Surprising 'exit()' behavior at debug prompt

[Glenn Golden]

Running 2.1.57 on RH7.3, Intel.

Not sure if the following is a bug, or my misinterpretation of how
exit() and semicolon work when in the debug environment. 

Trivial script to get to debug prompt:

foo.m:

    fprintf(stderr, "starting\n");
    keyboard("Hey> ");
    fprintf(stderr, "continuing\n");


So,

    1>   foo
    starting
    Hey> 1
    ans = 1
    Hey> exit
    continuing

which is as expected, i.e. exit() returns to script flow.


But:

    2>   foo
    starting
    Hey> 1; exit
    bash$>

exits Octave, never (evidently) returning to script flow.
Same behavior in 2.1.50.

Needless to say, this can be painful, even if it is correct.
What's the story on this?

Thx,
Glenn



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