.vimrc.fzf

" FZF setup
"
" There is very annoying issue with fzf - when you select file and buffer stays in some
" strange state, where almost anything closes the buffer and some
" actions like attempt to search text deletes part of buffer without undo
" Issue is not stable, it is often reproduced when you start work with vim,
" but then it disappears and it start work normally, not sure why
" So for now keep ctrlp enabled for main mappings
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
" Files [PATH]    Files (similar to :FZF)
" GFiles [OPTS]   Git files (git ls-files)
" GFiles? Git files (git status)
" Buffers Open buffers
" Colors  Color schemes
" Ag [PATTERN]    ag search result (ALT-A to select all, ALT-D to deselect all)
" Lines [QUERY]   Lines in loaded buffers
" BLines [QUERY]  Lines in the current buffer
" Tags [QUERY]    Tags in the project (ctags -R)
" BTags [QUERY]   Tags in the current buffer
" Marks   Marks
" Windows Windows
" Locate PATTERN  locate command output
" History v:oldfiles and open buffers
" History:    Command history
" History/    Search history
" Snippets    Snippets (UltiSnips)
" Commits Git commits (requires fugitive.vim)
" BCommits    Git commits for the current buffer
" Commands    Commands
" Maps    Normal mode mappings
" Helptags    Help tags 1
" Filetypes   File types
noremap <Leader>f :FZF<CR>
noremap <Leader>t :Tags<CR>
inoremap <Leader>l :Lines<CR>
" Complete lines with FZF
imap <c-x><c-l> <plug>(fzf-complete-line)
noremap <Leader>a :Ag<CR>
" " See also: https://github.com/junegunn/fzf/wiki/examples
" " See also: https://github.com/D630/fzf-contrib
" " Similar: https://github.com/garybernhardt/selecta
command! FZFMru call fzf#run({
          \'source': NeomruHistory(),
          \'sink' : 'e ',
          \'options' : '-m',
          \})
function! NeomruHistory()
    return "sed '1d' " . $HOME . "/.vim/tmp/cache/neomru/file"
    "return "ag -i " . a:l . " | sed 's@\\(.[^:]*\\):\\(.[^:]*\\):\\(.*\\)@\\3:\\2:\\1@' "
endfunction
noremap <Leader>fm :FZFMru<CR>
" Show FZF suggestions inside the active window instead of creating separate one (default).
let g:fzf_layout = { 'window': 'enew' }

" Open list of buffers
command! -bang Buffers call fzf#run(fzf#wrap('buffers',
    \ {'source': map(range(1, bufnr('$')), 'bufname(v:val)')}, <bang>0))
" Locate any file on the filesystem - :LocateFZF .vimrc
command! -nargs=1 -bang LocateFZF call fzf#run(fzf#wrap(
    \ {'source': 'locate <q-args>', 'options': '-m'}, <bang>0))
" Jump to tags with :Tags
function! s:tags_sink(line)
  let parts = split(a:line, '\t\zs')
  let excmd = matchstr(parts[2:], '^.*\ze;"\t')
  execute 'silent e' parts[1][:-2]
  let [magic, &magic] = [&magic, 0]
  execute excmd
  let &magic = magic
endfunction

function! s:tags()
  if empty(tagfiles())
    echohl WarningMsg
    echom 'No tags here'
    echohl None
    return
    " echohl WarningMsg
    " echom 'Preparing tags'
    " echohl None
    " call system('ctags -R')
  endif
  call fzf#run({
  \ 'source':  'cat '.join(map(tagfiles(), 'fnamemodify(v:val, ":S")')).
  \            '| grep -v -a ^!',
  \ 'options': '+m -d "\t" --with-nth 1,4.. -n 1 --tiebreak=index',
  \ 'down':    '40%',
  \ 'sink':    function('s:tags_sink')})
endfunction

command! Tags call s:tags()