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coc.txt
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*coc-nvim.txt* LSP support for vim & neovim.
Version: 0.0.57
Author: Qiming Zhao <chemzqm at gmail.com>
License: MIT license
CONTENTS *coc-contents*
Introduction |coc-introduction|
Requirement |coc-requirement|
Install |coc-install|
Configuration |coc-configuration|
Completion |coc-completion|
LanguageServer |coc-languageserver|
Interface |coc-interface|
Keymappings |coc-key-mappings|
Variables |coc-variables|
Functions |coc-functions|
Commands |coc-commands|
Autocmds |coc-autocmds|
Highlights |coc-highlights|
List |coc-list|
List command |coc-list-command|
List configuration |coc-list-configuration|
List mappings |coc-list-mappings|
List sources |coc-list-sources|
Location |coc-list-location|
Extensions |coc-list-extensions|
Diagnostics |coc-list-diagnostics|
Outline |coc-list-outline|
Symbols |coc-list-symbols|
Services |coc-list-services|
Commands |coc-list-commands|
Links |coc-list-links|
Output |coc-list-output|
Sources |coc-list-completion-sources|
Lists |coc-list-lists|
Statusline support |coc-status|
Manual |coc-status-manual|
Airline |coc-status-airline|
Lightline |coc-status-lightline|
FAQ |coc-faq|
Changelog |coc-changelog|
==============================================================================
INTRODUCTION *coc-introduction*
Coc.nvim is created to make your (neo)vim have more intelligence like VSCode.
It can:~
- Provide APIs that work on both vim8 and neovim.
- Load VSCode like extensions.
- Configure coc.nvim and extensions by use jsonc configuration file.
- Configure language servers that implements LSP.
It's designed to work well with your other vim plugins as much as possible.
Note: unlike some of IDEs, it doesn't hijack your experience, you can turn
off any feature whenever you want.
==============================================================================
REQUIREMENT *coc-requirement*
Note: this plugin requires neovim >= 0.3.0 or vim >= 8.0.
Node: https://nodejs.org/en/download/ is required to run javascript code.
If those requirements are not satisfied, the plugin will not be loaded
at all.
==============================================================================
INSTALL *coc-install*
To use the [vim-plug](https://github.com/junegunn/vim-plug), add this: >
Plug 'neoclide/coc.nvim', {'branch': 'release'}
to your `init.vim` and run: >
:PlugInstall
For other plugin managers, use code from release branch.
Or use vim's buildin package feature like: >
#!/bin/sh
# for vim8
mkdir -p ~/.vim/pack/coc/start
cd ~/.vim/pack/coc/start
curl --fail -L https://github.com/neoclide/coc.nvim/archive/release.tar.gz|tar xzfv -
# for neovim
mkdir -p ~/.local/share/nvim/site/pack/coc/start
cd ~/.local/share/nvim/site/pack/coc/start
curl --fail -L https://github.com/neoclide/coc.nvim/archive/release.tar.gz|tar xzfv -
==============================================================================
CONFIGURATION *coc-configuration*
A JSONC formatted file named `coc-settings.json` is used for configuration.
Use the command |:CocConfig| to open the user configuration file, or create
`.vim/coc-settings.json` in your project root for folder-based configuration.
To enable completion and validation support of the settings file, install the
`coc-json` extension: `:CocInstall coc-json`.
Check out https://github.com/neoclide/coc.nvim/wiki/Using-the-configuration-file
for more details.
Builtin configurations:~
"http.proxy":~
HTTP proxy URI, used for extensions that send request, default: `""`
"http.proxyStrictSSL":~
default: `true`
"suggest.enablePreselect":~
Enable preselect feature on neovim, default: `true`
"suggest.maxPreviewWidth":~
Maximum width of floating preview window., default: `80`
"suggest.labelMaxLength":~
Maximum length of label shown in pum, default: `200`
"suggest.enablePreview":~
Add preview option to `completeopt`, default: `false`
"suggest.floatEnable"~
Enable floating window for documentation when possible, default: `true`
"suggest.detailMaxLength":~
Max length of detail that should be shown in popup menu., default:
`100`
"suggest.detailField":~
Where to add the detail in complete item when it's less than max
length., default: `"menu"`
Valid options: ["abbr","menu","preview"]
"suggest.autoTrigger":~
How should completion be triggered, default: `"always"`
Valid options: ["always","trigger","none"]
"suggest.languageSourcePriority":~
Priority of language sources., default: `99`
"suggest.numberSelect":~
Input number to select complete item, it could be wrong when
using <up> and <down> to select complete item, default: `false`
"suggest.disableKind":~
Remove kind field from vim complete item., default: `false`
"suggest.disableMenu":~
Remove menu field from vim complete item., default: `false`
"suggest.snippetIndicator":~
The character used in abbr of complete item to indicate the item could
be expand as snippet., default: `"~"`
"suggest.maxCompleteItemCount":~
Maximum number of complete items shown in vim, default: `50`
"suggest.preferCompleteThanJumpPlaceholder":~
Confirm completion instead of jump to next placeholder when completion
is activated., default: `false`
"suggest.fixInsertedWord":~
Make inserted word replace word characters after cursor position.,
default: `true`
"suggest.localityBonus":~
Boost suggestions that appear closer to the cursor position.,
default: `true`
"suggest.triggerAfterInsertEnter":~
Trigger completion after InsertEnter, auto trigger should be 'always'
to enable this option, default: `false`
"suggest.timeout":~
Timeout for completion, in milliseconds., default: `2000`
"suggest.minTriggerInputLength":~
Minimal input length that triggers completion, default 1, default: `1`
"suggest.triggerCompletionWait":~
Wait time between typing the trigger character and starting
completion, to wait for server content synchronization., default: `60`
"suggest.echodocSupport":~
When enabled, add function signature to `user_data.signature` to support
`echodoc.vim`, default: `false`
"suggest.acceptSuggestionOnCommitCharacter":~
Controls whether suggestions should be accepted on commit characters.
For example, in JavaScript, the semi-colon (`;`) can be a commit
character that accepts a suggestion and types that character. Requires
`CompleteChanged` event to work., default: `false`
"suggest.noselect":~
Prevent vim from selecting the first item on completion start, default: `true`
"suggest.keepCompleteopt":~
When enabled, `completeopt` is not overridden. Autocompletion will be
disabled if `completeopt` doesn't have `noinsert` and `noselect`., default:
`false`
"suggest.lowPrioritySourceLimit":~
Max items count for source priority lower than 90.
"suggest.highPrioritySourceLimit":~
Max items count for source priority bigger than or equal to 90.
"suggest.completionItemKindLabels":~
Set custom labels to completion items' kinds., default: `{}`.
Example configuration: with https://nerdfonts.com: >
"suggest.completionItemKindLabels": {
"keyword": "\uf1de",
"variable": "\ue79b",
"value": "\uf89f",
"operator": "\u03a8",
"function": "\u0192",
"reference": "\ufa46",
"constant": "\uf8fe",
"method": "\uf09a",
"struct": "\ufb44",
"class": "\uf0e8",
"interface": "\uf417",
"text": "\ue612",
"enum": "\uf435",
"enumMember": "\uf02b",
"module": "\uf40d",
"color": "\ue22b",
"property": "\ue624",
"field": "\uf9be",
"unit": "\uf475",
"event": "\ufacd",
"file": "\uf723",
"folder": "\uf114",
"snippet": "\ue60b",
"typeParameter": "\uf728",
"default": "\uf29c"
}
<
"diagnostic.enable":~
Set to false to disable diagnostic display, default: `true`
"diagnostic.level":~
Used for filter diagnostics by diagnostic severity., default:
`"hint"`
Valid options: ["hint","information","warning","error"]
"diagnostic.checkCurrentLine":~
When enabled, show all diagnostics of current line instead of current
position., default: `false`
"diagnostic.messageTarget":~
Diagnostic message target., default: `"float"`
Valid options: ["echo","float"]
"diagnostic.joinMessageLines":~
Join lines messages to reduce lines of floating window., default:
`false`
"diagnostic.refreshOnInsertMode":~
Enable diagnostic refresh on insert mode, default false., default:
`false`
"diagnostic.refreshAfterSave":~
Only refresh diagnostics after save, default false., default: `false`
"diagnostic.displayByAle":~
Use Ale for displaying diagnostics in vim. This will disable coc for
displaying diagnostics. Restart required on change., default: `false`
"diagnostic.virtualText":~
Use NeoVim virtual text to display diagnostics, default: `false`
"diagnostic.virtualTextPrefix":~
The prefix added virtual text diagnostics, default: `" "`
"diagnostic.virtualTextLines":~
The number of non-empty lines from a diagnostic to display, default:
`3`
"diagnostic.virtualTextLineSeparator":~
The text that will mark a line end from the diagnostic message,
default: `" \\ "`
"diagnostic.enableSign":~
Enable signs for diagnostics., default: `true`
"diagnostic.enableMessage":~
When to enable echo messages of diagnostics., default: `"always"`
Valid options: ["always","jump","never"]
"diagnostic.locationlist":~
Create location list for error & warning, default: `true`
"diagnostic.highlightOffset":~
Offset number of buffer.addHighlight, neovim only., default: `1000`
"diagnostic.signOffset":~
Offset number of sign, default: `1000`
"diagnostic.errorSign":~
Text of error sign, default: `">>"`
"diagnostic.warningSign":~
Text of warning sign, default: `"⚠"`
"diagnostic.infoSign":~
Text of info sign, default: `">>"`
"diagnostic.hintSign":~
Text of hint sign, default: `">>"`
"diagnostic.maxWindowHeight":~
Maximum height of diagnostics floating window., default: `8`
"signature.enable":~
Enable signature help when trigger character typed, require restart
service on change., default: `true`
"signature.triggerSignatureWait":~
Wait time for trigger signature, default: `50`.
Change to higher value if your language server is slow.
"signature.target":~
Target of signature help, use float when possible by default.
Valid options: ["float","echo"]
"signature.preferShownAbove":~
Show signature help float window above cursor when possible, require
restart service on change., default: `true`
"signature.hideOnTextChange":~
Hide signature float window when text changed, require restart service
on change., default: `false`
"signature.maxWindowHeight":~
Maximum height of floating signature help window., default: `8`
"codeLens.enable":~
Enable `codeLens` feature, require neovim with set virtual text
feature., default: `false`
"codeLens.separator":~
Separator text for `codeLens` in virtual text, default: `"‣"`
"workspace.ignoredFiletypes":~
Filetypes that should be ignored for resolve workspace folder.,
default: `["markdown","log","txt","help"]`
"list.indicator":~
The character used as first character in prompt line, default: `">"`
"list.maxHeight":~
Maximum height of list window., default: `10`
"list.signOffset":~
Sign offset of list, should be different from other plugins.,
default: `900`
"list.selectedSignText":~
Sign text for selected lines., default: `"*"`
"list.autoResize":~
Enable auto-resize feature., default: `true`
"list.limitLines":~
Limit lines for list buffer., default: `30000`
"list.maxPreviewHeight":~
Max height for preview window of list., default: `12`
"list.previewHighlightGroup":~
Highlight group used for highlight the range in preview window.,
default: `"Search"`
"list.nextKeymap":~
Key used for select next line on insert mode., default: `"<C-j>"`
"list.previousKeymap":~
Key used for select previous line on insert mode., default: `"<C-k>"`
"list.extendedSearchMode": ~
Enable extended search mode which allows multiple search patterns delimited by spaces.
"list.normalMappings":~
Custom keymappings on normal mode., default: `{}`
"list.insertMappings":~
Custom keymappings on insert mode., default: `{}`
"coc.preferences.useQuickfixForLocations":~
Use vim's quickfix list for jump locations, need restart on change.,
default: `false`
"coc.preferences.extensionUpdateCheck":~
Interval for check extension update, could be daily, weekly, never,
default: `"daily"`
Valid options: ["daily","weekly","never"]
"coc.preferences.snippetStatusText":~
Text shown in statusline to indicate snippet session is activated.,
default: `"SNIP"`
"coc.preferences.hoverTarget":~
Target to show hover information, default is floating window when
possible.
Valid options: ["preview","echo","float"]
"coc.preferences.colorSupport":~
Enable color highlight if language server support it., default:
`true`
"coc.preferences.previewAutoClose":~
Auto close preview window on cursor move., default: `true`
"coc.preferences.currentFunctionSymbolAutoUpdate":~
Automatically update the value of `b:coc_current_function` on
`CursorHold` event, default: `false`
"coc.preferences.formatOnSaveFiletypes":~
Filetypes that should run format on save., default: `[]`
"coc.preferences.enableFloatHighlight":~
Enable highlight for floating window., default: `true`
"coc.preferences.rootPatterns":~
Root patterns to resolve workspaceFolder from parent folders of opened
files, resolved from up to down., default:
`[".vim",".git",".hg",".projections.json"]`
"coc.preferences.watchmanPath":~
Executable path for https://facebook.github.io/watchman/, detected
from $PATH by default, default: `null`
"coc.preferences.jumpCommand":~
Command used for location jump, like goto definition, goto references
etc., default: `"edit"`
Valid options: ["edit","split","vsplit","tabe","drop","tab drop"]
"coc.preferences.messageLevel":~
Message level for filter echoed messages, could be 'more', 'warning'
and 'error', default: `"more"`
Valid options: ["more","warning","error"]
"coc.preferences.bracketEnterImprove":~
Improve handling of pressing enter inside brackets (`<> {} [] ()`) by
adding a new empty line below and moving the cursor to it. Works with
`coc#on_enter()`, default: `true`
"coc.preferences.formatOnType":~
Set to true to enable format on type, default: `false`
"coc.preferences.snippets.enable":~
Set to false to disable snippets support., default: `true`
"list.source.outline.ctagsFilestypes":~
Filetypes that should use `ctags` for outline instead of language
server., default: `[]`
"npm.binPath":~
Command or full path of npm or yarn executable for install/update
extenextensions, use `npm` by default.
"languageserver":~
Dictionary of languageservers, key is used as id of languageserver.,
default: `{}`
==============================================================================
COMPLETION *coc-completion*
Completion is triggered automatically by default, you can change completion
behavior in the configuration file.
Tips:~
- 'completeopt' used by coc.nvim default to `noselect,menuone`.
- Your 'completeopt' option would be changed and restored during completion,
so you can still use `menu,preview` for vim's builtin completion.
- Snippet expand and additional edit feature of LSP requires confirm
completion to work.
- Neovim 0.4.0 is required for floating window to work.
------------------------------------------------------------------------------
Example configuration:~
Map <tab> to trigger completion and navigate to the next item: >
function! s:check_back_space() abort
let col = col('.') - 1
return !col || getline('.')[col - 1] =~ '\s'
endfunction
inoremap <silent><expr> <TAB>
\ pumvisible() ? "\<C-n>" :
\ <SID>check_back_space() ? "\<TAB>" :
\ coc#refresh()
Map <c-space> to trigger completion: >
inoremap <silent><expr> <c-space> coc#refresh()
<
<CR> to confirm completion, use: >
inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<CR>"
<
To make <CR> auto-select the first completion item and notify coc.nvim to
format on enter, use: >
inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
\: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
Map <tab> for trigger completion, completion confirm, snippet expand and jump
like VSCode. >
inoremap <silent><expr> <TAB>
\ pumvisible() ? coc#_select_confirm() :
\ coc#expandableOrJumpable() ? "\<C-r>=coc#rpc#request('doKeymap', ['snippets-expand-jump',''])\<CR>" :
\ <SID>check_back_space() ? "\<TAB>" :
\ coc#refresh()
function! s:check_back_space() abort
let col = col('.') - 1
return !col || getline('.')[col - 1] =~# '\s'
endfunction
let g:coc_snippet_next = '<tab>'
<
Note: the `coc-snippets` extension is required for this to work.
==============================================================================
INTERFACE *coc-interface*
------------------------------------------------------------------------------
Coc doesn't come with a default global keymap, you need to configure the
mappings yourself.
Keymappings *coc-key-mappings*
Note: Mappings that start with `i_` works for insert mode `n_` works for
normal mode, `v_` works for visual mode.
<Plug>(coc-diagnostic-info) *n_coc-diagnostic-info*
Show diagnostic message of current position, no
truncate.
<Plug>(coc-diagnostic-next) *n_coc-diagnostic-next*
Jump to next diagnostic position.
<Plug>(coc-diagnostic-prev) *n_coc-diagnostic-prev*
Jump to previous diagnostic position.
<Plug>(coc-diagnostic-next-error) *n_coc-diagnostic-next-error*
Jump to next diagnostic error position.
<Plug>(coc-diagnostic-prev-error) *n_coc-diagnostic-prev-error*
Jump to previous diagnostic error position.
<Plug>(coc-definition) *n_coc-definition*
Jump to definition(s) of current symbol.
<Plug>(coc-declaration) *n_coc-declaration*
Jump to declaration(s) of current symbol.
<Plug>(coc-implementation) *n_coc-implementation*
Jump to implementation(s) of current symbol.
<Plug>(coc-type-definition) *n_coc-type-definition*
Jump to type definition(s) of current symbol.
<Plug>(coc-references) *n_coc-references*
Jump to references of current symbol.
<Plug>(coc-format-selected) *n_coc-format-selected*
*v_coc-format-selected*
Format selected range, would work in both visual mode
and normal mode, when used in normal mode, the
selection works on the motion object.
For example: >
vmap <leader>p <Plug>(coc-format-selected)
nmap <leader>p <Plug>(coc-format-selected)
<
makes `<leader>p` format the visually selected range, and you can use
`<leader>pap` to format a paragraph.
<Plug>(coc-format) *n_coc-format*
Format the whole buffer, normally you would like to
use a command like: >
command! -nargs=0 Format :call CocAction('format')
<
to format the current buffer.
<Plug>(coc-rename) *n_coc-rename*
Rename symbol under cursor to a new word.
<Plug>(coc-codeaction) *n_coc-codeaction*
Get and run code action(s) for current line.
<Plug>(coc-codeaction-selected) *n_coc-codeaction-selected*
*v_coc-codeaction-selected*
Get and run code action(s) with the selected region.
Works with both normal and visual mode.
<Plug>(coc-openlink) *n_coc-openlink*
Open link under cursor.
<Plug>(coc-codelens-action) *n_coc-codelens-action*
Do command from codeLens of current line.
<Plug>(coc-fix-current) *n_coc-fix-current*
Try to run quickfix action for diagnostics on the
current line.
<Plug>(coc-float-hide) *n_coc-float-hide*
Hide all float windows.
<Plug>(coc-float-jump) *n_coc-float-jump*
Jump to first float window.
<Plug>(coc-refactor) *n_coc-refactor*
Open refactor window for refactor of current symbol.
<Plug>(coc-range-select) *n_coc-range-select*
<Plug>(coc-range-select) *v_coc-range-select*
Select next selection range.
Note: requires selection ranges feature of language
server, like: coc-tsserver, coc-python
<Plug>(coc-range-select-backward) *v_coc-range-select-backward*
Select previous selection range.
Note: requires selection ranges feature of language
server, like: coc-tsserver, coc-python
<Plug>(coc-funcobj-i) *n_coc-funcobj-i* *v_coc-funcobj-i*
Select inside function, mapped to `if` by default.
<Plug>(coc-funcobj-a) *n_coc-funcobj-a* *v_coc-funcobj-a*
Select current function, mapped to `af` by default.
------------------------------------------------------------------------------
VARIABLES *coc-variables*
b:coc_enabled *b:coc_enabled*
Set to `0` on buffer create if you don't want
coc.nvim send buffer events for this buffer, including
buffer create, change and unload.
b:coc_root_patterns *b:coc_root_patterns*
Root patterns used for resolving workspaceFolder for
the current file, will be used instead of
`"coc.preferences.rootPatterns"` setting. E.g.: >
autocmd FileType python let b:coc_root_patterns =
\ ['.git', '.env']
<
b:coc_suggest_disable *b:coc_suggest_disable*
Disable completion support of current buffer. E.g.: >
" Disable completion for python
autocmd FileType python let b:coc_suggest_disable = 1
b:coc_suggest_blacklist *b:coc_suggest_blacklist*
Words for which completion should be disabled. E.g.: >
" Disable completion for 'end' in lua files
autocmd FileType lua let b:coc_suggest_blacklist = ["end"]
b:coc_additional_keywords *b:coc_additional_keywords*
Addition keyword characters for generate keywords. E.g.: >
" Add keyword characters for css
autocmd FileType css let b:coc_additional_keywords = ["-"]
b:coc_current_function *b:coc_current_function*
Function string that current cursor in.
Set `"coc.preferences.currentFunctionSymbolAutoUpdate": true`
in coc-settings.json to update it on CursorHold.
g:coc_last_hover_message *g:coc_last_hover_message*
Last message echoed from `doHover`, can be used in
statusline.
Note: not used when floating or preview window used
for `doHover`.
g:coc_start_at_startup *g:coc_start_at_startup*
Start coc service on startup, use |CocStart| to start
server when you set it to 0.
Default: 1
g:coc_user_config *g:coc_user_config*
User configuration object, define this variable when
you can't use |coc#config()|
g:coc_extension_root *g:coc_extension_root*
Location that coc extensions would be installed to,
empty to use default location:
Windows:
`~/AppData/Local/coc/extensions`
Other:
`~/.config/coc/extensions`
g:coc_global_extensions *g:coc_global_extensions*
Global extension names to install when they aren't
installed, define this variable to a list of extension
names when you can't use |coc#add_extension()|
g:coc_cygqwin_path_prefixes *g:coc_cygqwin_path_prefixes*
When running under cygwin, the node process will work
with win32 paths, while your vim process will work
with POSIX paths. You can use this map to map between
paths. For example, your root folder might be
`c:/Users/myUser/workspace` mapped in cygwin as
`/home/myUser/workspace`. In this situation, your node
process might send the `c:/Users/myUser/workspace`
path to your vim process. To solve this, you need to
define this map:
`let g:coc_cygqwin_path_prefixes = `
` \{'c:/Users/myUser': '/home/myUser'}`
g:coc_enable_locationlist *g:coc_enable_locationlist*
Open location list when location list changes.
Default: 1
g:coc_snippet_next *g:coc_snippet_next*
Trigger key for going to the next snippet position,
applied in insert and select mode.
Only works when snippet session is activated.
Default: <C-j>
g:coc_snippet_prev *g:coc_snippet_prev*
Trigger key for going to the previous snippet
position, applied in insert and select mode.
Only works when snippet session is activated.
Default: <C-k>
g:coc_filetype_map *g:coc_filetype_map*
Map for document filetypes so the server could handle
current document as another filetype, ex: >
let g:coc_filetype_map = {
\ 'html.swig': 'html',
\ 'wxss': 'css',
\ }
<
Default: {}
Note: coc will always map filetype `javascript.jsx` to
`javascriptreact` and `typescript.tsx` to
`typescriptreact`.
g:coc_selectmode_mapping *g:coc_selectmode_mapping*
Add key mappings for making snippet select mode
easier. >
snoremap <silent> <BS> <c-g>c
snoremap <silent> <DEL> <c-g>c
snoremap <silent> <c-h> <c-g>c
snoremap <c-r> <c-g>"_c<c-r>
<
Default: 1
g:coc_node_path *g:coc_node_path*
Path to node executable to start coc service. ex: >
let g:coc_node_path = '/usr/local/opt/node@10/bin/node'
<
Use this when coc has problems with your system node,
Note: you have to use `$HOME` as home directory.
g:coc_force_debug *g:coc_force_debug*
Coc would use the precompiled bundle when the bundle
file exists, set this to 1 to use compiled code instead
of bundle.
Default: 0
g:coc_node_args *g:coc_node_args*
Arguments passed to node when starting coc
service from source code.
Useful for starting coc in debug mode, ex: >
let g:coc_node_args = ['--nolazy', '--inspect-brk=6045']
<
Default: []
g:coc_jump_locations *g:coc_jump_locations*
This variable would be set to jump locations when the
|CocLocationsChange| autocmd is fired.
Each location item contains:
'filename': full file path.
'lnum': line number (1 based).
'col': column number(1 based).
'text': line content of location.
g:coc_process_pid *g:coc_process_pid*
Process pid of coc service.
g:coc_status_error_sign *g:coc_status_error_sign*
Error character used for statusline, default: `E`
g:coc_status_warning_sign *g:coc_status_warning_sign*
Warning character used for statusline, default: `W`
g:coc_watch_extensions *g:coc_watch_extensions*
Extensions to watch for reload, used for developing
extensions only, need watchman installed.
g:coc_quickfix_open_command *g:coc_quickfix_open_command*