signal handling

Is ther[sic] a signal handling model in R? similar to
Perl's %SIG hash. I want to do fast clean up in my R
code before exit when a kill signal is issued.

You may find on.exit() somewhat useful for cleanup
but signals are not propogated to your code by the
R environment.

?Signals (on Unix-based platforms) mentions that SIGUSR2
will bypass the above; no idea about Windows.

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SIGSIG -- signature too long (core dumped)