=== modified file 'configure.ac'
--- configure.ac	2014-09-15 00:20:21 +0000
+++ configure.ac	2014-09-23 20:42:43 +0000
@@ -1103,10 +1103,11 @@
     MAKEINFO=makeinfo
   fi
   case `($MAKEINFO --version) 2>/dev/null` in
-    'makeinfo (GNU texinfo) '4.[[7-9]]* | \
-    'makeinfo (GNU texinfo) '4.[[1-9][0-9]]* | \
-    'makeinfo (GNU texinfo) '[[5-9]]* | \
-    'makeinfo (GNU texinfo) '[[1-9][0-9]]* ) ;;
+  # ???????? matches both makeinfo & texi2any
+    ????????' (GNU texinfo) '4.[7-9]* | \
+    ????????' (GNU texinfo) '4.[1-9][0-9]* | \
+    ????????' (GNU texinfo) '[5-9]* | \
+    ????????' (GNU texinfo) '[1-9][0-9]* ) ;;
     *) MAKEINFO=no;;
   esac
 fi