From: Benjohn Barnes <benjohn@...>
Date: 2006-12-15T08:34:41+09:00
Subject: Re: Restricted capture in Regexp


On 13 Dec 2006, at 17:35, Paul Lutus wrote:
> Is this what you mean? Can you extrapolate this way of approaching the
> problem to solve your own?

I was able to. I had not understood that scan and gsub work  
differently when capturing takes place. Scan seems to have more  
sensible behaviour. I would like gsub's block or second parameter to  
provide an array, and for this to replace the captured parts of the  
regexp, so:

	"axb".gsub(/(.)x(.)/, ['A', 'B'])

would return:
	
	"AxB"

gsub doesn't behave like this, but I imagine it would be possible to  
build a gsub like function that did. :) It would probably need to  
inspect the regular expression given to it with a regular expression.

Thanks everyone,
	Benjohn