Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.dougwise.org!nntpfeed.proxad.net!proxad.net!feeder1-2.proxad.net!usenet-fr.net!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!talisker.lacave.net!lacave.net!not-for-mail From: 7stud -- Newsgroups: comp.lang.ruby Subject: Re: Match a pattern multiple times, returning matches, captures and offset? Date: Thu, 7 Apr 2011 14:04:14 -0500 Organization: Service de news de lacave.net Lines: 32 Message-ID: <6d45afa0bb38b1d865423b633e201ee9@ruby-forum.com> References: <4D9B4FBD.9020602@fischer.name> NNTP-Posting-Host: bristol.highgroove.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Trace: talisker.lacave.net 1302203083 83113 65.111.164.187 (7 Apr 2011 19:04:43 GMT) X-Complaints-To: abuse@lacave.net NNTP-Posting-Date: Thu, 7 Apr 2011 19:04:43 +0000 (UTC) In-Reply-To: X-Received-From: This message has been automatically forwarded from the ruby-talk mailing list by a gateway at comp.lang.ruby. If it is SPAM, it did not originate at comp.lang.ruby. Please report the original sender, and not us. Thanks! For more details about this gateway, please visit: http://blog.grayproductions.net/categories/the_gateway X-Mail-Count: 381145 X-Ml-Name: ruby-talk X-Rubymirror: Yes X-Ruby-Talk: <6d45afa0bb38b1d865423b633e201ee9@ruby-forum.com> Xref: x330-a1.tempe.blueboxinc.net comp.lang.ruby:2483 Brian Candler wrote in post #991406: > 7stud -- wrote in post #991338: >> You can also get relative beginning offsets like this: >> >> str = "_foo_ _bar_" >> >> str.scan(/_(\w+)_/) do |curr_match| >> md = Regexp.last_match >> whole_match = md[0] >> captures = md.captures >> >> captures.each do |capture| >> p [whole_match, capture, whole_match.index(capture)] >> end >> >> end > > Using 'index' doesn't work if you have multiple captures which have the > same pattern, or one is a substring of the other. > > Use captures.begin and captures.end instead. > begin() and end() are the two elements of offset(), which we've already discussed above: The idea was to get the relative offsets within a match, not the absolute offsets within the string. -- Posted via http://www.ruby-forum.com/.