comint-preinput-scroll-to-bottom is a compiled Lisp function in `
Go to the end of buffer in all windows showing it.
Movement occurs if point in the selected window is not after the process mark,
and `this-command' is an insertion command. Insertion commands recognized
are `self-insert-command', `comint-magic-space', `yank', and `hilit-yank'.
Depends on the value of `comint-scroll-to-bottom-on-input'.
This function should be a pre-command hook.