Re: [PATCH v2 0/8] grep: PCRE JIT fixes + ab/no-kwset fix

[Junio C Hamano <gitster@pobox.com>]

Ævar Arnfjörð Bjarmason  <avarab@gmail.com> writes:

> 1-3 here are a re-roll on "next". I figured that was easier for
> everyone with the state of the in-flight patches, it certainly was for
> me. Sorry Junio if this creates a mess for you.

As long as I can just apply all of them on top of no-kwset and keep
it a single topic, it wouldn't be too much of a hassle.

> 4-8 are a "fix" for the UTF-8 matching error noted in Carlo's "grep:
> skip UTF8 checks explicitally" in
> https://public-inbox.org/git/20190721183115.14985-1-carenas@gmail.com/
>
> As noted the bug isn't fully fixed until 8/8, and that patch relies on
> unreleased PCRE v2 code. I'm hoping that with 7/8 we're in a good
> enough state to limp forward as noted in the rationale of those
> commits.

Yikes.  Perhaps we should kick the no-kwset thing out of 'next' and
start from scratch?  It does not sound that the world is ready yet.

But that is just a knee-jerk reaction before reading the actual
patches.  Let's see how they look ;-)

Thanks.

> Ævar Arnfjörð Bjarmason (8):
>   grep: remove overly paranoid BUG(...) code
>   grep: stop "using" a custom JIT stack with PCRE v2
>   grep: stop using a custom JIT stack with PCRE v1
>   grep: consistently use "p->fixed" in compile_regexp()
>   grep: create a "is_fixed" member in "grep_pat"
>   grep: stess test PCRE v2 on invalid UTF-8 data
>   grep: do not enter PCRE2_UTF mode on fixed matching
>   grep: optimistically use PCRE2_MATCH_INVALID_UTF
>
>  Makefile                        |  1 +
>  grep.c                          | 68 +++++++++++----------------------
>  grep.h                          | 13 ++-----
>  t/helper/test-pcre2-config.c    | 12 ++++++
>  t/helper/test-tool.c            |  1 +
>  t/helper/test-tool.h            |  1 +
>  t/t7812-grep-icase-non-ascii.sh | 39 +++++++++++++++++++
>  7 files changed, 80 insertions(+), 55 deletions(-)
>  create mode 100644 t/helper/test-pcre2-config.c