From: Stefano Crocco <stefano.crocco@...>
Date: 2008-01-27T04:22:33+09:00
Subject: Scripting vim using ruby interface

I know this should be posted to the vim mailing list, but I wasn't able to 
subscribe to it, so I'm posting here instead.

I've been trying to write a vim script using vim's ruby interface, but I keep 
coming across weird errors in completely unexpected places. A very simple 
example is the following: I give the following command (all in one line, of 
course):

:ruby require 'pathname'; 
Pathname.new('/home/stefano/Desktop/test_tools/').realpath

This command, which works perfectly when executed in irb or using ruby -e or 
from a ruby script, when called from vim gives an error:

SystemStackError: /usr/lib/ruby/1.8/pathname.rb:266:in `chop_basename': stack 
level too deep.

Moreover, these errors seem random: I can run a piece of code once and it 
works; i run it again later and it gives an error like the above one (it's 
always a SystemStackError). Yet, every time this happens, it's always in the 
same position.

Does anyone know if there's a reason for this behaviour, such as some kind of 
restriction to the ruby code you can call in ruby? Has anyone succeeded in 
using ruby interface? I've searched google, the vim mailing list and vim 
documentation, but I found nothing.

Thanks in advance

Stefano