Index: autoupdate.in
===================================================================
RCS file: /cvs/autoconf/autoupdate.in,v
retrieving revision 1.8
diff -r1.8 autoupdate.in
319c319
<       unless $ac_macros{$_} eq "m4sugar.m4";
---
>       unless $ac_macros{$_} =~ /m4sugar.m4$/;