Setting to control width of pane showing errors?

[penntaylor]

Errors that pop up in inline panes often require horizontal scrolling, making them hard to make sense of. Is there an existing way to set the default width of these panes?

Example of error pane requiring scrolling:

[pfitzseb]

I suppose you could just overwrite the relevant css yourself. Inline results really need an overhaul though...

[pfitzseb]

In case you wanna try: In this branch, the results will automatically fill all remaining space in the editor.

[pfitzseb]

Alright, this is fixed on master. :)