For entities with null values we must check all traits to see if any one of them is the default one. It will then become the value. This is rare if traits are primarily used for HTML/XUL attributes. We could optimize this check by doing it in the parser.
https://hg.mozilla.org/projects/larch/rev/967113221c5854c237b1aa4e33e818a28123b44a Bug 1300729 - Optimize null values in the parser
Status: NEW → RESOLVED
Last Resolved: a year ago
Resolution: --- → FIXED
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