*.txt *.html \
        howto/*.txt howto/*.html \
        technical/*.txt technical/*.html \
-       RelNotes-*.txt *.css
+       RelNotes/*.txt *.css
 do
        if test ! -f "$h"
        then
                : did not match
        elif test -f "$T/$h" &&
-          $DIFF -u -I'Last updated [0-9][0-9]-[A-Z][a-z][a-z]-' "$T/$h" "$h"
+               $DIFF -u -I'^Last updated ' "$T/$h" "$h"
        then
                :; # up to date
        else
 do
        h=`expr "$th" : "$strip_leading"'\(.*\)'`
        case "$h" in
-       index.html) continue ;;
+       RelNotes-*.txt | index.html) continue ;;
        esac
        test -f "$h" && continue
        echo >&2 "# rm -f $th"