Re: Re: Using undefined back-references?

Won't do it, I'm afraid, 'cos I actually need to keep that crud, if it exists. Especially if somebody throws me the attributes in a different order:

<e st="obs" num="1" st="ali">

needs to group in the same way. By using ?: the entire intermediate string disappears, and I end up with

<e st="obs,ali">

Which wasn't precisely what I was after. Although it does shut the warning up :-)

--
Tommy
Too stupid to live.
Too stubborn to die.

Comment on Re: Re: Using undefined back-references?

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Re: Re: Re: Using undefined back-references? by fruiture (Curate) on Aug 19, 2002 at 16:31 UTC
How about `((?:\s+[^>])?)\s+ # Optional assorted crud` [download] ? The capturing () is not marked with ? (or ) so it won't be undef, but the non-capturing (?:) is marked with ?, so it can fail to match: in that case the () saves an empty string, not undef. -- http://fruiture.de	[reply] [d/l]