[HarfBuzz] List OpenType features

[Nikolay Sivov]

On 19.11.2015 0:45, Edu García wrote:
> It worked, as expected :).
>
> However, I'm getting some curious results, and I'm not sure if it's
> because of my C rustiness or the fact that I'm running Harfbuzz with
> Emscripten, but just in case, I'll ask:
>
> With this simple code:
>
> unsigned int count = 80;
> hb_tag_t myResult[count];
> hb_ot_layout_table_get_feature_tags(hb_font_get_face(hb_font),
> HB_OT_TAG_GSUB, 0, &count, myResult);
>
> ...I'm getting exactly 11 copies of every tag inside the myResult array
> (so positions 0-10 contain "aalt", positions 11-21 contain "c2sc", etc).
>
> Is this expected, a bug (I'm using 1.0.6) or am I doing something
> glaringly wrong there?
>
> Thanks, and sorry for the annoying questions :)
>

And if you know what you're looking for specifically, you case use 
hb_ot_layout_language_get_feature_tags().