2005-05-24  Stepan Kasal  <address@hidden>

	* lib/m4sugar/m4sh.m4 (AS_ESCAPE): Make the pattern a bit simpler;
	  use \& insetad of \1.

Index: lib/m4sugar/m4sh.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/m4sugar/m4sh.m4,v
retrieving revision 1.140
diff -u -r1.140 m4sh.m4
--- lib/m4sugar/m4sh.m4	20 May 2005 12:08:19 -0000	1.140
+++ lib/m4sugar/m4sh.m4	24 May 2005 05:52:28 -0000
@@ -502,8 +502,8 @@
 # Escape the CHARS in STRING.
 m4_define([AS_ESCAPE],
 [m4_bpatsubst([$1],
-	     m4_ifval([$2], [[\([$2]\)]], [[\([\"$`]\)]]),
-	     [\\\1])])
+	     m4_dquote(m4_default([$2], [\"$`])),
+	     [\\\&])])
 
 
 # _AS_QUOTE_IFELSE(STRING, IF-MODERN-QUOTATION, IF-OLD-QUOTATION)