5cc2632f___Sublime_Text_2_Documentation__Description
[Methods] score_selector(scope, selector) [Return Value] Int [Description] 
Matches the selector against the given scope, returning a score. A score of 0 means no match, above 0 means a match. Different selectors may be compared against the same scope: a higher score means the selector is a better match for the scope.
API Reference - Sublime Text 2 Documentation
Description