From: Mike Stok <mike@...>
Date: 2010-01-26T03:02:44+09:00
Subject: Re: gsub problem


On Jan 25, 2010, at 12:50 PM, lalawawa wrote:

> Seebs wrote:
>> On 2010-01-25, lalawawa <usenet@ccjj.info> wrote:
>>> irb(main):005:0> a.gsub(/([\'\?])/, '\\\\\1')
>>> => "Can\\'t we\\?"
>> This is probably what you want -- keep in mind that irb will show
>> you escaped backslashes if there's a single backslash in the string.
>> -s
> 
> You're right.
> 
> irb(main):009:0> puts a.gsub(/([\'\?])/, '\\\\\1')
> Can\'t we\?
> => nil
> irb(main):010:0>
> 
> Thanks

You can get rid of a few backslashes if you like:

$ irb --simple-prompt
>> a = "Can't we?"
=> "Can't we?"
>> puts a.gsub(/['?]/) { |c| "\\#{c}" }
Can\'t we\?
=> nil

Mike

-- 

Mike Stok <mike@stok.ca>
http://www.stok.ca/~mike/

The "`Stok' disclaimers" apply.