Re: cairo and character encoding issues

[Allin C. <cot...@wf...>]

On Sat, 24 Nov 2007, Ethan A Merritt wrote:

> On Saturday 24 November 2007 11:05, Timothée Lecomte wrote:
> > Allin Cottrell a écrit :
> > >> I am thinking that regardless of any possible bugs in the cairo 
> > >> processing, we should be consistent and always call 
> > >> setlocale(LC_CTYPE,"").
> > > That makes sense to me: maybe in init_locale?
> > I agree with that. Why not LC_ALL by the way ?
> 
> OK. I have added setlocale(LC_CTYPE,"") to init_locale().
> I also added Allin's pre-validation of strings to see if they conform
> to UTF-8. The test doesn't really prove the string is UTF-8, but I
> can't think of any non-contrived cases where this would be a problem.

Thank you for doing that.

> Neither of these patches are strictly speaking necessary. The 
> same result could be accomplished by putting "set encoding 
> locale" in ~/.gnuplot.

Not quite the same.  One of the attractions of a target that 
accepts UTF-8 is that files intended for that target and encoded 
in UTF-8 can be shared across platforms, regardless of the local 
encoding.  

For instance if I'm on an ISO-88959-1 platform and I download a 
UTF-8-encoded gnuplot source file to generate a plot using one of 
the cairo-based terminals, it should now work fine.  Before, it 
would fail with a confusing error message (probably a different 
confusing error message depending on whether or not I had "set 
encoding locale" in my ~/.gnuplot).

Allin Cottrell