style

[Patrick Welche]

In the Fine Manual:

@node Coding Style
@section Coding Style

In order to highlight the recommended coding style, here is a macro
written the old way:

@example
dnl Check for EMX on OS/2.
dnl _AC_EMXOS2
AC_DEFUN(_AC_EMXOS2,
...
and the new way:

@example
# _AC_EMXOS2
# ----------
# Check for EMX on OS/2.
m4_define([_AC_EMXOS2],

Why the change AC_DEFUN -> m4_define ?
"Macro Definitions" says:

Autoconf macros are defined using the `AC_DEFUN' macro, which is
similar to the M4 builtin `m4_define' macro.  In addition to defining a
macro, `AC_DEFUN' adds to it some code that is used to constrain the
order in which macros are called (*note Prerequisite Macros::).

   An Autoconf macro definition looks like this:

     AC_DEFUN(MACRO-NAME, MACRO-BODY)

and again the example shows:

     m4_define([AC_MSG_ERROR],

rather than AC_DEFUN. So, what is considered good style?

Cheers,

Patrick