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Re: echo-area-clear-hook definition?

From: Richard Stallman
Subject: Re: echo-area-clear-hook definition?
Date: Mon, 29 Oct 2001 16:53:24 -0700 (MST)

    the variable echo-area-clear-hook is not defined as other Lisp variables in
    keyboard.c (DEFVAR_LISP is #if 0'ed to provide doc-string, but the symbol
    itself is not defined by DEFVAR_LISP):

    #if 0
      DEFVAR_LISP ("echo-area-clear-hook", ...,
                   doc: /* Normal hook run when clearing the echo area.  */);
      Qecho_area_clear_hook = intern ("echo-area-clear-hook");
      SET_SYMBOL_VALUE (Qecho_area_clear_hook, Qnil);

The reason is that there is no C variable Vecho_area_clear_hook.
DEFVAR_LISP would require one, but we have no need for one.

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