When using vim-gitgutter and fugitive:
The hunks extension and the branch extension work as expected when the
file is first loaded; both parts are added to the statusline.
Once the cursor is moved and stopped for &updatetime ms:
1. The branch extension clears b:airline_head on CursorHold
2. Somehow (?) airline#statusline gets called on CursorHold
3. The hunks extension returns '' when b:airline_head is empty, causing
the hunks to be removed from the statusline.
It doesn't make sense to clear airline_head just because the cursor
moved, and the commit message adding the line doesn't say why:
13297cee03
Commit 174b7e1962 relies on airline_head
being set.
Debug detail:
Executing CursorHold Auto commands for "*"
autocommand unlet! b:airline_head
[...]
continuing in CursorHold Auto commands for "*"
calling function airline#statusline(1)
[...]
line 1: return exists('*airline#extensions#branch#head') && empty(get(b:, 'airline_head', ''))
function airline#extensions#hunks#get_hunks[13]..<SNR>32_get_hunks[14]..<SNR>32_get_hunks_gitgutter[1]..<SNR>32_is_branch_empty returning #1
function airline#extensions#hunks#get_hunks[13]..<SNR>32_get_hunks[14]..<SNR>32_get_hunks_gitgutter returning ''
function airline#extensions#hunks#get_hunks[13]..<SNR>32_get_hunks returning ''
function airline#extensions#hunks#get_hunks returning ''
:au CursorHold
--- Auto-Commands ---
gitgutter CursorHold
* call gitgutter#process_buffer(bufnr(''), 1)
CursorHold
* unlet! b:airline_head
airline_whitespace CursorHold
* call <sid>ws_refresh()
------------------------
Sample vimrc:
set nocompatible
if empty(glob('~/.vim/autoload/plug.vim'))
silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
\ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
autocmd VimEnter * PlugInstall --sync | q | doautocmd WinEnter
endif
autocmd VimEnter *
\ if len(filter(values(g:plugs), '!isdirectory(v:val.dir)'))
\| PlugInstall --sync | q
\| endif
call plug#begin('~/.vim/bundle/')
Plug 'vim-airline/vim-airline'
Plug 'tpope/vim-fugitive'
Plug 'airblade/vim-gitgutter'
call plug#end()
set laststatus=2
set updatetime=250
let g:airline_theme = 'dark'
39c61288e8