2005-01-03  Stepan Kasal  <address@hidden>

	* lib/m4sugar/m4sh.m4 (AS_REQUIRE): Add a comment about nesting.

Index: lib/m4sugar/m4sh.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/m4sugar/m4sh.m4,v
retrieving revision 1.130
diff -u -r1.130 m4sh.m4
--- lib/m4sugar/m4sh.m4	1 Jan 2005 07:54:03 -0000	1.130
+++ lib/m4sugar/m4sh.m4	3 Jan 2005 17:28:25 -0000
@@ -131,6 +131,11 @@
 #      bar1=`echo $bar`
 #      bar2=`echo $bar`
 #
+# Due to the simple implementation, all the AS_REQUIRE calls have to be at
+# the very begining of the bacro body, or the AS_REQUIRE's may not be nested.
+# More exactly, if a macro doesn't have all AS_REQUIRE's at its beginning,
+# it may not be AS_REQUIRE'd.
+#
 m4_define([AS_REQUIRE],
 [m4_provide_if([$1], [],
 	       [m4_divert_text([M4SH-INIT], [m4_default([$2], [$1])])])])