I’ve recently spent some time working with terminal emulators in raw mode on macOS. While I chose to handle key events using escape codes, and found it seriously difficult (even gave up) to process the shift modifier key. However, I came across xquartz [1], which seems to do similar things as mentioned in the article. Would detecting shift key state have been trivial using such a library?

[1] https://github.com/XQuartz/XQuartz