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Regular Expressions

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Posted by Zeppy   USA  (15 posts)  [Biography] bio
Date Thu 26 Apr 2001 06:30 PM (UTC)
Is it safe to assume that regular expressions within MUSHClient are the same expressions (and syntax) that are specified by MS in there VBScript documentation?

Again, an obvious question, but I want to make sure...
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Posted by Nick Gammon   Australia  (21,677 posts)  [Biography] bio   Forum Administrator
Date Reply #1 on Fri 27 Apr 2001 05:23 AM (UTC)
Regular expressions are now done using "Perl-Compatible regular expressions". These are documented at some length in the text file:


This is part of the MUSHclient install.

I doubt they are completely compatible with VBscript - these were written by someone to be compatible with Perl, not Visual Basic. After all, not everyone will choose VBscript as their scripting language, they might use JScript or PerlScript, or use regular expressions with no script language at all.

A quick glance at the VBscript regexp specs seems to indicate it is very similar - however the PCRE implementation includes some extra stuff, eg. assertions about something not being there.

eg. You might want to match on <someone> waves where <someone> is not Nick.

- Nick Gammon

www.gammon.com.au, www.mushclient.com
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