Re: can gnuplot do UTF-8 at all? [was: pm3d for emf terminal and point types]

[Ethan M. <merritt@u.washington.edu>]

On Wednesday 13 December 2006 04:23 am, Mojca Miklavec wrote:
>
> TeX-based pseudo-terminals support Unicode "without any problem".

Except for the problem that TeX itself doesn't know about Unicode,
right?  I gather that there are several recent TeX variants that do
handle it, though.  XeTeX seems promising, but maybe it's OSX only.
You mention ConTeXt also, which I still haven't found the time to
investigate, but at least it comes by default as part of the texmf
rpm I'm using.

> But one more question, which might be independent from the terminal
> in use. How does gnuplot calculate the label width when utf-8
> encoding is used?

This is done by the routine estimate_strlen() in term.c,
which basically just calls strlen().

So yes, you have a very good point there.  
It should probably use wcslen() instead.

But then we will have to wrap it with tests for locale support.
I wonder whether  #ifdef HAVE_LOCALE is sufficient to guarantee that
wcslen() is available, or whether the configuration script would
have to test for it specifically.

-- 
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle WA