Fixes issue #101, with result that als[pro/dev]_history save/load is disabled by default, unless the prolog shell can calculate a value (using HOME, or “local” values).  Note that alsdev already implemented this approach.
Fixes issue #101, with result that als[pro/dev]_history save/load is disabled by default, unless the prolog shell can calculate a value (using HOME, or “local” values).  Note that alsdev already implemented this approach.

AppliedLogicSystems/ALSProlog,AppliedLogicSystems/ALSProlog,AppliedLogicSystems/ALSProlog,AppliedLogicSystems/ALSProlog,AppliedLogicSystems/ALSProlog,AppliedLogicSystems/ALSProlog,AppliedLogicSystems/ALSProlog,AppliedLogicSystems/ALSProlog,AppliedLogicSystems/ALSProlog