ruby : Add ruby binding for max_len

[adamdebono]

The max_len/ml parameter was missing in the Ruby binding.

[KitaitiMakoto]

@adamdebono
Thank you! Seems almost okay. I added a comment, and can you add test for max_len in test_params.rb?

[adamdebono]

Thanks @KitaitiMakoto I've made those changes.

I wasn't able to get the tests running so I haven't confirmed if they pass, although I've reused the same code as the other tests so I assume they do.

I am attempting to use rake test as is mentioned in the readme, but I'm getting a segfault. I've attached the log, but it looks like the problem is in test_callback.rb#125 - I had noticed I was getting a segfault in my application if I attempted to set that multiple times, presumably this is the same problem.

rake_test.log

[KitaitiMakoto]

Ah, that segfault is caused by Ruby 3.4.1's bug. Tests should succeed for Ruby 3.4.2 or later.

Your code has no problem. Will merge it.