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Re: C-g does not interrupt lisp code (emacs 21)

From: Richard Stallman
Subject: Re: C-g does not interrupt lisp code (emacs 21)
Date: Sun, 28 Oct 2001 07:05:59 -0700 (MST)

    It seems that syssignal.h contains

      #ifdef USG

      #define sigunblock(sig) 


    which doesn't make the slightest sense to me.  It's that way for quite
    some time it seems, at least since 1996.

I think that the the old USG systems did not have a way to do
sigunblock.  This code is all conditional on !defined (POSIX_SIGNALS)
due to an #else clause, so it is not used on most systems.
(Most systems define POSIX_SIGNALS nowadays.)

Does HPUX 11 support the Posix signals feature?
What happens if you add  #define POSIX_SIGNALS to config.h
and recompile?

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