[Varnish] #1106: Document vcl regex

[Varnish]

#1106: Document vcl regex
-------------------------+--------------------------------------------------
  Reporter:  neaj        |        Type:  documentation
    Status:  closed      |    Priority:  normal       
 Milestone:              |   Component:  build        
   Version:  3.0.0       |    Severity:  normal       
Resolution:  worksforme  |    Keywords:               
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Comment(by neaj):

 Strange: when I search in 2.1.5 I don't see the text you quote:

 {{{
 jean at klippie:~/tmp/varnish-2.1.5$ grep Regular man/*
 jean at klippie:~/tmp/varnish-2.1.5$ grep -r "Regular expressions" *
 }}}

 Was it taken out?

 In the FAQ I do get hits:


 {{{
 jean at klippie:~/tmp/varnish-2.1.5$ grep -r "we use PCRE" *
 ...
 doc/sphinx/faq/general.rst:From version 2.1.0 and forward, we use PCRE
 regular expressions,
 }}}

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1106#comment:2>
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