NeoVim Configuration

init.vim

let mapleader=','
let maplocalleader=','

" Vundle plugin manager
call plug#begin('~/.local/share/nvim/site/autoload')

Plug 'scrooloose/nerdcommenter'
Plug 'vim-ruby/vim-ruby'
Plug 'vim-airline/vim-airline'
Plug 'ctrlpvim/ctrlp.vim'
Plug 'rmagatti/auto-session'
Plug 'junegunn/fzf'
Plug 'tpope/vim-rails'
Plug 'tpope/vim-endwise'
Plug 'tpope/vim-surround'
Plug 'tpope/vim-fugitive'
Plug 'nvim-lua/plenary.nvim'
Plug 'nvim-telescope/telescope.nvim', { 'tag': '0.1.1' }
Plug 'nvim-treesitter/nvim-treesitter'
Plug 'autozimu/LanguageClient-neovim', {
    \ 'branch': 'next',
    \ 'do': 'bash install.sh',
    \ }
Plug 'mattn/vim-lsp-settings'
Plug 'neoclide/coc.nvim', {'branch': 'release'}

call plug#end()

" Plugin settings

" LSP
let g:LanguageClient_serverCommands = {
  \ 'ruby': ['~/.asdf/shims/solargraph', 'stdio'],
  \ }

" Ruby on Rails settings
filetype plugin on
syntax on

set hidden

" Use 2 spaces for tabs
set tabstop=2
set shiftwidth=2
set softtabstop=2
set expandtab

" Show line numbers
set number

" Highlight search results
set hlsearch

" Enable mouse support
set mouse=a

" Enable auto-indentation
set autoindent

" Set the default file format to UTF-8
set encoding=utf-8

set nobackup
set nowritebackup
set signcolumn=yes

" Set the color scheme
colorscheme desert

" Add syntax highlighting for Ruby on Rails
autocmd FileType erb setlocal filetype=eruby.html
autocmd FileType rhtml setlocal filetype=eruby.html
autocmd FileType haml setlocal filetype=haml
autocmd FileType slim setlocal filetype=slim

" Custom mappings

" Running current test file with RSpec
nnoremap <leader>t :!bundle exec rspec %<cr>

" Leaving insert mode
inoremap <silent><leader>jk <ESC>

" Saving a file
nnoremap <silent><leader>w :w<cr>

" Remove search highlighting
nnoremap <silent><leader>g :nohlsearch<cr>

" Source config file
nnoremap <silent><leader>s :source ~/.config/nvim/init.vim<cr>

" Open config file
nnoremap <silent><leader>c :e ~/.config/nvim/init.vim<cr>

" Copy relative filepath into system clipboard
nnoremap <silent><leader>rp :let @+ = expand('%')<cr>

" Copy full filepath into system clipboard
nnoremap <silent><leader>rf :let @+ = expand('%:p')<cr>

" Copy filename into system clipboard
nnoremap <silent><leader>rn :let @+ = expand('%:t')<cr>

" Newline in normal mode
nnoremap <silent><leader>o o<esc>0"_D
nnoremap <silent><leader>O O<esc>0"_D

" Plugin Mappings
nnoremap <silent><leader>pi :PlugInstall<cr>
nnoremap <silent><leader>pu :PlugUpdate<cr>
nnoremap <silent><leader>pU :PlugUpgrade<cr>

" Buffer mappings
nnoremap <silent><leader>bd :bd<cr>
nnoremap <silent><leader>bn :bn<cr>
nnoremap <silent><leader>bp :bp<cr>

" Telescope mappings
nnoremap <leader>ff :Telescope find_files<cr>
nnoremap <leader>fg :Telescope live_grep<cr>
nnoremap <leader>fb :Telescope buffers<cr>
nnoremap <leader>fh :Telescope help_tags<cr>

" Git mappings
nnoremap <leader>G :G<cr>
nnoremap <leader>Gco :G checkout

" LSP mappings
nmap <silent><f1> <Plug>(lcn-menu)
nmap <silent><f2> <Plug>(lcn-rename)
nmap <silent><f5> <Plug>(lcn-definition)
nmap <silent><leader>ds <Plug>(lcn-symbols)

" CoC mappings
inoremap <silent><expr> <c-space> coc#refresh()
inoremap <silent><expr> <TAB>
      \ coc#pum#visible() ? coc#pum#next(1) :
      \ CheckBackspace() ? "\<Tab>" :
      \ coc#refresh()
inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"
inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

" Functions

" CoC functions

function! CheckBackspace() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~# '\s'
endfunction