As I see it, the parent is specifically worried about the terminal needing to monitor input and fork a process in response. Control character handling should b

As I see it, the parent is specifically worried about the terminal needing to monitor input and fork a process in response. Control character handling should be pretty robust (or worst-case, a NOP). Curses-based programs read/write specific control characters to move the cursor, etc (really any tty should support control characters). But they don’t fork a new process… (unless I’m very mistaken).