YAML coverage - TROLL_BLOCKS arbitrary message

tests/lockchain.chk

@@ -1650,6 +1650,18 @@ that of a rhinoceros.  The troll fends off your blows effortlessly.
 
 Gluttony is not one of the troll's vices.  Avarice, however, is.
 
+> ne
+
+The troll refuses to let you cross.
+
+You're on sw side of chasm.
+
+A rickety wooden bridge extends across the chasm, vanishing into the
+mist.  A notice posted on the bridge reads, "Stop! Pay troll!"
+
+A burly troll stands by the bridge and insists you throw him a
+treasure before you may cross.
+
 > toss eggs
 
 The troll catches your treasure and scurries away out of sight.

tests/lockchain.log

@@ -290,6 +290,7 @@ sw
 u
 attack
 feed troll
+ne
 toss eggs
 ne
 ne