Re: NS font case sensitivity

[Adrian Robert <adrian.b.robert@gmail.com>]

On Jun 19, 2009, at 8:24 AM, Jason Rumney wrote:

> Adrian Robert wrote:
>> Jason Rumney <jasonr <at> gnu.org> writes:
>>
>>
>>> Is there a good reason why the entries in face-alternative-font- 
>>> family-alist need to be case sensitive
>>> on NS when they are not on other platforms?
>>>
>>
>> Font family matching is case sensitive in the API used
>> by the NS font driver.
>>
>
> I'm not sure that is relevant here. This variable (actually it is  
> exposed to lisp as face-font-family-alternatives) is only used when  
> it has already been determined that the named font does not exist  
> in the system, so for example on other platforms if some lisp code  
> requests the font "Sans Serif" or "sans serif" and a font by that  
> name is not defined, "helv", "helvetica", "arial" and "fixed" are  
> tried as alternatives. But on NS, that list will only be used if  
> the lisp code requests that font with matching case.

Logically, this behavior is consistent with family names being case  
sensitive -- the user customizing face-font-family-alternatives may  
want to specify different alternative lists for different family  
names, even if they differ only in their case.  But practically, I  
doubt the situation will come up in that way -- so we might as well  
remove the ifdef to streamline the code if that is best.