Netlist compare: more detailed derivation of net assignments from known nets (pairing by deduction)

testdata/ruby/dbNetlistCompare.rb

@@ -460,8 +460,8 @@ END
     assert_equal(logger.text, <<"END")
 begin_circuit BUF BUF
 match_nets OUT OUT
+match_nets INT $10
 match_nets IN IN
-match_ambiguous_nets INT $10
 match_nets INT2 $11
 match_pins $0 $1
 match_pins $1 $3
@@ -887,8 +887,8 @@ match_nets OUT OUT
 match_nets IN2 IN2
 match_nets VSS VSS
 match_nets VDD VDD
-match_nets IN1 IN1
 match_nets INT INT
+match_nets IN1 IN1
 match_pins $0 $0
 match_pins $1 $1
 match_pins $2 $2