If the option obfuscate(true) is used with qsave_program/2,
certain atoms in the saved state are renamed. The renaming is performed
by library library(obfuscate). The current implementation
is rather conservative, renaming atoms that are used only to define the
functor that names a predicate. This is a safe operation, provided the
application does not create new references to renamed predicates by
reading additional source code or constructing the atom that names the
predicate dynamically in some other way such as using atom_concat/3.
Predicates that are called this way must be declared using public/1.
Note that more aggressive renaming is possible, but this requires more detailed analysis of the various roles played by some atom. Helpful and descriptive predicate names tend to be unique and are thus subject to this transformation. More general names tend to collide with other roles of the same atom and thus prevent renaming.