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Change the USE_LIBPCRE flag from being an alias for USE_LIBPCRE1 to being an alias for USE_LIBPCRE2. When support for v2 was added in my 94da9193 ("grep: add support for PCRE v2", 2017-06-01) the existing USE_LIBPCRE flag was left as meaning v1, with a note that this would likely change in a future release. That optional support for v2 first made it into Git version 2.14.0. The PCRE v2 support has been shown to be stable, and the upstream PCRE project is highly encouraging downstream users to move to v2, so it makes sense to give packagers of Git who haven't heard the news about PCRE v2 a further nudge to move to v2. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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