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Document listing/1 #2929

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Document listing/1
rotu Apr 30, 2025
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PR feedback
rotu Apr 30, 2025
6ff45fa
Update format.pl
rotu May 12, 2025
3ed08bd
Update to reflect changes from #2964
rotu Jul 9, 2025
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9 changes: 9 additions & 0 deletions src/lib/format.pl
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Expand Up @@ -699,6 +699,15 @@

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%% listing(+PI)
%
% Given a predicate indicator PI=Identifier/Arity, `listing(PI)` succeeds
% if there is a dynamic, user-defined procedure with the given identifier
% and arity and at least one clause. All clauses are written to output.
% Fails if there are no clauses or if the procedure is not defined.
% If PI specifies a procedure that is builtin or its implementation is
% otherwise not public, an error is thrown.

listing(PI) :-
nonvar(PI),
( PI = Name/Arity0 ->
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