vimrc: update comments, add mappings

[dotfiles.git] / etc / vim / .vimrc

""" vim dir in xdg config
let x = ($XDG_CONFIG_HOME??($HOME.'/.config')).'/vim'
execute 'set runtimepath='.x.','.&runtimepath.','.x.'/after'
execute 'set packpath='.x.','.&packpath.','.x.'/after'

""" vim-only defaults
if !has('nvim')
    " neovim defaults are already set
    source $VIMRUNTIME/defaults.vim

    " packages
    packadd matchit
    packadd editorconfig

    " options
    set hlsearch
    set autoindent
endif

""" dir for state files in xdg state
let x = ($XDG_STATE_HOME??($HOME.'/.local/state')).'/vim'
if !isdirectory(x)
    call mkdir(x, 'p', 0700)
endif

" NOTE: backup files in vim state dir for both vim and neovim
let y = x.'/backup'
if !isdirectory(y)
    call mkdir(y, 'p', 0700)
endif
execute 'set backupdir='.y.'//'
set backup backupcopy=yes

" NOTE: neovim uses ShaDa (SHAred DAta) format for viminfo and swap, and uses a
"       different version for undo files, so these types of files when created
"       by vim cannot be used with neovim, and the 'viminfofile', 'directory',
"       and 'undodir' directories cannot be shared.
" NOTE: neovim has a nice default for these directories and files so
"       customizing them is not necessary for it.
if !has('nvim')
    " NOTE: 'viminfofile' is a deprecated alias for 'shada' in neovim
    execute 'set viminfofile='.x.'/.viminfo'

    let y = x.'/swap'
    if !isdirectory(y)
        call mkdir(y, 'p', 0700)
    endif
    execute 'set directory='.y.'//'

    let y = x.'/undo'
    if !isdirectory(y)
        call mkdir(y, 'p', 0700)
    endif
    execute 'set undodir='.y.'//'
endif

autocmd BufNew * set undofile

unlet x
unlet y


""" options
autocmd VimEnter,WinNew * set number
autocmd VimEnter,WinNew * set relativenumber
autocmd InsertEnter * set norelativenumber
autocmd InsertLeave * set   relativenumber
autocmd FocusLost   * set norelativenumber
autocmd FocusGained * set   relativenumber

autocmd VimEnter,WinNew * set colorcolumn=80
autocmd VimEnter,WinNew * set cursorline

autocmd VimEnter,WinNew * set list
set listchars=tab:├─,extends:»,precedes:«,space:·,trail:∙,nbsp:■

""" styles
highlight ColorColumn term=NONE ctermbg=0

highlight WhiteSpaceMol ctermfg=Black
autocmd VimEnter,WinNew * match WhiteSpaceMol / /
highlight WhiteSpaceBol ctermfg=DarkBlue
autocmd VimEnter,WinNew * 2match WhiteSpaceBol /\(^ \+\)\|\( \+$\)/

""" indent
autocmd FileType python     set softtabstop=4 shiftwidth=4 expandtab
autocmd FileType markdown   set softtabstop=4 shiftwidth=4 expandtab
autocmd FileType javascript set softtabstop=2 shiftwidth=2 expandtab
autocmd FileType json       set softtabstop=2 shiftwidth=2 expandtab
autocmd FileType html       set softtabstop=2 shiftwidth=2 expandtab
let g:EditorConfig_enable_for_new_buf = 1

""" syntax
autocmd FileType todo       set colorcolumn=0

""" mappings
"" use more accessible escapes, as C-n and C-o are shadowed by some terminals
if has('nvim')
    tnoremap <C-\>n <C-\><C-N>
    tnoremap <C-\>o <C-\><C-O>
endif

"" move windows any time
if has('nvim')
    " terminal
    tnoremap <A-h> <C-\><C-N><C-w>h
    tnoremap <A-j> <C-\><C-N><C-w>j
    tnoremap <A-k> <C-\><C-N><C-w>k
    tnoremap <A-l> <C-\><C-N><C-w>l
endif
" insert
inoremap <A-h> <C-\><C-N><C-w>h
inoremap <A-j> <C-\><C-N><C-w>j
inoremap <A-k> <C-\><C-N><C-w>k
inoremap <A-l> <C-\><C-N><C-w>l
" normal
nnoremap <A-h> <C-w>h
nnoremap <A-j> <C-w>j
nnoremap <A-k> <C-w>k
nnoremap <A-l> <C-w>l