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From: | ken |
Subject: | Re: error in replace-match: "args out of range" |
Date: | Sat, 09 Apr 2011 08:35:38 -0400 |
User-agent: | Thunderbird 2.0.0.24 (X11/20101213) |
On 04/09/2011 02:44 AM PJ Weisberg wrote: > On 4/8/11, ken <gebser@mousecar.com> wrote: >> On 04/07/2011 07:25 PM Tim X wrote: >>> This was my point of warning. It is quite possible to have >>> regexps where sub expressions are not found, but the overall regexp >>> succeeds. >> I'm having a hard time with that concept. Is there a small bit of >> example code you could show it with? > > "I am\\( not\\)? a fish." > > -PJ And on what sort of string would that RE match but the subexpression have the value nil (as opposed to the null string "")?
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