[Rd] Encourage exit with nonzero error status in ?last.dump

[Martin Maechler]

>>>>> Scott Kostyshak <skostysh at princeton.edu>
>>>>>     on Fri, 13 Jun 2014 02:04:36 -0400 writes:

    > The following example in ?dump.frames options(error =
    > quote({dump.frames(to.file = TRUE); q()}))

    > is useful for teaching the user how to save a frame dump
    > when R encounters an error during non-interactive
    > sessions. This command however causes an additional change
    > that on encountering an error R exits with a 0 error
    > status. Although it's just an example, it's an important
    > one as it's referenced in the 'Details' section of the
    > help file. I think it would be better to encourage exiting
    > with a nonzero error status:

    > options(error = quote({dump.frames(to.file = TRUE); q(status = 1)}))

You are right.  
Thank you for the suggestion: it will be in next
release.

Martin Maechler,
ETH Zurich