How Terminals Work

nitpick - EOF is not a signal, it just flushes the current line content without needing a newline in cooked mode and doing this on an empty line results in a 0 byte read(), which most apps interpret as EOF

and the terminal emulator is not itself sending the signals, its always just sending raw characters to the pty device - it is the kernel's pty layer sending a signal if the right flags are on and doing line buffering, local echo, etc. and signals go to the foreground process group (which is set by the shell making a tcsetpgrp syscall)

related - https://devblogs.microsoft.com/commandline/windows-command-l...

For the record: https://mastodonapp.uk/@JdeBP/115869933538346446

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