diff --git a/pform_dump.cc b/pform_dump.cc
index 486df19ae..5b70b99d0 100644
--- a/pform_dump.cc
+++ b/pform_dump.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998-2017 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1998-2019 Stephen Williams (steve@icarus.com)
  *
  *    This source code is free software; you can redistribute it
  *    and/or modify it in source code form under the terms of the GNU
@@ -204,7 +204,10 @@ void vector_type_t::pform_dump(ostream&fd, unsigned indent) const
       if (pdims.get()) {
 	    for (list<pform_range_t>::iterator cur = pdims->begin()
 		       ; cur != pdims->end() ; ++cur) {
-		  fd << "[" << *(cur->first) << ":" << *(cur->second) << "]";
+		  fd << "[";
+		  if (cur->first)  fd << *(cur->first);
+		  if (cur->second) fd << ":" << *(cur->second);
+		  fd << "]";
 	    }
       }
       fd << endl;
@@ -548,8 +551,12 @@ void PWire::dump(ostream&out, unsigned ind) const
 	    } else {
 		  out << " port";
 		  for (list<pform_range_t>::const_iterator cur = port_.begin()
-			     ; cur != port_.end() ; ++cur)
-			out << "[" << *cur->first << ":" << *cur->second << "]";
+			     ; cur != port_.end() ; ++cur) {
+			out << "[";
+			if (cur->first)  out << *cur->first;
+			if (cur->second) out << ":" << *cur->second;
+			out << "]";
+		  }
 	    }
       }
       if (net_set_) {
@@ -558,8 +565,12 @@ void PWire::dump(ostream&out, unsigned ind) const
 	    } else {
 		  out << " net";
 		  for (list<pform_range_t>::const_iterator cur = net_.begin()
-			     ; cur != net_.end() ; ++cur)
-			out << "[" << *cur->first << ":" << *cur->second << "]";
+			     ; cur != net_.end() ; ++cur) {
+			out << "[";
+			if (cur->first)  out << *cur->first;
+			if (cur->second) out << ":" << *cur->second;
+			out << "]";
+		  }
 	    }
       }
 
@@ -710,10 +721,11 @@ void PGModule::dump(ostream&out, unsigned ind) const
       if (parms_) {
 	    assert(overrides_ == 0);
 	    out << "#(";
-	    out << "." << parms_[0].name << "(" << *parms_[0].parm << ")";
-	    for (unsigned idx = 1 ;  idx < nparms_ ;  idx += 1) {
-		  out << ", ." << parms_[idx].name << "(" <<
-			*parms_[idx].parm << ")";
+	    for (unsigned idx = 0 ;  idx < nparms_ ;  idx += 1) {
+                  if (idx > 0) out << ", ";
+		  out << "." << parms_[idx].name << "(";
+                  if (parms_[idx].parm) out << *parms_[idx].parm;
+                  out << ")";
 	    }
 	    out << ") ";
       }
@@ -1738,6 +1750,7 @@ void PPackage::pform_dump(std::ostream&out) const
       out << "package " << pscope_name() << endl;
       dump_localparams_(out, 4);
       dump_parameters_(out, 4);
+      dump_typedefs_(out, 4);
       dump_enumerations_(out, 4);
       dump_wires_(out, 4);
       dump_tasks_(out, 4);