[HarfBuzz] Handling OpenType layout across itemisation boundaries

[Behdad Esfahbod]

On 15-11-09 01:11 PM, Jonathan Kew wrote:
> 
> While this might be nice in principle, I suspect it would be of limited value
> in most real-world use cases, because it's very common that script- and
> language-run boundaries also turn out to be font boundaries. (This is much
> less likely to be the case for language changes within a single script, of
> course; but it's also relatively uncommon for content to actually be marked-up
> for language at this level.)

Except for Japanese, which uses three scripts!