varnish and pcre2

[Geoff Simmons]

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On 11/22/2016 11:22 PM, Nils Goroll wrote:
> On 22/11/16 14:41, David CARLIER wrote:
>> You probably thought of it but is there any plan (next year ?) to
>> implement pcre2 support in varnish ?
> 
> IIRC Geoff has a pcre2 version of
> https://code.uplex.de/uplex-varnish/libvmod-re in the works

"In the works" is saying too much, more like kicking around the idea.
Real Soon Now in my Copious Free Time.

I haven't heard any developers talking about pcre2, and I suspect that
support via VMODs for new regex libraries is the most likely path
forward. One of the reasons for introducing VMODs was to lessen the
burden on the main project to add and maintain new features, and it
seems to me that this is a good case for that.

This one, for example, supports use of Google re2:

https://code.uplex.de/uplex-varnish/libvmod-re2

@David, do you have a use case for pcre2? I haven't heard much about
it, for example whether or how much it performs better than original
pcre. Just the fact that the pcre project will be going forward with
pcre2 is a good reason to support it. Any other arguments for it would
help to move the VMOD out of the vaporware column.


Best,
Geoff
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