neovim setup

init.vim

call plug#begin(stdpath('data') . '/plugged')
" Plug 'dracula/vim' " Theme
" Plug 'morhetz/gruvbox'
Plug 'drewtempelmeyer/palenight.vim'
Plug 'scrooloose/nerdtree' " file explorer
Plug 'ryanoasis/vim-devicons'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'airblade/vim-gitgutter'
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'tmsvg/pear-tree'
Plug 'tpope/vim-fugitive'
Plug 'frazrepo/vim-rainbow'
Plug 'itchyny/vim-cursorword'
" start screen
Plug 'mhinz/vim-startify'
" above two are for file searching
" below are ts stuff
Plug 'neoclide/coc.nvim', {'branch': 'release'}
let g:coc_global_extensions = ['coc-emmet', 'coc-css', 'coc-html', 'coc-json', 'coc-prettier', 'coc-tsserver', 'coc-eslint']
" typescript tsx
Plug 'leafgarland/typescript-vim'
Plug 'peitalin/vim-jsx-typescript'

function! BuildComposer(info)
  if a:info.status != 'unchanged' || a:info.force
    if has('nvim')
      !cargo build --release --locked
    else
      !cargo build --release --locked --no-default-features --features json-rpc
    endif
  endif
endfunction

Plug 'euclio/vim-markdown-composer', { 'do': function('BuildComposer') }

call plug#end()

" from missing-semester-cs
" Turn on syntax highlighting.
syntax on

" Disable the default Vim startup message.
set shortmess+=I

" Show line numbers.
set number

" font

" This enables relative line numbering mode. With both number and
" relativenumber enabled, the current line shows the true line number, while
" all other lines (above and below) are numbered relative to the current line.
" This is useful because you can tell, at a glance, what count is needed to
" jump up or down to a particular line, by {count}k to go up or {count}j to go
" down.
set relativenumber

" Always show the status line at the bottom, even if you only have one window open.
set laststatus=2
" The backspace key has slightly unintuitive behavior by default. For example,
" by default, you can't backspace before the insertion point set with 'i'.
" This configuration makes backspace behave more reasonably, in that you can
" backspace over anything.
set backspace=indent,eol,start

" By default, Vim doesn't let you hide a buffer (i.e. have a buffer that isn't
" shown in any window) that has unsaved changes. This is to prevent you from "
" forgetting about unsaved changes and then quitting e.g. via `:qa!`. We find
" hidden buffers helpful enough to disable this protection. See `:help hidden`
" for more information on this.
set hidden

" This setting makes search case-insensitive when all characters in the string
" being searched are lowercase. However, the search becomes case-sensitive if
" it contains any capital letters. This makes searching more convenient.
set ignorecase
set smartcase

" Enable searching as you type, rather than waiting till you press enter.
set incsearch

" Unbind some useless/annoying default key bindings.
nmap Q <Nop> " 'Q' in normal mode enters Ex mode. You almost never want this.

" Disable audible bell because it's annoying.
set noerrorbells visualbell t_vb=

" Enable mouse support. You should avoid relying on this too much, but it can
" sometimes be convenient.
set mouse+=a

" Try to prevent bad habits like using the arrow keys for movement. This is
" not the only possible bad habit. For example, holding down the h/j/k/l keys
" for movement, rather than using more efficient movement commands, is also a
" bad habit. The former is enforceable through a .vimrc, while we don't know
" how to prevent the latter.
" Do this in normal mode...
nnoremap <Left>  :echoe "Use h"<CR>
nnoremap <Right> :echoe "Use l"<CR>
nnoremap <Up>    :echoe "Use k"<CR>
nnoremap <Down>  :echoe "Use j"<CR>
" ...and in insert mode
inoremap <Left>  <ESC>:echoe "Use h"<CR>
inoremap <Right> <ESC>:echoe "Use l"<CR>
inoremap <Up>    <ESC>:echoe "Use k"<CR>
inoremap <Down>  <ESC>:echoe "Use j"<CR>
" missing semester end
" coc start
" TextEdit might fail if hidden is not set.
set hidden

" 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
" Add (Neo)Vim's native statusline support.
" NOTE: Please see `:h coc-status` for integrations with external plugins that
" provide custom statusline: lightline.vim, vim-airline.
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}
" coc end

" colorscheme gruvbox


let g:NERDTreeIndicatorMapCustom = {
    \ "Modified"  : "✹",
    \ "Staged"    : "✚",
    \ "Untracked" : "✭",
    \ "Renamed"   : "➜",
    \ "Unmerged"  : "═",
    \ "Deleted"   : "",
    \ "Dirty"     : "✗",
    \ "Clean"     : "✔︎",
    \ 'Ignored'   : '☒',
    \ "Unknown"   : "?"
    \ }

" fileexplorer and icon config
let g:NERDTreeShowHidden = 1
let g:NERDTreeMinimalUI = 1
let g:NERDTreeIgnore = []
let g:NERDTreeStatusline = ''
" Automaticaly close nvim if NERDTree is only thing left open
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif
" Toggle
nnoremap <silent> <C-b> :NERDTreeToggle<CR>

" Integrated terminal
" open new split panes to right and below
set splitright
set splitbelow
" turn terminal to normal mode with escape
tnoremap <Esc> <C-\><C-n>
" start terminal in insert mode
au BufEnter * if &buftype == 'terminal' | :startinsert | endif
" open terminal on ctrl+n
function! OpenTerminal()
  split term://zsh
  resize 10
endfunction
nnoremap <c-n> :call OpenTerminal()<CR>

" ZSH for terminal
set shell=/bin/zsh

" Switching between panels
" use alt+hjkl to move between split/vsplit panels
" Removed in favor of line 153

" line 5 and 6 config file explorer
nnoremap <C-p> :FZF<CR>
let g:fzf_action = {
  \ 'ctrl-t': 'tab split',
  \ 'ctrl-s': 'split',
  \ 'ctrl-v': 'vsplit'
  \}

" ignore node_modules
let $FZF_DEFAULT_COMMAND = 'ag -g ""'
set cmdheight=2
set tabstop=2
set softtabstop=2
set shiftwidth=2
set smarttab
set expandtab

let g:gitgutter_sign_added = '✚'
let g:gitgutter_sign_modified = '✹'
let g:gitgutter_sign_removed = '-'
let g:gitgutter_sign_removed_first_line = '-'
let g:gitgutter_sign_modified_removed = '-'

" THEME
let g:airline_powerline_fonts = 1
set background=dark
colorscheme palenight
" Italics for my favorite color scheme
let g:palenight_terminal_italics=1

if (has("termguicolors"))
 set termguicolors
endif
syntax enable

" bracket pairing
" Default rules for matching:
let g:pear_tree_pairs = {
            \ '(': {'closer': ')'},
            \ '[': {'closer': ']'},
            \ '{': {'closer': '}'},
            \ "'": {'closer': "'"},
            \ '"': {'closer': '"'}
            \ }
" See pear-tree/after/ftplugin/ for filetype-specific matching rules

" Pear Tree is enabled for all filetypes by default:
let g:pear_tree_ft_disabled = []

" Pair expansion is dot-repeatable by default:
let g:pear_tree_repeatable_expand = 1

" Smart pairs are disabled by default:
let g:pear_tree_smart_openers = 1
let g:pear_tree_smart_closers = 1
let g:pear_tree_smart_backspace = 1

" If enabled, smart pair functions timeout after 60ms:
let g:pear_tree_timeout = 60

" Automatically map <BS>, <CR>, and <Esc>
let g:pear_tree_map_special_keys = 1

" Use ctrl-[hjkl] to select the active split!
nmap <silent> <c-k> :wincmd k<CR>
nmap <silent> <c-j> :wincmd j<CR>
nmap <silent> <c-h> :wincmd h<CR>
nmap <silent> <c-l> :wincmd l<CR>

if exists("g:loaded_webdevicons")
  call webdevicons#refresh()
endif

" hover documentation tooltip
nnoremap <silent> K :call CocAction('doHover')<CR>

" diagonistics
function! ShowDocIfNoDiagnostic(timer_id)
  if (coc#util#has_float() == 0)
    silent call CocActionAsync('doHover')
  endif
endfunction

function! s:show_hover_doc()
  call timer_start(500, 'ShowDocIfNoDiagnostic')
endfunction

autocmd CursorHoldI * :call <SID>show_hover_doc()
autocmd CursorHold * :call <SID>show_hover_doc()
nnoremap <silent> <space>d :<C-u>CocList diagnostics<cr>
nnoremap <silent> <space>s :<C-u>CocList -I symbols<cr>

" performing auto code changes or fixes for linter issues
nmap <leader>do <Plug>(coc-codeaction)


" Nerdtree file highlighting
" NERDTrees File highlighting only the glyph/icon
" test highlight just the glyph (icons) in nerdtree:
autocmd filetype nerdtree highlight haskell_icon ctermbg=none ctermfg=Red guifg=#ffa500
autocmd filetype nerdtree highlight html_icon ctermbg=none ctermfg=Red guifg=#ffa500
autocmd filetype nerdtree highlight go_icon ctermbg=none ctermfg=Red guifg=#ffa500

autocmd filetype nerdtree syn match haskell_icon ## containedin=NERDTreeFile
" if you are using another syn highlight for a given line (e.g.
" NERDTreeHighlightFile) need to give that name in the 'containedin' for this
" other highlight to work with it
autocmd filetype nerdtree syn match html_icon ## containedin=NERDTreeFile,html
autocmd filetype nerdtree syn match go_icon ## containedin=NERDTreeFile