BufReadPost autocommand not triggered after grep

[Konfekt]

After :grep ... the quickfix window opens up and displays the results by the autocmd

  autocmd QuickFixCmdPost grep cwindow

However, the BufReadPost autocmd of quickfix-reflector is not
triggered. Only after closing and reopening the quickfix window.

How about triggering the BufReadPost autocmd directly after the
quickfix windows opens for the first time?

[stefandtw]

Try

  autocmd QuickFixCmdPost grep nested cwindow

See :h autocmd-nested

[Konfekt]

Thank you, that's nailed it. Has been bugging me for ages.

[ronakg]

I have the same issue when I'm using Ack to search across files. I need to close the quickfix window and open again using cwindow for the plugin to work.

I'm executing Ack like following -

nnoremap <Leader>vv :silent Ack! -k <cword> .<CR>

[Konfekt]

Does it work without silent ?

You need to know what Ack does. Is it coming from a plugin? If so, which one?

[stefandtw]

I could reproduce the problem using the option in your vimrc
let g:ack_use_dispatch=2

So this executes ack in the background somehow. But I don't know how it actually fills the quickfix list. I'm guessing it either calls setqflist() directly or uses autocmds internally without nesting. Either of those would make it impossible for quickfix-reflector to notice a change in the quickfix list. Nothing I can do really.

The easy way to make it work is not to use the dispatch mechanism. Another option might be to find a way how you can call copen automatically after the quickfix list has been filled. This would guarantee quickfix-reflector to trigger.

[Konfekt]

Regarding the latter option, wouldn't autocmd QuickFixCmdPost * nested cwindow achieve that?

[stefandtw]

That's definitely worth a try! Maybe use copen instead of cwindow to make sure it's opened again, since the ack plugin already seems to open the quickfix window before.

[ronakg]

autocmd QuickFixCmdPost * nested copen

works well. Removing silent didn't help.