpack-encoded {str} to a Lua object. ------------------------------------------------------------------------------ +VIM.JSON *lua-json* + +The *vim.json* module provides encoding and decoding of Lua objects to and +from JSON-encoded strings. Supports |vim.NIL| and |vim.empty_dict()|. + +vim.json.encode({obj}) *vim.json.encode* + Encodes (or "packs") Lua object {obj} as JSON in a Lua string. + +vim.json.decode({str}[, {opts}]) *vim.json.decode* + Decodes (or "unpacks") the JSON-encoded {str} to a Lua object. + + {opts} is a table with the key `luanil = { object: bool, array: bool }` + that controls whether `null` in JSON objects or arrays should be converted + to Lua `nil` instead of `vim.NIL`. + +------------------------------------------------------------------------------ VIM.SPELL *lua-spell* vim.spell.check({str}) *vim.spell.check()* @@ -727,13 +738,12 @@ vim.spell.check({str}) *vim.spell.check()* 'spellfile', 'spellcapcheck' and 'spelloptions' which can all be local to the buffer. Consider calling this with |nvim_buf_call()|. - Example: > - + Example: >lua vim.spell.check("the quik brown fox") - => - { - {'quik', 'bad', 4} - } + -- => + -- { + -- {'quik', 'bad', 5} + -- } < Parameters: ~ • {str} String to spell check. @@ -753,7 +763,7 @@ VIM *lua-builtin* vim.api.{func}({...}) *vim.api* Invokes Nvim |API| function {func} with arguments {...}. - Example: call the "nvim_get_current_line()" API function: > + Example: call the "nvim_get_current_line()" API function: >lua print(tostring(vim.api.nvim_get_current_line())) vim.version() *vim.version* @@ -878,7 +888,7 @@ vim.wait({time} [, {callback}, {interval}, {fast_only}]) *vim.wait()* If {callback} errors, the error is raised. - Examples: > + Examples: >lua --- -- Wait for 100 ms, allowing other events to process @@ -919,7 +929,7 @@ vim.ui_attach({ns}, {options}, {callback}) *vim.ui_attach()* used to handle messages when setting 'cmdheight' to zero (which is likewise experimental). - Example (stub for a |ui-popupmenu| implementation): > + Example (stub for a |ui-popupmenu| implementation): >lua ns = vim.api.nvim_create_namespace('my_fancy_pum') @@ -947,7 +957,7 @@ vim.type_idx *vim.type_idx* vim.val_idx *vim.val_idx* Value index for tables representing |Float|s. A table representing - floating-point value 1.0 looks like this: > + floating-point value 1.0 looks like this: >lua { [vim.type_idx] = vim.types.float, [vim.val_idx] = 1.0, @@ -994,7 +1004,7 @@ See also https://github.com/nanotee/nvim-lua-guide. vim.call({func}, {...}) *vim.call()* Invokes |vim-function| or |user-function| {func} with arguments {...}. See also |vim.fn|. - Equivalent to: > + Equivalent to: >lua vim.fn[func]({...}) vim.cmd({command}) @@ -1002,7 +1012,7 @@ vim.cmd({command}) vim.fn.{func}({...}) *vim.fn* Invokes |vim-function| or |user-function| {func} with arguments {...}. - To call autoload functions, use the syntax: > + To call autoload functions, use the syntax: >lua vim.fn['some#function']({...}) < Unlike vim.api.|nvim_call_function()| this converts directly between Vim @@ -1025,7 +1035,7 @@ from Lua conveniently and idiomatically by referencing the `vim.*` Lua tables described below. In this way you can easily read and modify global Vimscript variables from Lua. -Example: > +Example: >lua vim.g.foo = 5 -- Set the g:foo Vimscript variable. print(vim.g.foo) -- Get and print the g:foo Vimscript variable. @@ -1038,7 +1048,7 @@ Nvim. This is because the index into the namespace simply returns a copy. Instead the whole dictionary must be written as one. This can be achieved by creating a short-lived temporary. -Example: > +Example: >lua vim.g.my_dict.field1 = 'value' -- Does not work @@ -1073,7 +1083,7 @@ vim.env *vim.env* Environment variables defined in the editor session. See |expand-env| and |:let-environment| for the Vimscript behavior. Invalid or unset key returns `nil`. - Example: > + Example: >lua vim.env.FOO = 'bar' print(vim.env.TERM) < @@ -1107,7 +1117,7 @@ vim.o *vim.o* Note: this works on both buffer-scoped and window-scoped options using the current buffer and window. - Example: > + Example: >lua vim.o.cmdheight = 4 print(vim.o.columns) print(vim.o.foo) -- error: invalid key @@ -1120,7 +1130,7 @@ vim.go *vim.go* option value and thus is mostly useful for use with |global-local| options. - Example: > + Example: >lua vim.go.cmdheight = 4 print(vim.go.columns) print(vim.go.bar) -- error: invalid key @@ -1132,7 +1142,7 @@ vim.bo[{bufnr}] * Note: this is equivalent to both `:set` and `:setlocal`. - Example: > + Example: >lua local bufnr = vim.api.nvim_get_current_buf() vim.bo[bufnr].buflisted = true -- same as vim.bo.buflisted = true print(vim.bo.comments) @@ -1143,11 +1153,11 @@ vim.wo[{winid}] * Like `:set`. If [{winid}] is omitted then the current window is used. Invalid {winid} or key is an error. - Note: this does not access |local-options| (`:setlocal`) instead use: > + Note: this does not access |local-options| (`:setlocal`) instead use: >lua nvim_get_option_value(OPTION, { scope = 'local', win = winid }) nvim_set_option_value(OPTION, VALUE, { scope = 'local', win = winid } < - Example: > + Example: >lua local winid = vim.api.nvim_get_current_win() vim.wo[winid].number = true -- same as vim.wo.number = true print(vim.wo.foldmarker) @@ -1156,9 +1166,8 @@ vim.wo[{winid}] * - *lua-vim-opt* - *lua-vim-optlocal* - *lua-vim-optglobal* + *vim.opt_local* + *vim.opt_global* *vim.opt* @@ -1169,37 +1178,37 @@ offers object-oriented method for adding and removing entries. Examples: ~ The following methods of setting a list-style option are equivalent: - In Vimscript: - `set wildignore=*.o,*.a,__pycache__` - - In Lua using `vim.o`: - `vim.o.wildignore = '*.o,*.a,__pycache__'` - - In Lua using `vim.opt`: - `vim.opt.wildignore = { '*.o', '*.a', '__pycache__' }` - - To replicate the behavior of |:set+=|, use: > + In Vimscript: >vim + set wildignore=*.o,*.a,__pycache__ +< + In Lua using `vim.o`: >lua + vim.o.wildignore = '*.o,*.a,__pycache__' +< + In Lua using `vim.opt`: >lua + vim.opt.wildignore = { '*.o', '*.a', '__pycache__' } +< + To replicate the behavior of |:set+=|, use: >lua vim.opt.wildignore:append { "*.pyc", "node_modules" } < - To replicate the behavior of |:set^=|, use: > + To replicate the behavior of |:set^=|, use: >lua vim.opt.wildignore:prepend { "new_first_value" } < - To replicate the behavior of |:set-=|, use: > + To replicate the behavior of |:set-=|, use: >lua vim.opt.wildignore:remove { "node_modules" } < The following methods of setting a map-style option are equivalent: - In Vimscript: - `set listchars=space:_,tab:>~` - - In Lua using `vim.o`: - `vim.o.listchars = 'space:_,tab:>~'` - - In Lua using `vim.opt`: - `vim.opt.listchars = { space = '_', tab = '>~' }` - + In Vimscript: >vim + set listchars=space:_,tab:>~ +< + In Lua using `vim.o`: >lua + vim.o.listchars = 'space:_,tab:>~' +< + In Lua using `vim.opt`: >lua + vim.opt.listchars = { space = '_', tab = '>~' } +< Note that |vim.opt| returns an `Option` object, not the value of the option, which is accessed through |vim.opt:get()|: @@ -1207,15 +1216,15 @@ which is accessed through |vim.opt:get()|: Examples: ~ The following methods of getting a list-style option are equivalent: - In Vimscript: - `echo wildignore` - - In Lua using `vim.o`: - `print(vim.o.wildignore)` - - In Lua using `vim.opt`: - `vim.pretty_print(vim.opt.wildignore:get())` - + In Vimscript: >vim + echo wildignore +< + In Lua using `vim.o`: >lua + print(vim.o.wildignore) +< + In Lua using `vim.opt`: >lua + vim.pretty_print(vim.opt.wildignore:get()) +< In any of the above examples, to replicate the behavior |:setlocal|, use `vim.opt_local`. Additionally, to replicate the behavior of |:setglobal|, use @@ -1230,7 +1239,7 @@ Option:get() values will be returned in exactly the same fashion. For values that are comma-separated lists, an array will be returned with - the values as entries in the array: > + the values as entries in the array: >lua vim.cmd [[set wildignore=*.pyc,*.o]] vim.pretty_print(vim.opt.wildignore:get()) @@ -1243,7 +1252,7 @@ Option:get() -- Will ignore: *.o < For values that are comma-separated maps, a table will be returned with - the names as keys and the values as entries: > + the names as keys and the values as entries: >lua vim.cmd [[set listchars=space:_,tab:>~]] vim.pretty_print(vim.opt.listchars:get()) @@ -1254,7 +1263,7 @@ Option:get() end < For values that are lists of flags, a set will be returned with the flags - as keys and `true` as entries. > + as keys and `true` as entries. >lua vim.cmd [[set formatoptions=njtcroql]] vim.pretty_print(vim.opt.formatoptions:get()) @@ -1270,28 +1279,28 @@ Option:append(value) Append a value to string-style options. See |:set+=| - These are equivalent: - `vim.opt.formatoptions:append('j')` - `vim.opt.formatoptions = vim.opt.formatoptions + 'j'` - + These are equivalent: >lua + vim.opt.formatoptions:append('j') + vim.opt.formatoptions = vim.opt.formatoptions + 'j' +< *vim.opt:prepend()* Option:prepend(value) Prepend a value to string-style options. See |:set^=| - These are equivalent: - `vim.opt.wildignore:prepend('*.o')` - `vim.opt.wildignore = vim.opt.wildignore ^ '*.o'` - + These are equivalent: >lua + vim.opt.wildignore:prepend('*.o') + vim.opt.wildignore = vim.opt.wildignore ^ '*.o' +< *vim.opt:remove()* Option:remove(value) Remove a value from string-style options. See |:set-=| - These are equivalent: - `vim.opt.wildignore:remove('*.pyc')` - `vim.opt.wildignore = vim.opt.wildignore - '*.pyc'` - + These are equivalent: >lua + vim.opt.wildignore:remove('*.pyc') + vim.opt.wildignore = vim.opt.wildignore - '*.pyc' +< ============================================================================== Lua module: vim *lua-vim* @@ -1302,7 +1311,7 @@ cmd({command}) *vim.cmd()* Note that `vim.cmd` can be indexed with a command name to return a callable function to the command. - Example: > + Example: >lua vim.cmd('echo 42') vim.cmd([[ @@ -1436,7 +1445,7 @@ paste({lines}, {phase}) *vim.paste()* Paste handler, invoked by |nvim_paste()| when a conforming UI (such as the |TUI|) pastes text into the editor. - Example: To remove ANSI color codes when pasting: > + Example: To remove ANSI color codes when pasting: >lua vim.paste = (function(overridden) return function(lines, phase) @@ -1465,7 +1474,7 @@ paste({lines}, {phase}) *vim.paste()* |paste| @alias paste_phase -1 | 1 | 2 | 3 pretty_print({...}) *vim.pretty_print()* - Prints given arguments in human-readable format. Example: > + Prints given arguments in human-readable format. Example: >lua -- Print highlight group Normal and store it's contents in a variable. local hl_normal = vim.pretty_print(vim.api.nvim_get_hl_by_name("Normal", true)) < @@ -1490,8 +1499,7 @@ region({bufnr}, {pos1}, {pos2}, {regtype}, {inclusive}) *vim.region()* end-inclusive Return: ~ - table<integer, {}> region lua table of the form {linenr = - {startcol,endcol}} + (table) region Table of the form `{linenr = {startcol,endcol}}` schedule_wrap({cb}) *vim.schedule_wrap()* Defers callback `cb` until the Nvim API is safe to call. @@ -1508,6 +1516,56 @@ schedule_wrap({cb}) *vim.schedule_wrap()* |vim.in_fast_event()| +============================================================================== +Lua module: inspector *lua-inspector* + +inspect_pos({bufnr}, {row}, {col}, {filter}) *vim.inspect_pos()* + Get all the items at a given buffer position. + + Can also be pretty-printed with `:Inspect!`. *:Inspect!* + + Parameters: ~ + • {bufnr} (number|nil) defaults to the current buffer + • {row} (number|nil) row to inspect, 0-based. Defaults to the row of + the current cursor + • {col} (number|nil) col to inspect, 0-based. Defaults to the col of + the current cursor + • {filter} (table|nil) a table with key-value pairs to filter the items + • syntax (boolean): include syntax based highlight groups + (defaults to true) + • treesitter (boolean): include treesitter based highlight + groups (defaults to true) + • extmarks (boolean|"all"): include extmarks. When `all`, + then extmarks without a `hl_group` will also be included + (defaults to true) + • semantic_tokens (boolean): include semantic tokens + (defaults to true) + + Return: ~ + (table) a table with the following key-value pairs. Items are in + "traversal order": + • treesitter: a list of treesitter captures + • syntax: a list of syntax groups + • semantic_tokens: a list of semantic tokens + • extmarks: a list of extmarks + • buffer: the buffer used to get the items + • row: the row used to get the items + • col: the col used to get the items + +show_pos({bufnr}, {row}, {col}, {filter}) *vim.show_pos()* + Show all the items at a given buffer position. + + Can also be shown with `:Inspect`. *:Inspect* + + Parameters: ~ + • {bufnr} (number|nil) defaults to the current buffer + • {row} (number|nil) row to inspect, 0-based. Defaults to the row of + the current cursor + • {col} (number|nil) col to inspect, 0-based. Defaults to the col of + the current cursor + • {filter} (table|nil) see |vim.inspect_pos()| + + deep_equal({a}, {b}) *vim.deep_equal()* @@ -1544,10 +1602,11 @@ defaulttable({create}) *vim.defaulttable()* If {create} is `nil`, this will create a defaulttable whose constructor function is this function, effectively allowing to create nested tables on the fly: -> - local a = vim.defaulttable() - a.b.c = 1 + >lua + + local a = vim.defaulttable() + a.b.c = 1 < Parameters: ~ @@ -1573,7 +1632,7 @@ gsplit({s}, {sep}, {plain}) *vim.gsplit()* Parameters: ~ • {s} (string) String to split • {sep} (string) Separator or pattern - • {plain} (boolean) If `true` use `sep` literally (passed to + • {plain} (boolean|nil) If `true` use `sep` literally (passed to string.find) Return: ~ @@ -1581,6 +1640,7 @@ gsplit({s}, {sep}, {plain}) *vim.gsplit()* See also: ~ |vim.split()| + |luaref-patterns| https://www.lua.org/pil/20.2.html http://lua-users.org/wiki/StringLibraryTutorial @@ -1616,8 +1676,8 @@ list_slice({list}, {start}, {finish}) *vim.list_slice()* Parameters: ~ • {list} (list) Table - • {start} (number) Start range of slice - • {finish} (number) End range of slice + • {start} (number|nil) Start range of slice + • {finish} (number|nil) End range of slice Return: ~ (list) Copy of table sliced from start to finish (inclusive) @@ -1634,22 +1694,29 @@ pesc({s}) *vim.pesc()* See also: ~ https://github.com/rxi/lume +spairs({t}) *vim.spairs()* + Enumerate a table sorted by its keys. + + Parameters: ~ + • {t} (table) List-like table + + Return: ~ + iterator over sorted keys and their values + + See also: ~ + Based on https://github.com/premake/premake-core/blob/master/src/base/table.lua + split({s}, {sep}, {kwargs}) *vim.split()* Splits a string at each instance of a separator. - Examples: > + Examples: >lua - split(":aa::b:", ":") => {'','aa','','b',''} - split("axaby", "ab?") => {'','x','y'} - split("x*yz*o", "*", {plain=true}) => {'x','yz','o'} - split("|x|y|z|", "|", {trimempty=true}) => {'x', 'y', 'z'} + split(":aa::b:", ":") --> {'','aa','','b',''} + split("axaby", "ab?") --> {'','x','y'} + split("x*yz*o", "*", {plain=true}) --> {'x','yz','o'} + split("|x|y|z|", "|", {trimempty=true}) --> {'x', 'y', 'z'} < - @alias split_kwargs {plain: boolean, trimempty: boolean} | boolean | nil - - See also: ~ - |vim.gsplit()| - Parameters: ~ • {s} (string) String to split • {sep} (string) Separator or pattern @@ -1662,6 +1729,9 @@ split({s}, {sep}, {kwargs}) *vim.split()* Return: ~ string[] List of split components + See also: ~ + |vim.gsplit()| + startswith({s}, {prefix}) *vim.startswith()* Tests if `s` starts with `prefix`. @@ -1696,10 +1766,11 @@ tbl_contains({t}, {value}) *vim.tbl_contains()* tbl_count({t}) *vim.tbl_count()* Counts the number of non-nil values in table `t`. -> - vim.tbl_count({ a=1, b=2 }) => 2 - vim.tbl_count({ 1, 2 }) => 2 + >lua + + vim.tbl_count({ a=1, b=2 }) --> 2 + vim.tbl_count({ 1, 2 }) --> 2 < Parameters: ~ @@ -1772,7 +1843,7 @@ tbl_get({o}, {...}) *vim.tbl_get()* Index into a table (first argument) via string keys passed as subsequent arguments. Return `nil` if the key does not exist. - Examples: > + Examples: >lua vim.tbl_get({ key = { nested_key = true }}, 'key', 'nested_key') == true vim.tbl_get({ key = {}}, 'key', 'nested_key') == nil @@ -1854,12 +1925,13 @@ trim({s}) *vim.trim()* (string) String with whitespace removed from its beginning and end See also: ~ + |luaref-patterns| https://www.lua.org/pil/20.2.html validate({opt}) *vim.validate()* Validates a parameter specification (types and values). - Usage example: > + Usage example: >lua function user.new(name, age, hobbies) vim.validate{ @@ -1871,25 +1943,25 @@ validate({opt}) *vim.validate()* end < - Examples with explicit argument values (can be run directly): > + Examples with explicit argument values (can be run directly): >lua vim.validate{arg1={{'foo'}, 'table'}, arg2={'foo', 'string'}} - => NOP (success) + --> NOP (success) vim.validate{arg1={1, 'table'}} - => error('arg1: expected table, got number') + --> error('arg1: expected table, got number') vim.validate{arg1={3, function(a) return (a % 2) == 0 end, 'even number'}} - => error('arg1: expected even number, got 3') + --> error('arg1: expected even number, got 3') < - If multiple types are valid they can be given as a list. > + If multiple types are valid they can be given as a list. >lua vim.validate{arg1={{'foo'}, {'table', 'string'}}, arg2={'foo', {'table', 'string'}}} - => NOP (success) + --> NOP (success) vim.validate{arg1={1, {'string', table'}}} - => error('arg1: expected string|table, got number') + --> error('arg1: expected string|table, got number') < Parameters: ~ @@ -1958,7 +2030,7 @@ Lua module: ui *lua-ui* input({opts}, {on_confirm}) *vim.ui.input()* Prompts the user for input - Example: > + Example: >lua vim.ui.input({ prompt = 'Enter value for shiftwidth: ' }, function(input) vim.o.shiftwidth = tonumber(input) @@ -1977,12 +2049,13 @@ input({opts}, {on_confirm}) *vim.ui.input()* highlighting user inputs. • {on_confirm} (function) ((input|nil) -> ()) Called once the user confirms or abort the input. `input` is what the user - typed. `nil` if the user aborted the dialog. + typed (it might be an empty string if nothing was + entered), or `nil` if the user aborted the dialog. select({items}, {opts}, {on_choice}) *vim.ui.select()* Prompts the user to pick a single item from a collection of entries - Example: > + Example: >lua vim.ui.select({ 'tabs', 'spaces' }, { prompt = 'Select tabs or spaces:', @@ -2045,10 +2118,7 @@ add({filetypes}) *vim.filetype.add()* See $VIMRUNTIME/lua/vim/filetype.lua for more examples. - Note that Lua filetype detection is disabled when |g:do_legacy_filetype| - is set. - - Example: > + Example: >lua vim.filetype.add({ extension = { @@ -2084,7 +2154,7 @@ add({filetypes}) *vim.filetype.add()* }) < - To add a fallback match on contents (see |new-filetype-scripts|), use > + To add a fallback match on contents, use >lua vim.filetype.add { pattern = { @@ -2123,19 +2193,20 @@ match({args}) *vim.filetype.match()* Each of the three options is specified using a key to the single argument of this function. Example: -> - -- Using a buffer number - vim.filetype.match({ buf = 42 }) + >lua - -- Override the filename of the given buffer - vim.filetype.match({ buf = 42, filename = 'foo.c' }) + -- Using a buffer number + vim.filetype.match({ buf = 42 }) - -- Using a filename without a buffer - vim.filetype.match({ filename = 'main.lua' }) + -- Override the filename of the given buffer + vim.filetype.match({ buf = 42, filename = 'foo.c' }) - -- Using file contents - vim.filetype.match({ contents = {'#!/usr/bin/env bash'} }) + -- Using a filename without a buffer + vim.filetype.match({ filename = 'main.lua' }) + + -- Using file contents + vim.filetype.match({ contents = {'#!/usr/bin/env bash'} }) < Parameters: ~ @@ -2165,7 +2236,7 @@ match({args}) *vim.filetype.match()* Lua module: keymap *lua-keymap* del({modes}, {lhs}, {opts}) *vim.keymap.del()* - Remove an existing mapping. Examples: > + Remove an existing mapping. Examples: >lua vim.keymap.del('n', 'lhs') @@ -2181,7 +2252,7 @@ del({modes}, {lhs}, {opts}) *vim.keymap.del()* |vim.keymap.set()| set({mode}, {lhs}, {rhs}, {opts}) *vim.keymap.set()* - Add a new |mapping|. Examples: > + Add a new |mapping|. Examples: >lua -- Can add mapping to Lua functions vim.keymap.set('n', 'lhs', function() print("real lua function") end) @@ -2200,14 +2271,14 @@ set({mode}, {lhs}, {rhs}, {opts}) *vim.keymap.set()* vim.keymap.set('n', '[%', '<Plug>(MatchitNormalMultiBackward)') < - Note that in a mapping like: > + Note that in a mapping like: >lua vim.keymap.set('n', 'asdf', require('jkl').my_fun) < the `require('jkl')` gets evaluated during this call in order to access the function. If you want to avoid this cost at startup you can wrap it in a function, for - example: > + example: >lua vim.keymap.set('n', 'asdf', function() return require('jkl').my_fun() end) < @@ -2249,13 +2320,18 @@ basename({file}) *vim.fs.basename()* Return: ~ (string) Basename of {file} -dir({path}) *vim.fs.dir()* +dir({path}, {opts}) *vim.fs.dir()* Return an iterator over the files and directories located in {path} Parameters: ~ • {path} (string) An absolute or relative path to the directory to iterate over. The path is first normalized |vim.fs.normalize()|. + • {opts} table|nil Optional keyword arguments: + • depth: integer|nil How deep the traverse (default 1) + • skip: (fun(dir_name: string): boolean)|nil Predicate to + control traversal. Return false to stop searching the + current directory. Only useful when depth > 1 Return: ~ Iterator over files and directories in {path}. Each iteration yields @@ -2280,17 +2356,18 @@ find({names}, {opts}) *vim.fs.find()* searches are recursive and may search through many directories! If {stop} is non-nil, then the search stops when the directory given in {stop} is reached. The search terminates when {limit} (default 1) matches are found. - The search can be narrowed to find only files or or only directories by + The search can be narrowed to find only files or only directories by specifying {type} to be "file" or "directory", respectively. Parameters: ~ • {names} (string|table|fun(name: string): boolean) Names of the files and directories to find. Must be base names, paths and globs - are not supported. If a function it is called per file and - dir within the traversed directories to test if they match. + are not supported. The function is called per file and + directory within the traversed directories to test if they + match {names}. • {opts} (table) Optional keyword arguments: • path (string): Path to begin searching from. If omitted, - the current working directory is used. + the |current-directory| is used. • upward (boolean, default false): If true, search upward through parent directories. Otherwise, search through child directories (recursively). @@ -2298,13 +2375,14 @@ find({names}, {opts}) *vim.fs.find()* reached. The directory itself is not searched. • type (string): Find only files ("file") or directories ("directory"). If omitted, both files and directories that - match {name} are included. + match {names} are included. • limit (number, default 1): Stop the search after finding this many matches. Use `math.huge` to place no limit on the number of matches. Return: ~ - (table) The paths of all matching files or directories + (table) Normalized paths |vim.fs.normalize()| of all matching files or + directories normalize({path}) *vim.fs.normalize()* Normalize a path to a standard format. A tilde (~) character at the @@ -2312,16 +2390,16 @@ normalize({path}) *vim.fs.normalize()* backslash (\) characters are converted to forward slashes (/). Environment variables are also expanded. - Example: > + Examples: >lua - vim.fs.normalize('C:\Users\jdoe') - => 'C:/Users/jdoe' + vim.fs.normalize('C:\\Users\\jdoe') + --> 'C:/Users/jdoe' - vim.fs.normalize('~/src/neovim') - => '/home/jdoe/src/neovim' + vim.fs.normalize('~/src/neovim') + --> '/home/jdoe/src/neovim' - vim.fs.normalize('$XDG_CONFIG_HOME/nvim/init.vim') - => '/Users/jdoe/.config/nvim/init.vim' + vim.fs.normalize('$XDG_CONFIG_HOME/nvim/init.vim') + --> '/Users/jdoe/.config/nvim/init.vim' < Parameters: ~ @@ -2333,7 +2411,7 @@ normalize({path}) *vim.fs.normalize()* parents({start}) *vim.fs.parents()* Iterate over all the parents of the given file or directory. - Example: > + Example: >lua local root_dir for dir in vim.fs.parents(vim.api.nvim_buf_get_name(0)) do @@ -2354,4 +2432,44 @@ parents({start}) *vim.fs.parents()* Return: ~ (function) Iterator + +============================================================================== +Lua module: secure *lua-secure* + +read({path}) *vim.secure.read()* + Attempt to read the file at {path} prompting the user if the file should + be trusted. The user's choice is persisted in a trust database at + $XDG_STATE_HOME/nvim/trust. + + Parameters: ~ + • {path} (string) Path to a file to read. + + Return: ~ + (string|nil) The contents of the given file if it exists and is + trusted, or nil otherwise. + + See also: ~ + |:trust| + +trust({opts}) *vim.secure.trust()* + Manage the trust database. + + The trust database is located at |$XDG_STATE_HOME|/nvim/trust. + + Parameters: ~ + • {opts} (table) + • action (string): "allow" to add a file to the trust database + and trust it, "deny" to add a file to the trust database and + deny it, "remove" to remove file from the trust database + • path (string|nil): Path to a file to update. Mutually + exclusive with {bufnr}. Cannot be used when {action} is + "allow". + • bufnr (number|nil): Buffer number to update. Mutually + exclusive with {path}. + + Return: ~ + (boolean, string) success, msg: + • true and full path of target file if operation was successful + • false and error message on failure + vim:tw=78:ts=8:sw=4:sts=4:et:ft=help:norl: |