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+" TextEdit might fail if hidden is not set.
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+set hidden
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+
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+" Some servers have issues with backup files, see #649.
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+set nobackup
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+set nowritebackup
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+
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+" Give more space for displaying messages.
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+set cmdheight=2
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+
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+" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
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+" delays and poor user experience.
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+set updatetime=300
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+
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+" Don't pass messages to |ins-completion-menu|.
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+set shortmess+=c
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+
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+" Always show the signcolumn, otherwise it would shift the text each time
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+" diagnostics appear/become resolved.
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+set signcolumn=yes
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+
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+"better nav for omnicomplete
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+inoremap <expr> <c-j> ("\<C-n>")
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+inoremap <expr> <c-k> ("\<C-p>")
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+
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+" Use tab for trigger completion with characters ahead and navigate.
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+" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
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+" other plugin before putting this into your config.
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+inoremap <silent><expr> <TAB>
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+ \ pumvisible() ? "\<C-n>" :
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+ \ <SID>check_back_space() ? "\<TAB>" :
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+ \ coc#refresh()
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+inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"
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+
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+function! s:check_back_space() abort
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+ let col = col('.') - 1
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+ return !col || getline('.')[col - 1] =~# '\s'
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+endfunction
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+
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+" Use <c-space> to trigger completion.
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+inoremap <silent><expr> <c-space> coc#refresh()
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+
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+" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current
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+" position. Coc only does snippet and additional edit on confirm.
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+if has('patch8.1.1068')
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+ " Use `complete_info` if your (Neo)Vim version supports it.
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+ inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
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+else
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+ imap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
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+endif
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+
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+" Use `[g` and `]g` to navigate diagnostics
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+nmap <silent> [g <Plug>(coc-diagnostic-prev)
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+nmap <silent> ]g <Plug>(coc-diagnostic-next)
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+
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+" GoTo code navigation.
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+nmap <silent> gd <Plug>(coc-definition)
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+nmap <silent> gy <Plug>(coc-type-definition)
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+nmap <silent> gi <Plug>(coc-implementation)
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+nmap <silent> gr <Plug>(coc-references)
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+
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+" Use K to show documentation in preview window.
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+nnoremap <silent> K :call <SID>show_documentation()<CR>
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+
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+function! s:show_documentation()
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+ if (index(['vim','help'], &filetype) >= 0)
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+ execute 'h '.expand('<cword>')
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+ else
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+ call CocAction('doHover')
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+ endif
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+endfunction
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+
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+" Highlight the symbol and its references when holding the cursor.
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+autocmd CursorHold * silent call CocActionAsync('highlight')
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+
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+" Symbol renaming.
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+nmap <leader>rn <Plug>(coc-rename)
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+
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+" Formatting selected code.
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+xmap <leader>f <Plug>(coc-format-selected)
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+nmap <leader>f <Plug>(coc-format-selected)
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+
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+augroup mygroup
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+ autocmd!
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+ " Setup formatexpr specified filetype(s).
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+ autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
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+ " Update signature help on jump placeholder.
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+ autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
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+augroup end
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+
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+" Applying codeAction to the selected region.
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+" Example: `<leader>aap` for current paragraph
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+xmap <leader>a <Plug>(coc-codeaction-selected)
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+nmap <leader>a <Plug>(coc-codeaction-selected)
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+
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+" Remap keys for applying codeAction to the current line.
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+nmap <leader>ac <Plug>(coc-codeaction)
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+" Apply AutoFix to problem on the current line.
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+nmap <leader>qf <Plug>(coc-fix-current)
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+
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+" Introduce function text object
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+" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
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+xmap if <Plug>(coc-funcobj-i)
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+xmap af <Plug>(coc-funcobj-a)
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+omap if <Plug>(coc-funcobj-i)
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+omap af <Plug>(coc-funcobj-a)
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+
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+" Use <TAB> for selections ranges.
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+" NOTE: Requires 'textDocument/selectionRange' support from the language server.
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+" coc-tsserver, coc-python are the examples of servers that support it.
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+nmap <silent> <TAB> <Plug>(coc-range-select)
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+xmap <silent> <TAB> <Plug>(coc-range-select)
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+
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+" Add `:Format` command to format current buffer.
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+command! -nargs=0 Format :call CocAction('format')
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+
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+" Add `:Fold` command to fold current buffer.
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+command! -nargs=? Fold :call CocAction('fold', <f-args>)
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+
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+" Add `:OR` command for organize imports of the current buffer.
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+command! -nargs=0 OR :call CocAction('runCommand', 'editor.action.organizeImport')
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+
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+" Add (Neo)Vim's native statusline support.
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+" NOTE: Please see `:h coc-status` for integrations with external plugins that
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+" provide custom statusline: lightline.vim, vim-airline.
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+set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}
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+
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+" Mappings using CoCList:
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+" Show all diagnostics.
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+nnoremap <silent> <space>a :<C-u>CocList diagnostics<cr>
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+" Manage extensions.
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+nnoremap <silent> <space>e :<C-u>CocList extensions<cr>
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+" Show commands.
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+nnoremap <silent> <space>c :<C-u>CocList commands<cr>
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+" Find symbol of current document.
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+nnoremap <silent> <space>o :<C-u>CocList outline<cr>
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+" Search workspace symbols.
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+nnoremap <silent> <space>s :<C-u>CocList -I symbols<cr>
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+" Do default action for next item.
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+nnoremap <silent> <space>j :<C-u>CocNext<CR>
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+" Do default action for previous item.
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+nnoremap <silent> <space>k :<C-u>CocPrev<CR>
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+" Resume latest coc list.
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+nnoremap <silent> <space>p :<C-u>CocListResume<CR>
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Chris