Grapheme clusters and east asian width

[Eli Zaretskii]

> Date: Thu, 17 Sep 2015 16:51:03 +0100
> From: Daniel Bünzli <daniel.buenzli at erratique.ch>
> Cc: Richard Wordingham <richard.wordingham at ntlworld.com>, unicode at unicode.org
> 
> > > Date: Thu, 17 Sep 2015 13:27:31 +0100
> > > From: Richard Wordingham <richard.wordingham at ntlworld.com (mailto:richard.wordingham at ntlworld.com)>
> > >  
> > > The best estimator is probably the POSIX function wcswidth().
> > Only on glibc-based systems, I'm quite sure.
> 
> Is there a formal definition of the algorithm used ? This [1] is not very helpful.

They just use a table of values, AFAIK.