nix-config/vim/.vimrc

" New Start: A modern Arch workflow built with an emphasis on functionality.
" Copyright (C) 2017-2019 Donovan Glover

if &shell =~# 'fish$'
  set shell=sh
endif

let plugsys = glob('/usr/share/vim/vimfiles/autoload/plug.vim')
let plugusr = glob('~/.vim/autoload/plug.vim')

if empty(plugsys) && empty(plugusr)
  silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
    \ https://raw.githubusercontent.com/junegunn/vim-plug/0.10.0/plug.vim
endif

let g:ale_disable_lsp = 1

call plug#begin('~/.vim/plugged')
    Plug 'dylanaraps/wal.vim'           " Color scheme
    Plug 'preservim/nerdtree'
    Plug 'airblade/vim-gitgutter'       " Git diff
    Plug 'itchyny/lightline.vim'        " Status line
    Plug 'w0rp/ale'                     " Syntax checker
    Plug 'sgur/vim-editorconfig'        " EditorConfig
    Plug 'tpope/vim-fugitive'           " Git wrapper
    Plug 'junegunn/fzf.vim'             " fzf wrapper
    Plug 'lunarWatcher/auto-pairs'      " {Pair} completion
    Plug 'tpope/vim-endwise'            " 'End' completion
    Plug 'reedes/vim-pencil'            " Word wrap
    Plug 'junegunn/goyo.vim'            " Distraction-free writing
    Plug 'jparise/vim-graphql'          " GraphQL support
    Plug 'neoclide/coc.nvim', {'branch': 'release'} " Auto-complete support

    Plug 'osyo-manga/vim-over',         {'on': 'OverCommandLine'}
    Plug 'maksimr/vim-jsbeautify'

    Plug 'pangloss/vim-javascript',     {'for': 'javascript'}
    Plug 'alvan/vim-closetag',          {'for': 'html'}
    Plug 'rhysd/vim-crystal',           {'for': 'crystal'}
    Plug 'rust-lang/rust.vim',          {'for': 'rust'}
    Plug 'baskerville/vim-sxhkdrc',     {'for': 'sxhkdrc'}
    Plug 'cespare/vim-toml',            {'for': 'toml'}
    Plug 'dag/vim-fish',                {'for': 'fish'}
    Plug 'slim-template/vim-slim',      {'for': 'slim'}
    Plug 'Glench/Vim-Jinja2-Syntax',    {'for': 'jinja2'}
    Plug 'plasticboy/vim-markdown',     {'for': 'markdown'}
    Plug 'posva/vim-vue',               {'for': 'vue'}
    Plug 'maxmellon/vim-jsx-pretty',    {'for': 'javascript'}
    Plug 'digitaltoad/vim-pug',         {'for': 'pug'}
    Plug 'leafgarland/typescript-vim',  {'for': 'typescript'}
    Plug 'dbeniamine/todo.txt-vim',     {'for': 'todo'}
    Plug 'lervag/vimtex',               {'for': 'tex'}
call plug#end()

" ============================
" ========= settings =========
" ============================

filetype plugin indent on      " Attempt to determine the file type of extensionless files
syntax enable                  " Turn syntax highlighting on

set nocompatible               " Use vim defaults (i.e. ignore vi compatibility)
set backspace=indent,eol,start " Make the backspace key function as you would expect
set encoding=utf-8             " Always show files as utf-8
set fileencoding=utf-8         " Ensure that we always save files as utf-8

set autoindent                 " Automatically indent new lines
set ignorecase                 " By default use case-insensitive search (combine with smartcase)
set smartcase                  " Make search case-sensitive when using capital letters
set showcmd                    " Always show the current keybinding being executed
set spell                      " Enable spell check by default
set hidden                     " Switch between buffers without saving them

set incsearch                  " Automatically move to text as you search for it
set wildmenu                   " Show a menu of the different options when you tab in command mode
set display+=lastline          " Show as much of a long line as possible
set laststatus=2               " Enable the status line (set to 0 to remove)
set noshowmode                 " Disable the --MODE-- text (enable if not using the status line)

set history=100                " Only keep the last 100 commands
set tabpagemax=50              " Set the maximum number of tabs to be opened in any window to 50
set viminfo^=!                 " Use viminfo to store workspace and other data automatically
set sessionoptions-=options    " When you explicitly save a workspace, save the entire environment

set t_Co=256                   " Tell vim that we want to use 256 colors
set scrolloff=1                " The minimal number of rows to show when scrolling up/down
set sidescrolloff=5            " The minimal number of columns to show when scrolling left/right

set undofile                   " Keep track of undos even after you close a file
set undodir=~/.vim/undo        " Save the undo history here (not that the directory must exist)
set undolevels=1000            " We can undo this many times
set undoreload=10000           " The maximum number of lines to keep in the undo file

set tabstop=4                  " Show a tab character as 4 spaces
set softtabstop=0              " Edit soft tabs as if they're regular spaces
set shiftwidth=4               " Make autoindent appear as 4 spaces

set expandtab                  " When using <Tab>, replace the tab character with 4 spaces
set smarttab                   " Always indent based on column number to align things easier

set mouse=a                    " Enable mouse support in (a)ll modes

" ==========================
" ========= colors =========
" ==========================

" Set the color scheme to wal, or install plugins as needed.
try
  colorscheme wal
catch /^Vim\%((\a\+)\)\=:E185/
  echo "wal was not found. Installing plugins...\n" | PlugInstall --sync
  echo "Plugins installed! You can now use vim.\n"  | qa
endtry

" Don't show the separator for vertical splits
highlight vertsplit ctermfg=0 ctermbg=none

" Finally, an easier way to read search results
highlight Search ctermbg=240 ctermfg=255
highlight IncSearch ctermbg=255 ctermfg=240

" Easily show lines that go past the character count
" highlight OverLength ctermbg=240 ctermfg=230
" call matchadd('OverLength', '\%80v')

autocmd BufNewFile,BufRead *.ecr    setlocal syntax=html
autocmd BufNewFile,BufRead *.slang  setlocal filetype=slim

" =============================
" ========= lightline =========
" =============================

" Add the current branch to the status line
let g:lightline = {
\   'active': {
\     'left': [
\       [ 'mode', 'paste' ], [ 'gitbranch' ],
\       ['readonly', 'filename', 'modified']
\     ]
\   },
\   'component_function': {
\     'gitbranch': 'fugitive#head'
\   }
\ }

" Note that wal.vim's lightline theme uses some options that are incompatible
" with regular vim and are only supported by neovim.
"
" Wal Themes: Tomorrow, Tomorrow_Night, one, materia, material, nord
" Other Themes: wombat, solarized, powerline, jellybeans, Tomorrow_Night_Blue,
"               Tomorrow_Night_Eighties, PaperColor, seoul256, landscape,
"               darcula, molokai, OldHope, deus
if has('nvim')
    let g:lightline.colorscheme = 'wal'
else
    let g:lightline.colorscheme = 'Tomorrow_Night'
endif

" ============================
" ========= keybinds =========
" ============================

" Use space as the global leader
let mapleader = ' '

" Top row
nnoremap <silent> <leader>e :set nu!<CR>
nnoremap <silent> <leader>t :OverCommandLine<CR>%s/

" Middle row
nnoremap <silent> <leader>a :Vexplore<CR>
nnoremap <silent> <leader>s :Sexplore<CR>
nnoremap <silent> <leader>d :Explore<CR>
nnoremap <silent> <leader>f :Files<CR>
nnoremap <silent> <leader>g :set hlsearch!<CR>
nnoremap <silent> <leader>j :Buffers<CR>
nnoremap <silent> <leader>l :Rg<CR>

" Bottom row
autocmd FileType javascript nnoremap <silent> <leader>b :call JsBeautify()<CR>
autocmd FileType json       nnoremap <silent> <leader>b :call JsonBeautify()<CR>
autocmd FileType jsx        nnoremap <silent> <leader>b :call JsxBeautify()<CR>
autocmd FileType html       nnoremap <silent> <leader>b :call HtmlBeautify()<CR>
autocmd FileType css        nnoremap <silent> <leader>b :call CSSBeautify()<CR>

" Easily enter 'zen mode' with Goyo and Pencil (Note: Goyo resets the color scheme)
nnoremap <silent> <leader>2 :PencilSoft<CR>:Goyo<CR>:hi vertsplit ctermfg=0 ctermbg=none<CR>

" Save and load vim sessions
nnoremap <silent> <leader>3 :mksession! ~/.vim/.session<CR>
nnoremap <silent> <leader>4 :source ~/.vim/.session<CR>

" =========================
" ========= netrw =========
" =========================

" Remove the banner
let g:netrw_banner = 0

" Use the tree list view
let g:netrw_liststyle = 3

" =======================
" ========= ale =========
" =======================

nmap <silent> <C-j> <Plug>(ale_previous_wrap)
nmap <silent> <C-k> <Plug>(ale_next_wrap)

" ==========================
" ========= vimtex =========
" ==========================

" Disable all keybinds so we can define our own
let g:vimtex_mappings_enabled = 0
let g:vimtex_imaps_enabled = 0
let g:vimtex_view_method = 'zathura'
let g:vimtex_compiler_latexmk = {'build_dir': '.tex'}

" Set the normal keybinds
nnoremap <localleader>f <plug>(vimtex-view)
nnoremap <localleader>g <plug>(vimtex-compile)
nnoremap <localleader>d <plug>(vimtex-env-delete)
nnoremap <localleader>c <plug>(vimtex-env-change)

" ================================
" ========= vim-markdown =========
" ================================

" Disable vim-markdown folding
let g:vim_markdown_folding_disabled = 1
let g:vim_markdown_math             = 1
let g:vim_markdown_frontmatter      = 1
autocmd BufNewFile,BufRead *.md set conceallevel=2

" Ignore syntax concealing for markdown files
let g:vim_markdown_conceal = 0
let g:tex_conceal = ""
let g:vim_markdown_math = 1

" ===========================
" ========= fzf.vim =========
" ===========================

" Hide the status line showing "fzf" when using fzf.vim
" NOTE: You must add "showmode" if your setup depends on it
autocmd! FileType fzf
autocmd  FileType fzf set laststatus=0 noshowmode noruler
  \| autocmd BufLeave <buffer> set laststatus=2 ruler

" ============================
" ========= coc.nvim =========
" ============================

" Some servers have issues with backup files, see #649.
set nobackup
set nowritebackup

" Give more space for displaying messages.
set cmdheight=2

" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
" delays and poor user experience.
set updatetime=300

" Don't pass messages to |ins-completion-menu|.
set shortmess+=c

" Always show the signcolumn, otherwise it would shift the text each time
" diagnostics appear/become resolved.
set signcolumn=yes

" GoTo code navigation.
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Use K to show documentation in preview window.
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  elseif (coc#rpc#ready())
    call CocActionAsync('doHover')
  else
    execute '!' . &keywordprg . " " . expand('<cword>')
  endif
endfunction

" Use tab for trigger completion with characters ahead and navigate.
" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
" other plugin before putting this into your config.
inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

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