[lordmauve]

Mu uses the QScintilla editor from https://pypi.org/project/QScintilla/, which is GPLv3.

[ntoll]

And it should be mentioned that @lordmauve was a collaborator in Mu's development, without whom it wouldn't exist. (Cheers Dan... hope you're enjoying the t-shirt...) ;-)

[carlosperate]

I think he was actually wearing it yesterday when he wrote that message!