MacVim hanging on open file in new tab

[Kevin Burke]

I haven't been able to reproduce this consistently, but I get a
behavior where opening a file in a new tab in MacVim fails. I started
seeing this error maybe beginning about a week ago.

Generally it happens after a terminal has been open for a while and I
open a new tab, then try to load a file in the buffer with `:e`. The
screen becomes unresponsive and does not respond to key commands.
There is nothing on the screen when this happens. I can still open/
close the Macvim menus. Trying to close the window via the menu does
nothing; I have to quit the app and restart.

Here is a stack trace of the last 15 seconds or so before the hang:
http://paste.pocoo.org/show/568246/ After the freeze the logging to
terminal just stopped and the terminal prompt appeared again.

Here are some possible culprits, ordered by how likely I think they
are:

- 3rd party plugins, including syntastic and rainbow highlights.
- my .vimrc file. I tried putting echo's in to see if it was failing
mid-load, but the .vimrc file loads fine. Also, the freeze only
happens when I load the 3rd or 4th file into a buffer, and the vimrc
doesn't look like it's running again.
- using zsh. I'm not sure what about zsh would cause the freeze but
it's possible.
- editing files across a symbolic link
- downloading Snow Leopard updates - currently running 10.6.8 with
version 53 of MacVim.

[björn]

First of all you should try the latest snapshot and see if you run
into the same problems. The Snow Leopard snapshot is provided by Alex
Lovell-Troy:

https://github.com/alexlovelltroy/macvim/downloads

Failing that I'd suggest you start by disabling all your plugins and
then re-enabling them one at a time until you find out which one is
causing you grief (assuming the freeze doesn't happen with no
plugins).

Björn