Statusline is inactive on doautoall command (specifically on session loads)

[itchyny]

The doautoall command causes lightline to misbehave. Specifically the session file contains doautoall SessionLoadPost so this line causes #444, #447. The command doautoall WinEnter also causes the same problem. This is basically caused by the hidden window, lightline should not react to the event of the hidden window. But still I can't find the correct solution because all functions (winnr, bufwinnr, etc) go wrong.

[teoh]

Any updates on this?

[itchyny]

This needs a fix in Vim because Vim script can't tell the difference of normal windows and the autocmd window (I wrote hidden window in the above comment). One solution is exposing the aucmd_win_used variable to Vim script, something like v:aucmd_win_used or expand('<awinused>'). Another solution is exposing the win_unlisted function to Vim script. In any case, we have to write down the reasonable explanation for what we need here.

[sbromberger]

I don't know whether this is helpful, but I'm seeing the same behavior as described in nvim-lua/diagnostic-nvim#32 with two different language servers: Julia and Rust. For me, it's happening with the latest version of neovim master (currently NVIMv0.5.0-554-gdcd6cf5f3).

[itchyny]

Vim finally implemented a way to detect the autocmd window at 8.2.0991, followed by 8.2.0996. So this issue has been closed for Vim 8.2.0996 or later. Please update the version of Vim. We cannot fix for older versions of Vim because there's no way out to detect the autocmd window. For NeoVim users, please wait for the patch to be included to NeoVim or submit the patch yourself. If you still have the issue even if you update both lightline and Vim, that's another problem so please submit a new issue.

[lesar]

I have installed:
VIM - Vi IMproved 8.2 (2019 Dec 12, compilato Jan 08 2021 14:00:27)
Patch incluse: 1-2311

but lightline is not show well after a session load.

there is any workaround?
I resolve putting this:

autocmd SessionLoadpost * call SessionLoadLightLine()
function SessionLoadLightLine()
  :NERDTree
  :wincmd p
  :call lightline#update()
endfunction

best regards
Leonardo