[HarfBuzz] List OpenType features

[Nikolay Sivov]

On 18.11.2015 15:27, Edu García wrote:
> Thank you!
>
> That's the one I suspected. However, as its second parameter, it wants a
> "hb_tag_t table_tag". What is that table tag, and how do I get it?

There's only two possible tags you can use in this case - HB_OT_TAG_GSUB 
and HB_OT_TAG_GPOS.

  Also,
> it asks for an offset, but I guess this is so you can get the list of
> features in batches (so I can ask for 10 features, then another 10, etc)
>

Guess so, if you don't want to allocate for some reason. From quick look 
it seems that if you call it with NULL 'feature_count' it will return 
how many features it got for a table you specified.

> Again, thanks!
>
> On Wed, Nov 18, 2015 at 11:25 PM, Nikolay Sivov <bunglehead at gmail.com
> <mailto:bunglehead at gmail.com>> wrote:
>
>     On 18.11.2015 15:21, Edu García wrote:
>
>         Hi,
>
>         What function(s) should I use to list all the features a particular
>         OpenType font supports?
>
>
>     Probably hb_ot_layout_table_get_feature_tags().
>
>
>         Thanks
>
>
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