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use strip module in retract/1, a meta-predicate

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This commit is contained in:
Mark Thom
2022-01-06 21:44:41 -07:00
parent 10bb6ab3bb
commit b551ef315f
1 changed files with 8 additions and 7 deletions
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src/lib/builtins.pl
+8 -7
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@@ -964,13 +964,14 @@ retract_clause(Head, Body) :-
:- meta_predicate retract(0). :- meta_predicate retract(0).
retract(Clause0) :- retract(Clause0) :-
strip_module(Clause0, Module, Clause), loader:strip_module(Clause0, Module, Clause),
( Clause = (Head :- Body) -> ( Clause \= (_ :- _) ->
true Head = Clause,
; Head = Clause, Body = true,
Body = true retract_module_clause(Head, Body, Module)
), ; Clause = (Head :- Body) ->
retract_clause(Module:Head, Body). retract_module_clause(Head, Body, Module)
).
:- meta_predicate retractall(0). :- meta_predicate retractall(0).