parsing floating point values - user input for <input type="number"> in different locales

In  
<http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#rules-for-parsing-floating-point-number-values>  
(used for <input type="number"> for example), the steps don't seem to  
account for user input of a decimal in the field where "," is used instead  
of "." depending on the locale.

Is this covered anywhere or is it intended to only accept "." regardless  
of locale?

-- 
Michael