Hey guys, I (may have) found a bug. I need someone to duplicate it for me.

Basically, I can make Vim crash in a ruby script while adding a string method. 
It only happens on *some* auto-completion though - not all. For example:

If I were to try step 2 in this verification, Vim would behave as expected:
https://github.com/vim-ruby/vim-ruby/wiki/VimRubySupport#verifying-installation


What steps will reproduce the problem?
1. Use my .vimrc setup
2. Attempt to add an 11th line like the 10th (test_fail.rb; entered; not Yp)
3. CTRL-C will not get you out of it. The terminal session must be closed.

What is the expected output? What do you see instead?
The expected result: vim should not hang/crash.
CTRL+C will not save me at this point. They terminal session (tab) must be 
closed manually.

What version of the product are you using? On what operating system?
Mac OS X (10.9); vim called within Terminal.app
$ vim --version
VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Aug 26 2014 14:31:09)
...

Please provide any additional information below.

The Background: I have a fairly customized vim configuration that's been 
working without error for years on both Linux and OS X (10.8/9). This problem 
is occurring on the Mac; I've attempted the same test on Linux (Fedora 20 with 
the latest updates); Vim behaves as expected. I use the latest version of Vim 
from Homebrew and I only use it from within Terminal.app.

$ brew install vim --override-system-vim --with-features=huge --disable-nls 
--enable-interp=lua,ruby,perl,python

The problem: I'm learning Ruby. At some point I copy/paste some code into the 
test_fail.rb script and :wq - no worries. Follow the steps above to reproduce 
the problem. Again, Vim behaves as expected with test_pass.rb.

I've isolated this down to AutoComplPop; I should include that I've used it for 
years without error. Since I've tripped over this problem I've also attempted 
with YouCompleteMe: I get the same failing result with both.

I've included some (attachment) files in Google Drive:
https://drive.google.com/open?id=0BwQ-8Qa4wxXNekM1SmRSVUZNS2M&authuser=0
  bugreport.txt
  test_pass.rb (vim behaves well with ruby)
  test_fail.rb   (vim does not behave well with ruby)
  my vim setup: .vimrc and .vim/


I suspect this has something to do with the compiler provided with the Mac OS 
but I'm not sure how to verify that.

Thanks in advance,
TT

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