[Chicago-talk] Regular expression question
me at heyjay.com
Sun May 3 09:21:28 PDT 2009
Thank you, that makes sense.
On Sat, May 2, 2009 at 3:04 PM, Jonathan Rockway
<jon-chicagotalk at jrock.us> wrote:
> * On Fri, May 01 2009, Andrew Rodland wrote:
>> On Friday 01 May 2009 06:08:29 pm Michael Potter wrote:
>>> What is the cleanest way to combine these three regular expressions:
>>> $Note =~ s/^Eft /EFT /;
>>> $Note =~ s/ Eft / EFT /;
>>> $Note =~ s/ Eft$/ EFT/;
>> This gives _nearly_ the same behavior and might work within your spec:
>> More complicated and not tested but _should_ match your question exactly:
>> s/(?:^|(?< ))Eft(?:$|(?= ))/EFT/;
> If the \b regex doesn't work, how about s/(^| )Eft( |$)/$1EFT$2/g ?
> That is usually how I represent this sort of operation. (If you want to
> keep part of the input, just capture it and put it into the output
> explicitly. [Perl 5.10 also has \k, but that won't work in this case.])
> There is one difference though. Your original regexs would change the
> Eft blah blah Eft blah blah Eft
> EFT blah blah EFT blah blah EFT
> (since each regex is allowed to match once, and each does).
> Without /g, my regex would change that to:
> EFT blah blah Eft blah blah Eft
> Also, can someone unban my real address from the list? Now that a
> certain Reign Of Terror has ended, I think this is just an
> administrative error.
> Jonathan Rockway
> print just => another => perl => hacker => if $,=$"
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