Automattic/jetpack — pull request #1078 by scotchfield (2014-09-03 20:10:44+00:00)
Title: Check for array input in AtD_change_mce_settings, and unit tests.

Should the function fix an invalid input variable as proposed here? The rest of the mce code is expecting an array, so we could at least do this. Another fix for this is to just return the unexpected input, like a string, unchanged.
https://github.com/Automattic/jetpack/issues/1056