Documentation issues

[Bruce Korb]

Autoconf
********

This manual (24 April 2012) is for GNU Autoconf (version 2.69), a
package for creating scripts to configure source code packages using
templates and an M4 macro package.

   Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
[...]
15.2 Working With External Software
===================================
[...]
          AC_ARG_WITH([readline],
            [AS_HELP_STRING([--with-readline],  <<<=== invalid macro
              [support fancy command line editing @<:@default=check@:>@])],
            [],
            [with_readline=check])

          LIBREADLINE=
          AS_IF([test "x$with_readline" != xno],
            [AC_CHECK_LIB([readline], [main],
              [AC_SUBST([LIBREADLINE], ["-lreadline -lncurses"])
               AC_DEFINE([HAVE_LIBREADLINE], [1],
                         [Define if you have libreadline])
              ],
              [if test "x$with_readline" != xcheck; then
                 AC_MSG_FAILURE(
                   [--with-readline was given, but test for readline failed])
               fi
              ], -lncurses)]) <<<=== needs quoting


configure.ac:40: the top level
configure.ac:43: error: possibly undefined macro: AC_ART_WITH
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
configure.ac:44: error: possibly undefined macro: AS_HELP_STRING