Quick vim tips

.vimrc

" move vertically by visual line
nnoremap j gj
nnoremap k gk

" highlight just the 81st column of wide lines... (Damian Conway)
highlight ColorColumn ctermbg=magenta
call matchadd('ColorColumn', '\%81v', 100)

" Enable code folding
set foldenable
" Use space to toggle folds and create folds
nnoremap <silent> <Space> @=(foldlevel('.')?'za':"\<Space>")<CR>
vnoremap <Space> zf
" Set foldmethod to indent and allow manual
augroup vimrc
    au BufReadPre * setlocal foldmethod=indent
    au BufWinEnter * if &fdm == 'indent' | setlocal foldmethod=manual | endif
augroup END
set foldlevelstart=10   " Open most folds by default
set foldnestmax=10      " 10 nested folds max

" Use ag over grep
set grepprg=ag\ --nogroup\ --nocolor

" Use ag in CtrlP for listing files. Lightning fast and respects
" .gitignore
let g:ctrlp_user_command = 'ag %s -l --nocolor -g ""'

" ag is fast enough that CtrlP doesn't need to cache
let g:ctrlp_use_caching = 0

" define :Ag
if !exists(":Ag")
    command -nargs=+ -complete=file -bar Ag silent! grep! <args>|cwindow|redraw!
endif

" bind K to grep word under cursor
nnoremap K :silent! grep! "\b<C-R><C-W>\b"<CR>:cw<CR>

" bind \ (backward slash) to grep shortcut
nnoremap \ :Ag<SPACE>

" Syntastic {{{
set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*

let g:syntastic_always_populate_loc_list = 1
let g:syntastic_loc_list_height = 5
let g:syntastic_auto_loc_list = 0
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 1
let g:syntastic_id_checkers = 1
let g:syntastic_aggregate_errors = 1
let g:syntastic_javascript_checkers = ['eslint']
let g:syntastic_python_python_exec = '/usr/bin/python3'
let g:syntastic_python_checkers = ['python', 'pylint']
let g:syntastic_enable_signs = 1

let g:syntastic_error_symbol = '❌'
let g:syntastic_style_error_symbol = '⁉️'
let g:syntastic_warning_symbol = '⚠️'
let g:syntastic_style_warning_symbol = 'ℹ'

highlight link SyntasticErrorSign SignColumn
highlight link SyntasticWarningSign SignColumn
highlight link SyntasticStyleErrorSign SignColumn
highlight link SyntasticStyleWarningSign SignColumn
" }}}

" Clipboard shortcuts {{{
nnoremap <C-y> "+y
vnoremap <C-y> "+y
" }}}