Crash with formal expression names

[a-maier]

Hi Ben,

if I use expression names in square brackets (e.g. [expression]) I get a crash with the following error

ReduceEdge Line 47 --> Illegal LHS for expression definition
++++Errors in Loop
ReduceEdge Line 107 --> Illegal LHS for expression definition
ReduceEdge Line 107 --> Illegal position for d3
ReduceEdge Line 107 --> Undeclared variable d3
ReduceEdge Line 115 ==> Proper syntax: #exchange expr1,expr2 or #exchange $var1
,$var2

I guess a simple fix would be to wrap the names of the temporary expressions themselves in square brackets, for instance [NAMEtmp] instead of NAMEtmp.