[HarfBuzz] unbreaking mixed-up khmer fonts

[Jonathan Kew]

On 20/11/12 17:40, Jonathan Kew wrote:
> On 20/11/12 17:06, Behdad Esfahbod wrote:
>> On 12-11-20 10:22 AM, Jonathan Kew wrote:
>>>
>>> I'm becoming increasingly convinced we need to bite the bullet and
>>> reintroduce
>>> explicit Ra support for fonts that lack 'pref'. Sigh.
>>
>> Umm'k.  Walking in this morning I was thinking that maybe checking for
>> 'pref'
>> would do it.  But if not, then I'll bring back fallback 'pref'.  May
>> not get
>> to it till the weekend though.
>
> Yeah, I got to thinking the same thing, and so far it's looking
> promising... instead of saying we *won't* use indic if there's liga,
> let's say we'll *only* use indic if there's pref.
>
> AFAICT, using the attached patch,

I mean that patch, modulo fixing the parens in the conditional so that 
it'll actually compile, of course.