Re: [address@hidden: Re: emacs 21.2 odd behavior in shell window]

[Richard Stallman]

    So I got out of emacs totally, restarted, tried the ^C^C again and it didn't
    work.

    So I brought comint.el into a buffer again, eval'ed just 
comint-interrupt-subjob
    without adding or changing anything else.  Now ^C^C worked just fine.

It sounds like the function works interpreted and fails compiled.
Can you verify that?

If so, the next step is to debug at C level.  Use GDB to put a
breakpoint at Finterrupt_process, and see if it gets called the same
way in both cases.  See what happens inside it in both cases.