diogo/yap-6.3
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fix error messages (patch by Ulrich Neumerkel).

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This commit is contained in:
Vítor Santos Costa 2012-10-03 21:52:18 +01:00
parent ab14365a30
commit 1089aaf585
1 changed files with 3 additions and 4 deletions
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7
pl/sort.yap
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@ -26,10 +26,9 @@
length(L, M) :- length(L, M) :-
'$skip_list'(L, M, M0, R), '$skip_list'(L, M, M0, R),
( R == [] -> true ; ( var(R) -> '$$_length'(R, M, M0) ;
var(R) -> '$$_length'(R, M, M0) ; R == []
L \= [_|_], '$do_error'(type_error(list,L),length(L,M)) ).
).
% %
% in case A1 is unbound or a difference list, things get tricky % in case A1 is unbound or a difference list, things get tricky