[XeTeX] scshape + scriptsize + Charis SIL = segmentation fault

[Jonathan Kew]

On 25 Aug 2007, at 9:45 pm, Christoph Unger wrote:

>
> On Sat, Aug 25, 2007 at 09:14:04PM +0200, Marcin 'Qrczak' Kowalczyk  
> wrote:
>> The following document causes xetex-0.996 to crash:
>>
>> \documentclass[a4paper]{article}
>> \usepackage{fontspec}
>> \setmainfont{Charis SIL}
>> \begin{document}
>> \textsc{\scriptsize abc}
>> \end{document}
>
> It does not crash on my setup, and I am using xetex-0.996.

I don't see why it would crash... if this persists, please provide  
more details of your system (what OS?), and a backtrace or similar  
crash report if possible.

>
> --Christoph
>
>>
>> BTW, small caps don't work for all fonts I checked (except Latin
>> Modern). Do they require special support in the font?

Yes, they require support for the OpenType (or AAT) small caps  
feature. Many of the "professional" fonts from Adobe and other  
vendors have this, but most older and/or free fonts don't.

The current release of Charis SIL has a bug whereby it claims to  
support small caps (e.g., if you use the OpenType-info file, or Font  
Properties in Windows), but does not actually have the necessary  
glyphs. I think there's now a mention of this in the Known Issues  
list on the web site.

JK

(Apologies for the delayed response; I've been away and am just  
catching up on unread mail....)