Bugzilla – Bug 813
add assertions checking for dropzone attribute
Last modified: 2011-01-20 23:30:20 CET
spec says that dropzone values must be and unordered set of unique space-separated tokens, so we need to adding checking that reports and error if there are any non-unique tokens in the value.
https://bitbucket.org/validator/syntax/changeset/0f839b3ea103