From: William Morgan <wmorgan-ruby-talk@...>
Date: 2010-05-10T22:45:35+09:00
Subject: Re: wcswidth, ruby 1.9, and string encodings

Reformatted excerpts from Tanaka Akira's message of 2010-05-09:
> I wrote such code in my terminfo binding.
> http://github.com/akr/ruby-terminfo

Very nice. It works when I use your git version. But the latest gem
(v0.1.1) doesn't seem to have wcswidth.

> I used rb_locale_encoding() to convert to LC_CTYPE as follows:
> 
>   str = rb_str_encode(str, rb_enc_from_encoding(rb_locale_encoding()), 0, Qnil);

Perfect, that's what I was missing.

I need one other bit of functionality too: the ability to get a
substring of a specific display width. I assume that is beyond the scope
of your terminfo package, so I am probably going to wrap the two methods
up into a gem. But if you're planning on adding such a thing to
ruby-terminfo, let me know, and I will just use that instead.

Thanks for your help!
-- 
William <wmorgan-ruby-talk@masanjin.net>