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Re: regular expressions
Greetings,
On Thu, 29 Jan 2004, Joe English wrote:
> David Tolpin wrote:
>
> > Providing a structured syntax, similar to that for XML, would help reading an
> > d debugging
> > them, for example,
> >
> > s-pattern="""
> > comment = "\(([^\(\)\\]|\\.)*\)"
> > atom = "[a-zA-Z0-9!#$%&'*+\-/=?\^_`{|}~]+"
> > atoms = atom "(\." atom ")*"
> > [...]
> >
> > Why isn't it done?
>
>
> HyLex used a similar syntax for regular expressions.
> I've always wondered why the idea never caught on elsewhere.
It probably didn't come from HyTime, but scsh (a scheme shell) has
legible regexps: http://www.scsh.net/docu/html/man-Z-H-7.html#node_sec_6.3
It'd probably be very straightforward to produce the sort of
structured, legible, syntax that David is talking of.
> (Then again, none of the ideas from HyTime ever really
> caught on...)
Not directly, but I suspect quite a few sneaked in the XML back door.
Norman
--
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Norman Gray http://www.astro.gla.ac.uk/users/norman/
Physics and Astronomy, University of Glasgow, UK norman@a...
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