[XeTeX] XeTeX, "Options for all fonts", and the decimal comma

[Philip TAYLOR]

Jonathan Kew wrote:
> On 25/9/12 09:30, Philip TAYLOR wrote:
>> Does XeTeX not consistently support the use of the decimal comma ?
>
> No. Within the extended \font microsyntax, comma separates multiple
> settings for a feature (something that's only applicable to AAT
> features, IIRC). It will not be interpreted as a decimal separator.
>
> (Actually, when parsing non-AAT features, it may be treated the same as
> semicolon - I don't recall for sure.)
>
> JK

Thank you, Jonathan.  I should have realised that allowing comma
as a separator would prevent its use as a decimal separator.  Ah
well, there goes my resolve to be a Good European [tm].

** Phil.