Fix#2062: restore g:airline_focuslost_inactive behaviour.
Only ignore focusgained events on Windows. If there are more problematic
platforms, we'll add them later.
Instead of ignoring the next x FocusGained events whenever we do call
system(), ignore them for the current second. That allows us to put a
hard limit on the duration of the ignore.
This seems like a much better solution than the previous one because it
also prevents ignore events from building up (s:focusgained_ignored was
often greater than 5).
Test (gvim 8.2.140 on Win10)
gvim.exe ~/.vim/bundle/airline/autoload/airline/extensions/branch.vim
:Gedit HEAD
check several parents and no regression of looping behaviour from #2053.
:let g:airline_focuslost_inactive = 1
:split
alt-tab several times and statusline is correctly dimmed and restored
each time.
closes#2029
airline#util#focusgain(1) was called too soon -- it's called before vim
loses focus and not after it gains focus. Instead, we ignore the next
FocusGained event.
Instead of requiring each version control plugin to modify airline to
show the current branch, provide a customization function we can check
instead.
Following the example of airline_theme_patch_func, you define the
variable like so:
let g:airline#extensions#branch#custom_head = 'david#svn#get_branch'
Custom functions should cache their value. They may need an autocmd to
invalidate their cache:
" Use a buffer-unique group name to prevent clearing autocmds for other
" buffers.
exec 'augroup svndavid-'. bufnr("%")
au!
autocmd BufWinLeave <buffer> unlet! b:svndavid_branch
augroup END
This change lets me integrate with vc.vim (I couldn't get VCSCommand
working for svn) or write my own thing for perforce.
Additionally, always load whole file and check for existence.
Instead of determining up front whether various scm plugins are
installed, check for them on use so they can be added after this script
is sourced.
This also mitigates the problem of checking for existence of autoload
functions (which are not loaded by exist()). Since we're checking
root-level functions, they're likely to be loaded once we're using any
part of the plugin.
David Briscoe