Update README to help clarify config and source usage (#92)
* Update to README language/descriptions * Change pluralismsmsmsmsms :) Co-authored-by: alex.tylor <atylor@gmail.com>
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Alex Tylor
157
README.md
157
README.md
@@ -1,17 +1,19 @@
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# nvim-cmp
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A completion plugin for neovim coded in Lua.
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A completion engine plugin for neovim written in Lua.
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Completion sources are installed from external repositories and "sourced".
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Status
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====================
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can be used. feedbacks are wanted.
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Can be used. Feedback wanted!
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Concept
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====================
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- Provides a completion engine to handle completion sources
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- Support pairs-wise plugin automatically
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- Fully customizable via Lua functions
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- Fully supported LSP's Completion capabilities
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@@ -29,31 +31,54 @@ Concept
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Setup
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====================
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First, You should install nvim-cmp itself and completion sources by your favorite plugin manager.
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## Install
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The `nvim-cmp` sources can be found in [here](https://github.com/topics/nvim-cmp).
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First, You should install `nvim-cmp` itself and completion sources by your
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favourite plugin manager.
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The `nvim-cmp` sources can be found in
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[here](https://github.com/topics/nvim-cmp).
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Using [vim-plug](https://github.com/junegunn/vim-plug):
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```viml
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" Install nvim-cmp
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Plug 'hrsh7th/nvim-cmp'
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" Install the buffer completion source
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Plug 'hrsh7th/cmp-buffer'
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Plug 'hrsh7th/cmp-nvim-lua'
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```
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Then setup configuration.
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Using [packer.nvim](https://github.com/wbthomason/packer.nvim):
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```lua
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-- Install nvim-cmp, and buffer source as a dependency
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use {
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"hrsh7th/nvim-cmp",
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requires = {
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"hrsh7th/cmp-buffer",
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}
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}
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```
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## Basic Configuration
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To use `nvim-cmp` with the default configuration:
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```viml
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lua <<EOF
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local cmp = require'cmp'.setup()
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EOF
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```
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The default configuration can be found in [here](./lua/cmp/config/default.lua)
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To configure with suggested key mappings and the `hrsh7th/cmp-buffer` source:
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```viml
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" Setup global configuration. More on configuration below.
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lua <<EOF
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local cmp = require('cmp')
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cmp.setup {
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snippet = {
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expand = function(args)
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-- You must install `vim-vsnip` if you use the following as-is.
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vim.fn['vsnip#anonymous'](args.body)
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end
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},
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-- You can set mapping if you want.
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-- You can set mappings if you want
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mapping = {
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['<C-p>'] = cmp.mapping.select_prev_item(),
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['<C-n>'] = cmp.mapping.select_next_item(),
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@@ -74,30 +99,29 @@ lua <<EOF
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}
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EOF
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" Setup buffer configuration (nvim-lua source only enables in Lua filetype).
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autocmd FileType lua lua require'cmp'.setup.buffer {
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\ sources = {
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\ { name = 'buffer' },
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\ { name = 'nvim_lua' },
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\ },
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\ }
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```
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Configuration
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Avanced Configuration
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====================
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The default configuration can be found in [here](./lua/cmp/config/default.lua)
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You can use your own configuration like this:
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```lua
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```viml
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lua <<EOF
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local cmp = require'cmp'
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cmp.setup {
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...
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completion = {
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autocomplete = { ... },
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},
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...
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snippet = {
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...
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},
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...
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preselect = ...,
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...
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documentation = {
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...
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},
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...
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sorting = {
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priority_weight = 2.,
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comparators = { ... },
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@@ -108,13 +132,22 @@ cmp.setup {
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sources = { ... },
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...
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}
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EOF
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```
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#### mapping (type: table<string, fun(fallback: function)>)
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Define mappings with `cmp.mapping` helper.
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Built in helper `cmd.mappings` are:
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You can use the following functions as mapping configuration like this.
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- *cmp.mapping.select_prev_item()*
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- *cmp.mapping.select_next_item()*
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- *cmp.mapping.scroll_docs(number)*
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- *cmp.mapping.complete()*
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- *cmp.mapping.close()*
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- *cmp.mapping.abort()*
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- *cmp.mapping.confirm({ select = bool, behavior = cmp.ConfirmBehavior.{Insert,Replace} })*
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You can configure `nvim-cmp` to use these `cmd.mappings` like this:
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```lua
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mapping = {
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@@ -131,15 +164,7 @@ mapping = {
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}
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```
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- *cmp.mapping.select_prev_item()*
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- *cmp.mapping.select_next_item()*
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- *cmp.mapping.scroll_docs(number)*
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- *cmp.mapping.complete()*
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- *cmp.mapping.close()*
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- *cmp.mapping.abort()*
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- *cmp.mapping.confirm({ select = bool, behavior = cmp.ConfirmBehavior.{Insert,Replace} })*
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In addition, You can specify vim's mode to those mapping functions.
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In addition, the mapping mode can be specified. The default is insert mode (i).
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```lua
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mapping = {
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@@ -149,7 +174,7 @@ mapping = {
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}
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```
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You can specify your custom mapping function.
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You can specify your own custom mapping function.
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```lua
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mapping = {
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@@ -165,24 +190,51 @@ mapping = {
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}
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```
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#### sources (type: table<string>)
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Globals source lists are listed in the `source` table. These are applied to all
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buffers. The order of the sources list helps define the source priority, see
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the *sorting.priority_weight* options below.
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It is possible to setup different source lists for different filetypes, this is
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an example using the `FileType` autocommand to setup different sources for the
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lua filetype.
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```viml
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" Setup buffer configuration (nvim-lua source only enables in Lua filetype).
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autocmd FileType lua lua require'cmp'.setup.buffer {
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\ sources = {
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\ { name = 'buffer' },
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\ { name = 'nvim_lua' },
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\ },
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\ }
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```
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Note that the source name isn't necessarily the source repository name.
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Source names are defined in the source repository README files. For
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example look at the [hrsh7th/cmp-buffer](https://github.com/hrsh7th/cmp-buffer)
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source README which defines the source name as `buffer`.
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#### completion.autocomplete (type: cmp.TriggerEvent[])
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Which events should trigger `autocompletion`.
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If you leave this empty or `nil`, `nvim-cmp` does not perform completion automatically.
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You can still use manual completion though (like omni-completion).
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If you set this to empty or `nil`, `nvim-cmp` will not perform completion
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automatically. You can still use manual completion though (like omni-completion
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via the `cmp.mapping.complete` function).
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Default: `{ types.cmp.TriggerEvent.TextChanged }`
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#### completion.keyword_pattern (type: string)
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The default keyword pattern. This value will be used if a source does not set a source specific pattern.
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The default keyword pattern. This value will be used if a source does not set
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a source specific pattern.
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Default: `[[\%(-\?\d\+\%(\.\d\+\)\?\|\h\w*\%(-\w*\)*\)]]`
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#### completion.keyword_length (type: number)
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The minimal length of a word to complete; e.g., do not try to complete when the
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The minimum length of a word to complete on; e.g., do not try to complete when the
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length of the word to the left of the cursor is less than `keyword_length`.
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Default: `1`
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@@ -205,7 +257,7 @@ A documentation configuration or false to disable feature.
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#### documentation.border (type: string[])
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A border characters for documentation window.
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Border characters used for documentation window.
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#### documentation.winhighlight (type: string)
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@@ -213,11 +265,11 @@ A neovim's `winhighlight` option for documentation window.
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#### documentation.maxwidth (type: number)
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A documentation window's max width.
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The documentation window's max width.
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#### documentation.maxheight (type: number)
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A documentation window's max height.
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The documentation window's max height.
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#### confirmation.default_behavior (type: cmp.ConfirmBehavior)
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@@ -231,7 +283,6 @@ Specify deprecated candidate should be marked as deprecated or not.
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Default: `true`
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#### formatting.format (type: fun(entry: cmp.Entry, vim_item: vim.CompletedItem): vim.CompletedItem)
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A function to customize completion menu.
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@@ -294,7 +345,7 @@ Default:
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Specify preselect mode. The following modes are available.
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- cmp.Preselect.Item
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- If the item has `preselect = true`, nvim-cmp will preselect it.
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- If the item has `preselect = true`, `nvim-cmp` will preselect it.
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- cmp.Preselect.None
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- Disable preselect feature.
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@@ -330,7 +381,7 @@ cmp.setup {
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#### nvim-cmp is slow.
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I've optimized nvim-cmp as much as possible, but there are currently some known / unfixable issues.
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I've optimized `nvim-cmp` as much as possible, but there are currently some known / unfixable issues.
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1. `cmp-buffer` source and too large buffer
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@@ -20,7 +20,7 @@ return function()
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snippet = {
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expand = function()
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error('snippet engine does not configured.')
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error('snippet engine is not configured.')
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end,
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},
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