Question

I am using Vim and GVim on a Win32 platform (alas, Windows is against my nature, but it’s a work machine). I have noticed in GVim that when it returns to focus (either using the mouse, or via ALT+TAB) there is a brief lag of 2-3 seconds before the cursor resumes flashing and it becomes usable. I definitely do not experience this in when running Vim from the console. I have not it experienced on Linux boxes either, but then I do not edit such long files on my home machine.

Previously I also experienced the slow behaviour when switching between splits within a GVim session (using <c-w><c-w>). Some of the files I edit can be very long, and I have a custom statusline which requires some processing, and GVim was apparently recalculating the highlighting, folding and statusline every time. I was able to avoid that by setting

set eventignore=BufEnter,WinEnter,BufWinEnter

But I still have the problems when the GVim window itself regains focus. Adding set eventignore+=FocusGained makes no difference. Is there any way to persuade GVim to return to focus more smoothly?

Thanks for your help.

Answer 1

I’m guessing you have any of the following lines on a network drive (in a corporate environment, the Home drive (My Documents etc.) is frequently on a fileserver…

• the file itself – this might not be fixable
• the swapfile (:se noswap to disable, :se directory="C:\blabla" to relocate)
• the undofile (:se noundofile to disable, :se undodir="C:\blabla" to relocate)

I explicitely moved all of these files to a local folder on my Win32 setup. (Hey, I’m also the guy known to mutilate the virus checker enough to disable on-access scanning just to speed things up a little).