squash! Add support for repeating previous/next commands

Use "normal" in b:unimpaired_prevnext explicitly.  This allows to
specify the whole command for :exe, and does not require a mapping.

The mapping is used internally to handle the "zv", but that could be
included in the command already now.

Author: blueyed

plugin/unimpaired.vim

@@ -36,7 +36,7 @@ function! s:MapNextFamily(map,cmd) abort
   let map = '<Plug>unimpaired'.toupper(a:map)
   let cmd = '".(v:count ? v:count : "")."'.a:cmd
   let end = '"<CR>'.(a:cmd == 'l' || a:cmd == 'c' ? 'zv' : '')
-  let prevnext = printf('["\%sPrevious", "\%sNext"]', map, map)
+  let prevnext = printf('["normal \%sPrevious", "normal \%sNext"]', map, map)
   execute 'nnoremap <silent> '.map.'Previous :<C-U>exe <SID>prevnext("'.a:cmd.'", "previous", '.prevnext.')<CR>'
   execute 'nnoremap <silent> '.map.'Next     :<C-U>exe <SID>prevnext("'.a:cmd.'", "next", '.prevnext.')<CR>'
   execute 'nnoremap <silent> '.map.'First    :<C-U>exe "'.cmd.'first'.end
@@ -82,7 +82,7 @@ function! s:last_prevnext_cmd(dir) abort
     endif
     return 'normal '.(a:dir ==# 'previous' ? '[' : ']').m
   endif
-  return 'normal '.(a:dir ==# 'previous' ? prevnext[0] : prevnext[1])
+  return (a:dir ==# 'previous' ? prevnext[0] : prevnext[1])
 endfunction
 execute 'nnoremap <silent> <Plug>unimpairedRepeatPrevious :<C-U>exe <SID>last_prevnext_cmd("previous")<CR>'
 execute 'nnoremap <silent> <Plug>unimpairedRepeatNext :<C-U>exe <SID>last_prevnext_cmd("next")<CR>'