/[autoconf]/autoconf/doc/autoconf.texi
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revision 1.781 by akim, Mon Nov 24 14:36:16 2003 UTC revision 1.782 by bonzini, Tue Nov 25 13:50:46 2003 UTC
# Line 8846  with their modern implementation. Line 8846  with their modern implementation.
8846    
8847  Autoconf provides a simple means to obsolete a macro.  Autoconf provides a simple means to obsolete a macro.
8848    
8849  @defmac AU_DEFUN (@var{old-macro}, @var{implementation})  @defmac AU_DEFUN (@var{old-macro}, @var{implementation}, @ovar{message})
8850  @acindex{DEFUN}  @acindex{DEFUN}
8851  @acindex{AU_DEFUN}  @acindex{AU_DEFUN}
8852  Define @var{old-macro} as @var{implementation}.  The only difference  Define @var{old-macro} as @var{implementation}.  The only difference
8853  with @code{AC_DEFUN} is that the user will be warned that  with @code{AC_DEFUN} is that the user will be warned that
8854  @var{old-macro} is now obsolete; if she then uses @command{autoupdate},  @var{old-macro} is now obsolete.
 the call to @var{old-macro} will be replaced by the modern  
 @var{implementation}.  
8855    
8856  Note that you can provide another definition with @code{AC_DEFUN} in  If she then uses @command{autoupdate}, the call to @var{old-macro} will be
8857  order to update the way a macro is used without making it completely  replaced by the modern @var{implementation}.  In the future,
8858  obsolete.  @command{autoupdate} will then print the additional @var{message}.
8859  @end defmac  @end defmac
8860    
8861  @node Coding Style  @node Coding Style

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