[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 #7 from Alexey Proskuryakov <ap at webkit.org>  2012-04-16 12:50:46 PST ---
This is a generic argument for raising exceptions for every error in every DOM function, and we are obviously not going there. Early error detection is a benefit that comes with draconian error handling, but the Web platform does not work like that. Browser users prefer subtle errors to completely dysfunctional pages.

What I'm saying is that execCommand is in less need of exceptions than an average DOM function.

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