simplify os:argv/1 fix

diff --git a/src/lib/os.pl b/src/lib/os.pl
index cf30339438c06f26523476dc37a505ffb03ba477..c9db15f450d663ddd26c0bb0466964507138475e 100644 (file)
--- a/src/lib/os.pl
+++ b/src/lib/os.pl
@@ -137,9 +137,8 @@ raw_argv(Argv) :-
 argv(Argv) :-
     can_be(list, Argv),
     '$argv'(Argv0),
-    ( member("--", Argv0) ->
-        once(append(Argv1, ["--"|Argv], Argv0)),
-        \+ member("--", Argv1)
+    ( append(_, ["--"|Argv1], Argv0) ->
+        Argv = Argv1
     ;
         Argv = []
     ).