diff options
Diffstat (limited to 'runtime/doc/lua.txt')
| -rw-r--r-- | runtime/doc/lua.txt | 186 |
1 files changed, 183 insertions, 3 deletions
diff --git a/runtime/doc/lua.txt b/runtime/doc/lua.txt index be01966d42..f8d7a4e7c5 100644 --- a/runtime/doc/lua.txt +++ b/runtime/doc/lua.txt @@ -912,9 +912,167 @@ vim.env *vim.env* print(vim.env.TERM) < - *lua-vim-options* -From Lua you can work with editor |options| by reading and setting items in -these Lua tables: + *lua-vim-options* + *lua-vim-opt* + *lua-vim-set* + *lua-vim-optlocal* + *lua-vim-setlocal* + +In vimL, there is a succint and simple way to set options. For more +information, see |set-option|. In Lua, the corresponding method is `vim.opt`. + +`vim.opt` provides several conveniences for setting and controlling options +from within Lua. + + Examples: ~ + + To set a boolean toggle: + In vimL: + `set number` + + In Lua: + `vim.opt.number = true` + + To set an array of values: + In vimL: + `set wildignore=*.o,*.a,__pycache__` + + In Lua, there are two ways you can do this now. One is very similar to + the vimL way: + `vim.opt.wildignore = '*.o,*.a,__pycache__'` + + However, vim.opt also supports a more elegent way of setting + list-style options, but using lua tables: + `vim.opt.wildignore = { '*.o', '*.a', '__pycache__' }` + + To replicate the behavior of |:set+=|, use: > + + -- vim.opt supports appending options via the "+" operator + vim.opt.wildignore = vim.opt.wildignore + { "*.pyc", "node_modules" } + + -- or using the `:append(...)` method + vim.opt.wildignore:append { "*.pyc", "node_modules" } +< + + To replicate the behavior of |:set^=|, use: > + + -- vim.opt supports prepending options via the "^" operator + vim.opt.wildignore = vim.opt.wildignore ^ { "new_first_value" } + + -- or using the `:prepend(...)` method + vim.opt.wildignore:prepend { "new_first_value" } +< + To replicate the behavior of |:set-=|, use: > + + -- vim.opt supports removing options via the "-" operator + vim.opt.wildignore = vim.opt.wildignore - { "node_modules" } + + -- or using the `:remove(...)` method + vim.opt.wildignore:remove { "node_modules" } +< + To set a map of values: + In vimL: + `set listchars=space:_,tab:>~` + + In Lua: + `vim.opt.listchars = { space = '_', tab = '>~' }` + + +In any of the above examples, to replicate the behavior |setlocal|, use +`vim.opt_local`. Additionally, to replicate the behavior of |setglobal|, use +`vim.opt_global`. + *vim.opt* + +|vim.opt| returns an Option object. + +For example: `local listchar_object = vim.opt.listchar` + +An `Option` has the following methods: + + + *vim.opt:get()* +Option:get() + + Returns a lua-representation of the option. Boolean, number and string + 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: > + vim.cmd [[set wildignore=*.pyc,*.o]] + + print(vim.inspect(vim.opt.wildignore:get())) + -- { "*.pyc", "*.o", } + + for _, ignore_pattern in ipairs(vim.opt.wildignore:get()) do + print("Will ignore:", ignore_pattern) + end + -- Will ignore: *.pyc + -- 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: > + vim.cmd [[set listchars=space:_,tab:>~]] + + print(vim.inspect(vim.opt.listchars:get())) + -- { space = "_", tab = ">~", } + + for char, representation in pairs(vim.opt.listchars:get()) do + print(char, "->", representation) + end +< + For values that are lists of flags, a set will be returned with the flags + as keys and `true` as entries. > + vim.cmd [[set formatoptions=njtcroql]] + + print(vim.inspect(vim.opt.formatoptions:get())) + -- { n = true, j = true, c = true, ... } + + local format_opts = vim.opt.formatoptions:get() + if format_opts.j then + print("J is enabled!") + end +< + *vim.opt:append()* +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'` + + *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'` + + *vim.opt:remove()* +Option:remove(value) + + Remove a value to string-style options. See |:set-=| + + These are equivalent: + `vim.opt.wildignore:remove('*.pyc')` + `vim.opt.wildignore = vim.opt.wildignore - '*.pyc'` + + +In general, using `vim.opt` will provide the expected result when the user is +used to interacting with editor |options| via `set`. There are still times +where the user may want to set particular options via a shorthand in Lua, +which is where |vim.o|, |vim.bo|, |vim.wo|, and |vim.go| come into play. + +The behavior of |vim.o|, |vim.bo|, |vim.wo|, and |vim.go| is designed to +follow that of |:set|, |:setlocal|, and |:setglobal| which can be seen in the +table below: + + lua command global_value local_value ~ +vim.o :set set set +vim.bo/vim.wo :setlocal - set +vim.go :setglobal set - vim.o *vim.o* Get or set editor options, like |:set|. Invalid key is an error. @@ -922,14 +1080,36 @@ vim.o *vim.o* vim.o.cmdheight = 4 print(vim.o.columns) + +vim.go *vim.go* + Get or set an |option|. Invalid key is an error. + + This is a wrapper around |nvim_set_option()| and |nvim_get_option()|. + + NOTE: This is different than |vim.o| because this ONLY sets the global + option, which generally produces confusing behavior for options with + |global-local| values. + + Example: > + vim.go.cmdheight = 4 +< + vim.bo *vim.bo* Get or set buffer-scoped |local-options|. Invalid key is an error. + + This is a wrapper around |nvim_buf_set_option()| and + |nvim_buf_get_option()|. + Example: > vim.bo.buflisted = true print(vim.bo.comments) vim.wo *vim.wo* Get or set window-scoped |local-options|. Invalid key is an error. + + This is a wrapper around |nvim_win_set_option()| and + |nvim_win_get_option()|. + Example: > vim.wo.cursorcolumn = true print(vim.wo.foldmarker) |