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Re: [RFC PATCH] pcre: migrate to pcre2
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From: |
Paul Eggert |
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Subject: |
Re: [RFC PATCH] pcre: migrate to pcre2 |
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Date: |
Wed, 13 Oct 2021 15:25:45 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.0 |
On 10/13/21 14:52, Carlo Arenas wrote:
Would performance regressions also
need to be addressed before moving from RFC to PATCH?
Only if they're severe ones, I'd think.
I'm hoping that there will be performance improvements, actually. In
UTF-8 locales PCRE without PCRE_NO_UTF8_CHECK makes two passes over the
input, one to validate and the other to search. If PCRE2 can do this in
one pass somehow, that'd likely be a performance win.
Other than performance, what are the advantages of switching to PCRE2?
These can be briefly summarized (or a pointer to them) in NEWS.
[RFC PATCH v2] pcre: migrate to pcre2, Carlo Marcelo Arenas Belón, 2021/10/13