Quickfix split should occupy full width?

[mislav]

I've got vertical splits. When I :Dispatch in tmux, the lower tmux pane occupies the full width of the terminal. However when that tmux pane is closed and quickfix is opened, that window occupies only half the width in Vim.

I feel that you tried to replace the tmux pane with quickfix window in a way that there's an illusion they're the same split. If so, this definitely breaks that illusion.

[molok]

If you want the quickfix window always on the bottom taking the whole horizontal space you can put this in your vimrc:

au FileType qf wincmd J

[tpope]

I think forcing :botright is the right thing to do here. Even before dispatch.vim, having the quickfix window pop up within a vertical split has always irked me.