[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 #12 from Ehsan Akhgari [:ehsan] <ehsan at mozilla.com>  2012-04-16 14:26:45 PST ---
My argument _is_ specific to execCommand, since it is an API which can potentially make complicated modifications to the DOM, and has no way of communicating the status of what happened back to the caller (short of throwing an exception, that is.)

I understand the web compat risk here, but I do not think this is likely to affect many real web pages (unless nobody has ever tested them with IE, which would be rather surprising.)  We're going to do this change in Gecko, and I guess I'll wait for Ryosuke to weigh in to see what will happen on the WebKit side, though I would really prefer if WebKit would make the same change.

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