From: William James <w_a_x_man@...>
Date: 2008-12-15T15:52:40+09:00
Subject: Re: Help with an "easy" regular expression substitution

I単aki Baz Castillo wrote:

> Hi, I'm getting crazy to get a theorically easy substitution:
> 
> I've a file with a header:
>   X-Level: ***
> where the number of "*" is variable (from 0 up to 10).
> 
> And I just want to replace "*" by "X", so get:
>   X-Level: XXX
> 
> I don't get it since I don't know how to replace ANY number of "*"
> with the same number of "X" just in the header "X-Level".
> 
> Any help? Thanks a lot.

s = "X-Level: ***"
    ==>"X-Level: ***"
s[ /X-Level: (\**)/, 1 ] = $1.gsub("*", "X")
    ==>"XXX"
s
    ==>"X-Level: XXX"