Has someone made a script already ?
Wei have you seen Touche?
For Robofont but perhaps the logic could be ported to a Glyphs script?
What exactly do you mean? Overlaps of paths with each other?
There’s a glyphs app version of Touche already actually! (I made a fork which outputs the results as tabs https://github.com/weiweihuanghuang/Touche )
@mekkablue I mean to check which glyphs have path overlaps in itself
You could make a copy of the paths, remove overlap and check if they changed (removing overlap mostly changes the start point so your comparison needs to take this into account).