What PCRE version?

[RedCMD]

What version of PCRE does Linguist use?
the docs link the PCRE website
which then goes on to state that there are many PCRE versions...

EDIT:
tools/grammars/Dockerfile states https://github.com/vmg/pcre

linguist/tools/grammars/Dockerfile

Line 9 in edbbb74

cd /tmp && git clone https://github.com/vmg/pcre && \

PCRE v8.36
https://github.com/vmg/pcre/blob/f2b1a56ddb0a3b9ffe42f45fde2a0d1318eadf90/ChangeLog#L4

[lildude]

🤔 that document could do with tweaking as Linguist and the syntax highlighting engines are completely independent and that only applies to the syntax highlighting engine.

The syntax highlighting engine that parses the TextMate compatible grammars uses PCRE (aka the 8.45 one, not PCRE2) and it pulls this in from Debian's libpcre3-dev pkg installed on the host machine. This is lightly enforced by the grammar "compiler" too. There are no plans to switch to PCRE2.

Linguist itself is written in Ruby so you could use Oniguruma regexes, however when it comes to any of the regexes in the .yaml files, we need re2 compatible regexes as those files are read by other libraries, like go-enry, which means they need to be safe for third party consumption and remain performant.

[RedCMD]

thanks for the quick response

I had found out that Linguist uses PCRE via RedCMD/YAML-Syntax-Highlighter#3

so I'm trying to add diagnostics to my TextMate extension
to show if a TextMate grammar is compatible with Linguist or not
but didn't know what version was being used
cause there is some differences https://stackoverflow.com/questions/70273084/regex-differences-between-pcre-and-pcre2

whats up with the max 32kb PCRE regex size limit?

[lildude]

whats up with the max 32kb PCRE regex size limit?

This was implemented a long long time ago, but I believe this is a PCRE enforced limit that is affected by the compile-time options.