On 11/30/2012 3:13 PM, Khaled Hosny wrote:
On Fri, Nov 30, 2012 at 10:58:25AM +0100, Steve White wrote:
There was a suggestion that Latin kerns should be activated by
{script,lang}={dflt,dflt}.  Let me ask, should Devanagari kerns also be
activated by {dflt, dflt}?  If not, why?

My own policy is, unless a feature must be restricted to a specific
script/language (e.g. a locale-specific feature), all features should be
assigned to *all* scripts in the font, including DFLT/dflt, because
there is technical reason for doing otherwise and it would help
applications not doing automatic script/language itemisation (both
OpenType-enabled TeX engines, for example).

That makes much sense (unless a font has hundreds of different lookups for multiple features which could slow down basic processing).

Hans


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