Allow unlimited subpattern name length about pcre2

[PhilipHazel]

Well, yes, the subpattern name IS compiled to a number, but during compiling there is set up a table to translate names to numbers. The table is also output at the start of the compiled pattern because the interpreter uses it to find all the numbers associated with a given name when doing condition testing. This all originates in PCRE1 when named subpatterns were added. No doubt if I were starting again from scratch it might be done differently. Anyway, I set up the table with fixed-length entries (the length of the longest name), and I chose a maximum length just in case some person or fuzzer feeds in a stupidly long name. I never expected anybody to use names longer than a few characters. It just goes to prove that second-guessing what people will do never works. There is a macro called MAX_NAME_SIZE that controls this. I would not object to increasing this to 64 or even 100.

[mvorisek]

I opened this issue as I hit the limit when extending this https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/blob/6e1f7837e4/src/DocBlock/TypeExpression.php#L83 complex regex for even more complex PHPDoc grammar.

Raising the limit to 100 would be great and it would allow to name the groups "more consistently based on the parsed grammar naming" - in the mentioned regex, I had to use callable_template_inner_d_types instead of callable_template_inner_default_types :).

[PhilipHazel]

I have raised the limit to 128 in HEAD. There is unlikely to be another release for quite some time (10.43 being very recent). If you want to patch 10.43, note the that definition is in src/config.h, which is generated by autoconf from configure.ac.

[mvorisek]

Thank you very much for making this great project perfect!