diff options
Diffstat (limited to 'runtime/doc/lua.txt')
| -rw-r--r-- | runtime/doc/lua.txt | 218 |
1 files changed, 199 insertions, 19 deletions
diff --git a/runtime/doc/lua.txt b/runtime/doc/lua.txt index 036454702b..80c1f58323 100644 --- a/runtime/doc/lua.txt +++ b/runtime/doc/lua.txt @@ -249,13 +249,15 @@ arguments separated by " " (space) instead of "\t" (tab). *:lua* :[range]lua {chunk} Executes Lua chunk {chunk}. - + if {chunk} starts with "=" the rest of the chunk is + evaluated as an expression and printed. `:lua =expr` + is equivalent to `:lua print(vim.inspect(expr))` Examples: > :lua vim.api.nvim_command('echo "Hello, Nvim!"') < To see the Lua version: > :lua print(_VERSION) < To see the LuaJIT version: > - :lua print(jit.version) + :lua =jit.version < *:lua-heredoc* :[range]lua << [endmarker] @@ -272,7 +274,7 @@ arguments separated by " " (space) instead of "\t" (tab). lua << EOF local linenr = vim.api.nvim_win_get_cursor(0)[1] local curline = vim.api.nvim_buf_get_lines( - 0, linenr, linenr + 1, false)[1] + 0, linenr - 1, linenr, false)[1] print(string.format("Current line [%d] has %d bytes", linenr, #curline)) EOF @@ -1238,19 +1240,32 @@ inspect({object}, {options}) *vim.inspect()* https://github.com/kikito/inspect.lua https://github.com/mpeterv/vinspect -notify({msg}, {log_level}, {opts}) *vim.notify()* - Notification provider +notify({msg}, {level}, {opts}) *vim.notify()* + Display a notification to the user. - Without a runtime, writes to :Messages + This function can be overridden by plugins to display + notifications using a custom provider (such as the system + notification provider). By default, writes to |:messages|. Parameters: ~ - {msg} string Content of the notification to show to - the user - {log_level} number|nil enum from vim.log.levels - {opts} table|nil additional options (timeout, etc) + {msg} string Content of the notification to show to the + user. + {level} number|nil One of the values from + |vim.log.levels|. + {opts} table|nil Optional parameters. Unused by default. - See also: ~ - :help nvim_notify +notify_once({msg}, {level}, {opts}) *vim.notify_once()* + Display a notification only one time. + + Like |vim.notify()|, but subsequent calls with the same + message will not display a notification. + + Parameters: ~ + {msg} string Content of the notification to show to the + user. + {level} number|nil One of the values from + |vim.log.levels|. + {opts} table|nil Optional parameters. Unused by default. on_key({fn}, {ns_id}) *vim.on_key()* Adds Lua function {fn} with namespace id {ns_id} as a listener @@ -1314,6 +1329,18 @@ paste({lines}, {phase}) *vim.paste()* See also: ~ |paste| +pretty_print({...}) *vim.pretty_print()* + Prints given arguments in human-readable format. Example: > + -- 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)) +< + + Return: ~ + given arguments. + + See also: ~ + |vim.inspect()| + region({bufnr}, {pos1}, {pos2}, {regtype}, {inclusive}) *vim.region()* Get a table of lines with start, end columns for a region marked by two points @@ -1656,16 +1683,25 @@ validate({opt}) *vim.validate()* => error('arg1: expected even number, got 3') < + If multiple types are valid they can be given as a list. > + + vim.validate{arg1={{'foo'}, {'table', 'string'}}, arg2={'foo', {'table', 'string'}}} + => NOP (success) + + vim.validate{arg1={1, {'string', table'}}} + => error('arg1: expected string|table, got number') +< + Parameters: ~ - {opt} Map of parameter names to validations. Each key is - a parameter name; each value is a tuple in one of - these forms: + {opt} table of parameter names to validations. Each key + is a parameter name; each value is a tuple in one + of these forms: 1. (arg_value, type_name, optional) • arg_value: argument value - • type_name: string type name, one of: ("table", - "t", "string", "s", "number", "n", "boolean", - "b", "function", "f", "nil", "thread", - "userdata") + • type_name: string|table type name, one of: + ("table", "t", "string", "s", "number", "n", + "boolean", "b", "function", "f", "nil", + "thread", "userdata") or list of them. • optional: (optional) boolean, if true, `nil` is valid @@ -1769,4 +1805,148 @@ select({items}, {opts}, {on_choice}) *vim.ui.select()* 1-based index of `item` within `item` . `nil` if the user aborted the dialog. + +============================================================================== +Lua module: filetype *lua-filetype* + +add({filetypes}) *vim.filetype.add()* + Add new filetype mappings. + + Filetype mappings can be added either by extension or by + filename (either the "tail" or the full file path). The full + file path is checked first, followed by the file name. If a + match is not found using the filename, then the filename is + matched against the list of patterns (sorted by priority) + until a match is found. Lastly, if pattern matching does not + find a filetype, then the file extension is used. + + The filetype can be either a string (in which case it is used + as the filetype directly) or a function. If a function, it + takes the full path and buffer number of the file as arguments + (along with captures from the matched pattern, if any) and + should return a string that will be used as the buffer's + filetype. + + Filename patterns can specify an optional priority to resolve + cases when a file path matches multiple patterns. Higher + priorities are matched first. When omitted, the priority + defaults to 0. + + See $VIMRUNTIME/lua/vim/filetype.lua for more examples. + + Note that Lua filetype detection is only enabled when + |g:do_filetype_lua| is set to 1. + + Example: > + + vim.filetype.add({ + extension = { + foo = "fooscript", + bar = function(path, bufnr) + if some_condition() then + return "barscript" + end + return "bar" + end, + }, + filename = { + [".foorc"] = "toml", + ["/etc/foo/config"] = "toml", + }, + pattern = { + [".*‍/etc/foo/.*"] = "fooscript", + -- Using an optional priority + [".*‍/etc/foo/.*%.conf"] = { "dosini", { priority = 10 } }, + ["README.(%a+)$"] = function(path, bufnr, ext) + if ext == "md" then + return "markdown" + elseif ext == "rst" then + return "rst" + end + end, + }, + }) +< + + Parameters: ~ + {filetypes} table A table containing new filetype maps + (see example). + + +============================================================================== +Lua module: keymap *lua-keymap* + +del({modes}, {lhs}, {opts}) *vim.keymap.del()* + Remove an existing mapping. Examples: > + + vim.keymap.del('n', 'lhs') + + vim.keymap.del({'n', 'i', 'v'}, '<leader>w', { buffer = 5 }) +< + + Parameters: ~ + {opts} table A table of optional arguments: + • buffer: (number or boolean) Remove a mapping + from the given buffer. When "true" or 0, use the + current buffer. + + See also: ~ + |vim.keymap.set()| + +set({mode}, {lhs}, {rhs}, {opts}) *vim.keymap.set()* + Add a new |mapping|. Examples: > + + -- Can add mapping to Lua functions + vim.keymap.set('n', 'lhs', function() print("real lua function") end) + + -- Can use it to map multiple modes + vim.keymap.set({'n', 'v'}, '<leader>lr', vim.lsp.buf.references, { buffer=true }) + + -- Can add mapping for specific buffer + vim.keymap.set('n', '<leader>w', "<cmd>w<cr>", { silent = true, buffer = 5 }) + + -- Expr mappings + vim.keymap.set('i', '<Tab>', function() + return vim.fn.pumvisible() == 1 and "<C-n>" or "<Tab>" + end, { expr = true }) + -- <Plug> mappings + vim.keymap.set('n', '[%', '<Plug>(MatchitNormalMultiBackward)') +< + + Note that in a mapping like: > + + 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: > + + vim.keymap.set('n', 'asdf', function() return require('jkl').my_fun() end) +< + + Parameters: ~ + {mode} string|table Same mode short names as + |nvim_set_keymap()|. Can also be list of modes to + create mapping on multiple modes. + {lhs} string Left-hand side |{lhs}| of the mapping. + {rhs} string|function Right-hand side |{rhs}| of the + mapping. Can also be a Lua function. + {opts} table A table of |:map-arguments| such as + "silent". In addition to the options listed in + |nvim_set_keymap()|, this table also accepts the + following keys: + • replace_keycodes: (boolean, default true) When + both this and expr is "true", + |nvim_replace_termcodes()| is applied to the + result of Lua expr maps. + • remap: (boolean) Make the mapping recursive. + This is the inverse of the "noremap" option from + |nvim_set_keymap()|. Default `true` if `lhs` is + a string starting with `<plug>` + (case-insensitive), `false` otherwise. + + See also: ~ + |nvim_set_keymap()| + vim:tw=78:ts=8:ft=help:norl: |