[mm-common] Add implicit pre-initialization to mm-module

[Daniel Elstner <daniel src gnome org>]

commit 18f602f49ddc14f3e4452dedd62b69c5d958881d
Author: Daniel Elstner <daniel kitta gmail com>
Date:   Sun Aug 9 16:13:15 2009 +0200

    Add implicit pre-initialization to mm-module
    
    * macros/mm-module.m4 (_MM_PRE_INIT): New private pre-initialization
    macro.  For now, it does not do much except for installing a forbidden
    token pattern in order to catch unexpanded MM_ macros.
    (MM_INIT_MODULE): Invoke _MM_PRE_INIT through AC_REQUIRE().

 macros/mm-module.m4 |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/macros/mm-module.m4 b/macros/mm-module.m4
index bbbf531..014cad5 100644
--- a/macros/mm-module.m4
+++ b/macros/mm-module.m4
@@ -15,7 +15,15 @@
 ## You should have received a copy of the GNU General Public License
 ## along with mm-common.  If not, see <http://www.gnu.org/licenses/>.
 
-#serial 20090806
+#serial 20090809
+
+## _MM_PRE_INIT
+##
+## Private pre-initialization macro for use with AC_REQUIRE().  For now,
+## all it does is register a forbidden token pattern with autom4te, so
+## that unexpanded macro calls in the output can be caught.
+##
+AC_DEFUN([_MM_PRE_INIT], [m4_pattern_forbid([^_?MM_])])
 
 ## _MM_INIT_MODULE_VERSION(basename, BASENAME, [major], [minor], [micro])
 ##
@@ -62,6 +70,7 @@ m4_define([_MM_INIT_MODULE_BASENAME],
 AC_DEFUN([MM_INIT_MODULE],
 [dnl
 m4_assert([$# >= 2])[]dnl
+AC_REQUIRE([_MM_PRE_INIT])[]dnl
 _MM_INIT_MODULE_BASENAME([$1], [$2],
                          m4_quote(m4_bpatsubst([$1], [-[.0123456789]+$])),
                          m4_quote(m4_bregexp([$1], [-\([.0123456789]+\)$], [\1])))[]dnl