ruby: (some) builtin functions not available with ruby 3.3

[u3shit]

Describe the bug

Upgrading my ruby from 3.1 to 3.3.1, my very simple script stopped working because it couldn't find Kernel.loop. (But it's also easily reproducible from /ruby eval).

Steps to reproduce

1. /ruby eval [].shuffle or /ruby eval loop { break } or call any other function defined in .rbinc files.

Current behavior

21:51:28 =!= | ruby: error: (eval at (eval at eval:34):7):1:in `script_ruby_eval': undefined method `shuffle' for an instance of Array (#<Class:#<NoMethodError:0x00007f4b6cdd6d78>>)
21:51:28 =!= | ruby: error:      from (eval at eval:34):7:in `module_eval'
21:51:28 =!= | ruby: error:      from (eval at eval:34):7:in `script_ruby_eval'

Expected behavior

Built-in ruby functions work...

Suggested solutions

No response

Additional information

No response

WeeChat version

4.2.2

What OS are you using?

Gentoo

On which terminal are you running WeeChat?

No response

Which terminal multiplexer are you using?

No response

[u3shit]

Looks like ruby_process_options need to be called now, it calls a bunch of (private) setup functions, something sets up these builtin methods. As a very quick and dirty workaround, adding

char* dummy_argv[] = { "ruby", "-enil", NULL };
ruby_process_options(2, dummy_argv);

after ruby_init seemingly fixes the problem... But some MRI wizard can probably come up with a better solution.