They use a prefix by default and so filtering out e.g. autoconf_inc.m4 didn't work any more, we need to filter out a/autoconf_inc.m4 instead.
Changes to autoconf_inc.m4 are not interesting neither, exclude them. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@68854 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Exclude changes to the auto-generated files using filterdiff. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@68796 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775