Re: comint-interrupt-subjob also kills pending input

[Richard Stallman]

    Another way, used currently to highlight prompts, is to consider any
    non-newline-terminated line at the end of the buffer a prompt, but to
    update it dynamically so that any wrong guess (e.g. caused by partial
    output) is quickly corrected.

Ok, I withdraw the suggestion to distinguish based on prompts.

Let's try making it an option whether to kill the input,
and then we can ask what users prefer.