[XeTeX] bold small caps, but no regular small caps

Georg Duffner g.duffner at gmail.com
Sat Aug 3 10:54:03 CEST 2013

Am 02.08.2013 18:38, schrieb Khaled Hosny:
> On Fri, Aug 02, 2013 at 12:40:28PM +0200, Georg Duffner wrote:
>> Am 01.08.2013 13:24, schrieb Khaled Hosny:
>>> On Thu, Aug 01, 2013 at 12:06:43PM +0200, Georg Duffner wrote:
>>>> Hi,
>>>> XeTeX’s behaviour in this case is mysterious.
>>>> I tried Mike’s original tex file and got no smallcaps at all. After
>>>> updating Charis to 4.114 (from 4.106) I got the same behaviour as
>>>> him: no smallcaps with regular but with bold yes. When I tried again
>>>> today, there are no smallcaps at all – I suppose, after the update
>>>> on monday, the old version stayed in the cache and confused XeTeX’s
>>>> rendering choice(?), while today the cache was rebuilt without the
>>>> old files, thus XeTeX stays with graphite.
>>> No idea, but having suffered from mysterious Windows font installation
>>> issues before (not with XeTeX), I’ve learned to delete the existing
>>> font(s) before installing a new version.
>> I tried to reproduce the above behaviour by deleting and adding
>> different versions – without success.
> This explains your XDV files; it is identical to what I get here (sans
> the timestamp). So I guess it was some temporary brokeness, but I’m not
> convinced that this is a XeTeX bug, installing multiple versions of the
> same font is strongly discouraged.

OK. But is there an explanation why \textit{\textsc{Text}} is rendered 
upright? Is it  because LaTeX only knows about itshape and scshape but 
no combination of the two?

>>>> And just to make sure that I understand correctly,
>>>> \addfontfeature{RawFeature=+smcp} as in the second line does work as
>>>> expected, because the graphite feature in this case is named "smcp"
>>>> like the OT feature?
>>> Yes (fontspec fails because it first checks if the font supports the
>>> given feature and if not it removes it from font definition, and since
>>> it is looking for OpenType features it finds none when Graphite shaper
>>> is used).
>> Ok. The graphite tag for smallcaps in Charis has been changed to
>> smcp with v4.112, before it was "1058". Shouldn’t the older versions
>> show smallcaps with \addfontfeature{RawFeature=+1058}?
> It should be RawFeature=1058=1; (we now support +tag as a bonus for
> features that has OpenType-like tag names, but for numeric ids only
> the old syntax of id=setting is supported).

I haven’t found that information in the fontspec manual. Is it 
documented somewhere else?

Thanks and best regards,

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