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From: Richard Stallman <rms@gnu.org>
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Subject: Re: ?\_ patch
Date: Mon, 10 Feb 2003 05:35:39 -0500
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	  case 's':
    +       if (stringp)
    + 	return ' ';
	    c = READCHAR;
    !       if (c != '-') {
    ! 	UNREAD (c);
    ! 	return ' ';
    !       }
	    c = READCHAR;
	    if (c == '\\')

This might be a good idea if we combine it with the feature that it is
an error to put a digit or a symbol character or # after a character
constant with no space in between.