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Merge pull request #1127 from triska/retract_correction

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Correct retract/1 issues due to module qualification
This commit is contained in:
Mark Thom
2021-12-04 16:23:00 -07:00
committed by GitHub
parent 2c555c969e 48cea6efdf
commit 88e9dc2177
1 changed files with 9 additions and 9 deletions
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18
src/lib/builtins.pl
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@@ -954,7 +954,7 @@ retract_module_clause(Head, Body, Module) :-
).
first_match_index([Clause | Clauses], Clause, N, N) :-
first_match_index([Clause | _], Clause, N, N) :-
!.
first_match_index([_ | Clauses], Clause, N0, N) :-
N1 is N0 + 1,
@@ -998,14 +998,14 @@ retract_clause(Head, Body) :-
:- meta_predicate retract(0).
retract(Clause) :-
( Clause \= (_ :- _) ->
Head = Clause,
Body = true,
retract_clause(Head, Body)
; Clause = (Head :- Body) ->
retract_clause(Head, Body)
).
retract(Clause0) :-
strip_module(Clause0, Module, Clause),
( Clause = (Head :- Body) ->
true
; Head = Clause,
Body = true
),
retract_clause(Module:Head, Body).
:- meta_predicate retractall(0).