From: Nobuyoshi Nakada <nobu@...>
Date: 2007-07-13T16:09:40+09:00
Subject: Re: Proposal: runtime-modifying Kernel methods should be keywords

Hi,

At Fri, 13 Jul 2007 15:55:40 +0900,
Charles Oliver Nutter wrote in [ruby-core:11647]:
> > |- the feature can't be wrapped in another method and maintain the same 
> > |behavior as if it were called in the original context
> > |
> > |All those listed so far fit these criteria.
> > 
> > String#gsub ?
> 
> gsub needs access to internal structures (namely, the in-memory 
> representation of a String) but it can successfully be wrapped with 
> another method. I think both criteria must be met, since being able to 
> wrap a method means it's not doing anything weird with the caller's 
> logical binding/frame/scope.

gsub sets $_ in the caller's scope.

-- 
Nobu Nakada