[Webkit-unassigned] [Bug 83993] Unsupported commands in execCommand/queryCommand* should throw except queryCommandSupported

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=83993





--- Comment #27 from Alexey Proskuryakov <ap at webkit.org>  2012-04-20 13:51:16 PST ---
Invalid as in "programming error" is not the same as "unsupported by this particular engine".

Also, there is not a whole lot of APIs that take a string from an extensible set as argument, and I think that setProperty is by far most relevant example.

By the way, see bug 7296 for some context - we experimented with raising exceptions from setProperty before, despite a number of legitimate design concern raised back then.

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