Support periods in data attribute selectors

[ryanve]

Sizzle supports data attribute selectors when they include dashes and underscores, but not when they include periods. This would be useful. Periods are valid in the naming rules.

data-example1.0="This is a valid in HTML5 "
data-example1-0="This is a valid in HTML5 "

$( '[data-example1-0]' ) // Targetable in jQuery.
$( '[data-example1.0]' ) // Throws "unrecognized expression" Sizzle error in jQuery.

[timmywil]

Periods just need to be escaped. This is also the behavior of querySelectorAll. http://jsfiddle.net/timmywil/x8rsr/

[ryanve]

Sweet!