SoftPencil on, then off, then on again -breaks navigation mappings about vim-pencil HOT 8 OPEN

Thanks for the report. I've actually run into this myself but never managed to track down what is causing it even as far as you have. I don't have the bandwidth to sit and mess with it right now, but if anybody does have ideas and finds this a PR would be welcome!

I don't typically turn Pencil on or off except once based on the file type on open so this is rare, but I have noted that g prefixed motions are occasionally getting screwed up.

from vim-pencil.

I have always had this problem as well. The only nuance I have:

If you enter pencil mode :PencilSoft and then leave :PencilOff… if you enter it again :PencilSoft the mappings are broken… if you leave the second time and re-enter a third time… the mappings are restored!

It's always alternate… the solution has been for me to quickly "restart" it, but I've never been able to track down why the mappings break the second time.

from vim-pencil.

No worries!

For me, the use case is that I want to have a "Prose Mode" in vim that is tied to when I enter/leave the Goyo mode from goyo.vim

And when using Goyo, there are a lot of reasons to switch in and out, so Pencil was getting toggled a lot.

For anyone else who might be wanting to do the same, my solution was to drop pencil and manually set up/tear down the mappings and settings I want, like so:

function! StartProse()
  setlocal linebreak
  setlocal wrap
  nnoremap <buffer> j gj
  nnoremap <buffer> k gk
  inoremap <buffer> . .<c-g>u
  inoremap <buffer> ! !<c-g>u
  inoremap <buffer> ? ?<c-g>u
  inoremap <buffer> , ,<c-g>u
  inoremap <buffer> ; ;<c-g>u
  inoremap <buffer> : :<c-g>u
endfunction

function! StopProse()
  setlocal nolinebreak
  setlocal nowrap
  unmap <buffer> j
  unmap <buffer> k
  iunmap <buffer> .
  iunmap <buffer> !
  iunmap <buffer> ?
  iunmap <buffer> ,
  iunmap <buffer> ;
  iunmap <buffer> :
endfunction

autocmd! User GoyoEnter nested call StartProse()
autocmd! User GoyoLeave nested call StopProse()

from vim-pencil.