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I'm using MacVim on OSX 10.11 El Capitan, which still has some issues with El Captain's new Split Screen feature – namely, MacVim automatically resizes to 191 columns, taking up most of the screen real estate.

To fix this, I have to manually set columns=95, which works perfectly except that then, the entire vim window goes black. The easiest way to fix that is <C-l> to redraw the screen.

So, I have the following mapping set up in my .vimrc: 

nnoremap <Leader>ss :set columns=95<CR><C-l>

Problem is, the <C-l> command seems to come too soon after the screen is resized, so it remains black and I still have to manually redraw the screen myself. Is there any way to delay the execution of the final <C-l> command by a few ms or so (or, even fancier, to wait until the screen has been fully resized) so that I can do this all in one fell swoop?

Thanks in advance.

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You could use the the builtin sleep function (see :h sleep).

:sleep 2<CR> lets Vim sleep for 2 seconds, :sleep 200m<CR> for 200 milliseconds. There is also the "gosleep" command in normal mode, e.g. 2gs.

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    Brilliant! That did it for me. For anyone interested, here's what my mapping looks like now: nnoremap <Leader>ss :set columns=95<CR>:sleep 5m<CR><C-l>
    – Ryan Lue
    Commented Nov 29, 2015 at 16:18

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