[webcomponents] "Let SLOT be the most preceding slot in TREE whose slot name is NAME if it exists. Otherwise null." (#386)

I think you want "Let SLOT be the first slot element in TREE whose slot name is NAME if it exists, in tree order, and null otherwise."

To use "preceding" you need two nodes and a tree.

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Reply to this email directly or view it on GitHub:
https://github.com/w3c/webcomponents/issues/386