-&^lc => $(top_srcdir)/sub/dir/lc
-&^/ => $(top_srcdir)/sub/dir/
-&^. => $(top_srcdir)/sub/dir
+&^lc => ${top_srcdir}/sub/dir/lc
+&^/ => ${top_srcdir}/sub/dir/
+&^. => ${top_srcdir}/sub/dir
A few contexts do not support $-doubling, such as directive arguments
or places where this might imply $-quadrupling. (There is no way to
A few contexts do not support $-doubling, such as directive arguments
or places where this might imply $-quadrupling. (There is no way to