Is GNU Prolog interpreter output missing quotes for '<>', '[]', and '{}'?

In gprolog 1.3.1 and gprolog 1.4.0 the following occurs.
 
A = '[]'.[ENTER KEY PRESSED]
A = []
 
The same is true for '{}' and '<>'.  However, '()' works as I expected.
 
If a term includes the atom '[]', the term displays an empty list instead of an atom.
 
A = f(abc,1.25,'[]').[ENTER KEY PRESSED]
A = f(abc,1.25,[])
 
So the term now contains an empty list.
 
This seems so very minor but when I copy GNU Prolog output
from the interpreter display and paste it back into the interpreter
for another query, the term is incorrect and the query fails.
 
I encountered this when writing code which outputs some Prolog source code
as in a small code generator for a repetitive task.
 
Is this a bug???
 
Dave

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