[luatex] Luaotfload still cannot embed several new CJK fonts in Mac OS X 10.11 El Capitan

[Yusuke Terada]

I've made a font for testing on Kazuki's advice using AFDKO.

You can download it from here:
https://dl.dropboxusercontent.com/u/5807100/SourceHanSans-Medium-Reduced.ttc

If you compile the attached luaotfload_test.tex with plain-LuaTeX 0.81.0, you will get this error:
<./SourceHanSans-Medium-Reduced.ttc(SourceHanSans-Medium:-1)Invalid TTC index number

After applying the patch Kazuki submitted yesterday to fontloader, this source can be compiled correctly.

Sincerely,

Yusuke Terada

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> 2015/10/09 11:20?Kazuki Maeda <kmaeda at kmaeda.net> ?????
> 
> On Fri, 9 Oct 2015 00:03:29 +0200
> Hans Hagen <pragma at wxs.nl> wrote:
>>> You can use the Source Han Sans font for test because it is also
>>> available in the OTC format.
>>> 
>>> https://github.com/adobe-fonts/source-han-sans/releases
>> 
>> those fonts work ok (at my end), the problem probably relates to
>> filenames as well as fontnames in some non-latin encoding
> 
> SourceHanSans-Medium.ttc has the following metadata:
> 
> ...
> ["fontname"]="SourceHanSans-Medium",
> ...
> 
> and four subfonts:
> 
> (0):
>   ["postscriptname"]="SourceHanSans-Medium",
> (1):
>   ["postscriptname"]="SourceHanSansK-Medium",
> (2):
>   ["postscriptname"]="SourceHanSansSC-Medium",
> (3):
>   ["postscriptname"]="SourceHanSansTC-Medium",
> 
> In this case, ("postscriptname" of the subfont 0) == ("fontname" of SourceHanSans-Medium.ttc).
> Therefore, "Invalid TTC index number" error does not occur.
> If you delete subfont 0 from the ttc, you may get the error.
> 
> 
> Best regards
> Kazuki Maeda