Sometimes I like to see how various Darktable styles look on a particular image. As far as I've been able to discover, the only way to "undo" a style after it's been applied - apart from manually resetting all the modules used in style - is to pop back out to the lighttable and discard the history stack.
Is there a way to set a keyboard shortcut to quickly accomplish 'History Stack - Discard' within the darkroom?