Subject:
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Re: Regular Expression help?
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Newsgroups:
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lugnet.off-topic.geek
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Date:
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Tue, 8 Jul 2003 19:04:37 GMT
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Viewed:
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441 times
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Dan Boger wrote:
> On Tue, Jul 08, 2003 at 05:51:08PM +0000, Andy Lynch wrote:
> > I think this will only find img tags that have a border property, but
> > I need to find img tags that are missing the border property.
>
> doh, of course. However, unless your editor allows to do negative
> lookaheads, I don't think you can use a regexp to find a missing
> border tag.
Ah. I had my little O'Reilly Perl 5 pocket reference out and was playing
with "zero-width positive/negative look-ahead/behind assertion"s before I
began this thread, but since I haven't used them before I wasn't sure how
they worked. In any case my editor's documentation doesn't mention them,
and my experiments wouldn't match anything when I tried to use them, so I
think it is safe to say that they are not implemented.
>
> > actually need to be changed. Also, the same editor that allows us to
> > use RegExpr for searching will allow us to use a syntax similar to
> > perl for replacement text. Of course I need to be able to capture
> > the offending text to be able to creatively replace it! hehehe.
>
> hmmm. One way to do it would be to replace all the img tags that DO
> have the border attribute, with something else, like "<!img" or
> something... then, edit all the remaining img tags (because they are
> missing the border attribute), and then replace all the "<!img" tags
> with "<img" again.
>
> :)
Sigh. Of course, I think that would work. I think the sheer number of
files involved and my insecurity with the regular expression replacement
process prevented my brain from considering that option.
Ok, I've started using this approach and it is working just fine. :-)
Thanks for the extra brain cells.
-Andy Lynch
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Message is in Reply To:
 | | Re: Regular Expression help?
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| (...) doh, of course. However, unless your editor allows to do negative lookaheads, I don't think you can use a regexp to find a missing border tag. (...) hmmm. One way to do it would be to replace all the img tags that DO have the border attribute, (...) (21 years ago, 8-Jul-03, to lugnet.off-topic.geek)
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