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On 28 October 2017 at 16:48, Steven D'Aprano <steve@pearwood.info> wrote:

On Sun, Oct 29, 2017 at 12:31:01AM +0100, MRAB wrote:

\> Not that I'm planning on making any further additions, just bug fixes
\> and updates to follow the Unicode updates. I think I've crammed enough
\> into it already. There's only so much you can do with the regex syntax
\> with its handful of metacharacters and possible escape sequences...

What do you think of the Perl 6 regex syntax?

https://en.wikipedia.org/wiki/Perl\_6\_rules#Changes\_from\_Perl\_5

If you're going to change the notation, why not use notations similar to what linguists use for FSTs? These allow building FSTs (with operations such as adding/subtracting/composing/projecting FSTs) with millions of states — and there are some impressive optimisers for them also, so that encoding a dictionary with inflections is both more compact and faster than a hash of just the words without inflections. Some of this work is open source, but I haven't kept up with it.

If you're interested, you can start here:

http://web.stanford.edu/\~laurik/

http://web.stanford.edu/\~laurik/publications/TR-2010-01.pdf

http://web.stanford.edu/group/cslipublications/cslipublications/site/1575864347.shtml

etc.

;)

\--
Steve

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