[Jumps] Support preview window (#1553)

Require fzf 0.54.0 or above

Signed-off-by: zeminzhou <zhouzemin@pingcap.cn>
Co-authored-by: Junegunn Choi <junegunn.c@gmail.com>

.github/ISSUE_TEMPLATE.md

@@ -2,7 +2,8 @@
 
 <!-- Check all that apply [x] -->
 
-- [ ] I have fzf 0.30.0 or above
+- [ ] I have fzf 0.54.0 or above
+    - `:echo system(fzf#exec() .. ' --version')`
 - [ ] I have read through https://github.com/junegunn/fzf.vim/blob/master/README.md
 - [ ] I have read through https://github.com/junegunn/fzf/blob/master/README-VIM.md
 - [ ] I have read through the manual page of fzf (`man fzf`)

README.md

@@ -64,7 +64,7 @@ so you can omit it if you use a plugin manager that doesn't support hooks.
 
 ### Dependencies
 
-- [fzf][fzf-main] 0.41.1 or above
+- [fzf][fzf-main] 0.54.0 or above
 - For syntax-highlighted preview, install [bat](https://github.com/sharkdp/bat)
 - If [delta](https://github.com/dandavison/delta) is available, `GF?`,
   `Commits` and `BCommits` will use it to format `git diff` output.

autoload/fzf/vim.vim

@@ -1337,37 +1337,52 @@ endfunction
 " Jumps
 " ------------------------------------------------------------------
 function! s:jump_format(line)
-  return substitute(a:line, '[0-9]\+', '\=s:yellow(submatch(0), "Number")', '')
+  let line = substitute(a:line, '[0-9]\+', '\=s:yellow(submatch(0), "Number")', '')
+  let line = substitute(line, '\s.\{-}\ze:[0-9]\+:', '\=s:green(submatch(0), "Directory")', '')
+  let line = substitute(line, '\%(:[0-9]\+\)\+:', '\=s:black(submatch(0), "NonText")', '')
+  return line
 endfunction
 
 function! s:jump_sink(lines)
   if len(a:lines) < 2
     return
   endif
-  call s:action_for(a:lines[0])
+  keepjumps call s:action_for(a:lines[0])
-  let idx = index(s:jumplist, a:lines[1])
+  let idx = str2nr(a:lines[1])
-  if idx == -1
+  let delta = idx - s:jump_current - 1
-    return
-  endif
-  let current = match(s:jumplist, '\v^\s*\>')
-  let delta = idx - current
   if delta < 0
     execute 'normal! ' . -delta . "\<C-O>"
   else
     execute 'normal! ' . delta . "\<C-I>"
   endif
+  normal! zvzz
 endfunction
 
 function! fzf#vim#jumps(...)
-  redir => cout
+  let [jumps, pos] = getjumplist()
-  silent jumps
+  if empty(jumps)
-  redir END
+    return s:warn('No jumps')
-  let s:jumplist = split(cout, '\n')
+  endif
-  let current = -match(s:jumplist, '\v^\s*\>')
+  let s:jumplist = []
+  for idx in range(len(jumps))
+    let jump = jumps[idx]
+    let loc = expand('#'.jump.bufnr.':p:~:.')
+    if empty(loc)
+      let loc = '[No Name]'
+    endif
+    let loc .= ':'.jump.lnum
+    if jump.col
+      let loc .= ':'.jump.col
+    endif
+    let line = printf('%-2d %s: %s', idx+1, loc, getbufoneline(jump.bufnr, jump.lnum))
+    call add(s:jumplist, line)
+  endfor
+  let s:jump_current = pos
+  let current = -pos-1
   return s:fzf('jumps', {
-  \ 'source'  : extend(s:jumplist[0:0], map(s:jumplist[1:], 's:jump_format(v:val)')),
+  \ 'source'  : map(s:jumplist, 's:jump_format(v:val)'),
   \ 'sink*'   : s:function('s:jump_sink'),
-  \ 'options' : '+m -x --ansi --tiebreak=index --cycle --scroll-off 999 --sync --bind start:pos:'.current.' --tac --header-lines 1 --tiebreak=begin --prompt "Jumps> "',
+  \ 'options' : ['+m', '-x', '--ansi', '--tiebreak=index', '--cycle', '--scroll-off=999', '--sync', '--bind', 'start:pos('.current.')+offset-middle', '--tac', '--tiebreak=begin', '--prompt', 'Jumps> ', '--preview-window', '+{3}-/2', '--tabstop=2', '--delimiter', '[:\s]+'],
   \ }, a:000)
 endfunction
 

bin/preview.sh

@@ -47,7 +47,9 @@ fi
 
 FILE="${FILE/#\~\//$HOME/}"
 if [ ! -r "$FILE" ]; then
-  echo "File not found ${FILE}"
+  if [[ "${INPUT[0]}" != '[No Name]' ]]; then
+    echo "File not found ${FILE}"
+  fi
   exit 1
 fi
 

doc/fzf-vim.txt

@@ -85,7 +85,7 @@ so you can omit it if you use a plugin manager that doesn't support hooks.
 < Dependencies >______________________________________________________________~
                                                           *fzf-vim-dependencies*
 
- - {fzf}{1} 0.41.1 or above
+ - {fzf}{1} 0.54.0 or above
  - For syntax-highlighted preview, install {bat}{4}
  - If {delta}{5} is available, `GF?`, `Commits` and `BCommits` will use it to
    format `git diff` output.

plugin/fzf.vim

@@ -66,7 +66,7 @@ call s:defs([
 \'command!      -bang -nargs=* BTags                            call fzf#vim#buffer_tags(<q-args>, fzf#vim#with_preview({ "placeholder": "{2}:{3..}" }), <bang>0)',
 \'command! -bar -bang Snippets                                  call fzf#vim#snippets(<bang>0)',
 \'command! -bar -bang Commands                                  call fzf#vim#commands(<bang>0)',
-\'command! -bar -bang Jumps                                     call fzf#vim#jumps(<bang>0)',
+\'command! -bar -bang Jumps                                     call fzf#vim#jumps(fzf#vim#with_preview({ "placeholder": "{2..4}"}), <bang>0)',
 \'command! -bar -bang Marks                                     call fzf#vim#marks(<bang>0)',
 \'command! -bar -bang Changes                                   call fzf#vim#changes(<bang>0)',
 \'command! -bar -bang Helptags                                  call fzf#vim#helptags(fzf#vim#with_preview({ "placeholder": "--tag {2}:{3}:{4}" }), <bang>0)',