I wasn't quite aware of this because there are slight inconsistencies in some programs and between OSs. e.g. in powershell on Windows, Ctrl+Backspace deletes t

I wasn't quite aware of this because there are slight inconsistencies in some programs and between OSs. e.g. in powershell on Windows, Ctrl+Backspace deletes the word part, but in cmd shell, Ctrl+Backspace deletes until whitespace. The keybindings to delete word also vary on Windows vs MacOS (Alt+Backspace deletes a word on mac, but deletes the whole line on Windows. Windows uses Ctrl+Backspace for that). I was also confused since by-default Emacs doesn't treat `_` as a word character.