dotfiles/.config/nixpkgs/neovim/vimrc

" ------ settings ------

" change terminal title
set title

" xdg-ish settings
set undodir=~/.cache/vim/undo,.
set backupdir=~/.cache/vim/backup,.
set directory=~/.cache/vim/swap//,.

" default indentation
set shiftwidth=2
set tabstop=4
set expandtab

" permanent undo history
set undofile

" allow switching buffers
set hidden

" always scroll
set scrolloff=99

" show line numbers
set number
set relativenumber

" show gutter
set signcolumn=yes

" set wordwrap indent
set nowrap
set linebreak
if exists("&breakindent")
  set breakindent
  set breakindentopt=shift:2,sbr
endif

" show whitespace
set list

" make a new copy of the file for backup
" setting to no or auto messes with filewatchers
set backupcopy=yes

" disable modelines
set nomodeline

" ------ key bindings ------

" ; as :
nnoremap ; :
vnoremap ; :

" allow <ESC> via jj in insert mode
inoremap jj <ESC>

" tab switching
nnoremap <C-T>h :tabprev<cr>
nnoremap <C-T>l :tabnext<cr>

" fix j/k with wraps
nnoremap j gj
nnoremap k gk
vnoremap j gj
vnoremap k gk

" cursor display
nnoremap <Leader>c :set cursorline! cursorcolumn!<CR>

" fzf
nnoremap <C-P> :GitFiles -o -c --exclude-standard<CR>
nnoremap <C-O> :Buffers<CR>
if executable('rg')
  nnoremap <Leader>f :Rg<SPACE>
elseif executable('ag')
  nnoremap <Leader>f :Ag<SPACE>
endif

" git
nnoremap <Leader>gs :Git<CR>
nnoremap <Leader>gb :Merginal<CR>

" undo tree
nnoremap <Leader>ut :UndotreeToggle<CR>

" vimrc
nnoremap <Leader>ve :vsplit $MYVIMRC<CR>
nnoremap <Leader>vs :source $MYVIMRC<CR>

" ------ nvim specific ------
if has('nvim')
  set inccommand=split
  tnoremap <C-[><C-[> <C-\><C-N>
  autocmd TermOpen * setlocal scrollback=10000 nonumber norelativenumber
  autocmd TermOpen * startinsert
  autocmd FileType fzf tnoremap <buffer> jj <ESC>
  autocmd BufWinEnter,WinEnter term://* startinsert
  autocmd BufLeave term://* stopinsert

  " fix flickering when clearing terminal
  autocmd TermEnter * setlocal scrolloff=0
  autocmd TermLeave * setlocal scrolloff=99

  nnoremap <Leader>tv :vsp term://$SHELL<CR>
  nnoremap <Leader>to :term<CR>
endif

augroup formatting
  au!
  " strip trailing whitespace
  autocmd BufWritePre * :%s/\s\+$//e
  autocmd FileType markdown :set tw=80
augroup end

colorscheme seti

" Use unset background so that syntax-highlighted text does not overwrite the
" base color. This might cause problems on white backgrounded terminals but I
" don't use those
highlight Normal ctermbg=NONE

" Add a background for popups and floats to distinguish from regular text
highlight Pmenu ctermbg=235 guibg=#282a2b
highlight link FloatBorder Pmenu

highlight MiniStatuslineModeNormal ctermbg=117 ctermfg=0
highlight MiniStatuslineModeCommand ctermbg=117 ctermfg=0
highlight MiniStatuslineModeInsert ctermbg=119 ctermfg=0
highlight MiniStatuslineModeVisual ctermbg=216 ctermfg=0
highlight MiniStatuslineModeReplace ctermbg=216 ctermfg=0
highlight MiniStatuslineModeOther ctermbg=119 ctermfg=0