> Apple used to publish the source code for TextEdit as part of their Xcode sample code, but they stopped a few years ago. The URL still works if you want it,

> Apple used to publish the source code for TextEdit as part of their Xcode sample code, but they stopped a few years ago. The URL still works if you want it, but, yeah, it's obviously not up-to-date: https://developer.apple.com/library/archive/samplecode/TextEdit/Introduction/Intro.html https://developer.apple.com/library/archive/samplecode/TextE... > (then Swift, probably). Not yet at least; there's no Swift symbols in the binary on Big Sur.