added a long time ago, since capacitors use a different method for
calculating width and length than either transistors or resistors,
so subcircuits need a special class designator or else the extraction
may calculate the wrong dimensions for device width by totalling the
perimeter between the device and terminal types, as it would for a
MOSFET.
8.2.74. Top-level port names are now flagged independently of
any subcircuit port, so they are easier to identify when determining
naming precedence for the net. This makes the code cleaner and
removes the problems arising from non-top-level ports and global
names overriding the subcircuit port names.
the patch was attempting to fix. For node naming, ports were given
precedence over globals. However, this failed to distinguish between
ports on the top level and ports down in the hierarchy. This has now
been fixed. Ports on the hierarchy top level have naming precedence
over everything else; otherwise, the traditional rules of node
naming precedence apply.
Tim Edwards