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Fix params2list() duplicate key behavior #2551

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Fix params2list() duplicate key behavior #2551

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4997cb3
Update `params2list()` duplicate key behavior
Apr 5, 2026
67d44c2
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ike709 Apr 6, 2026
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2 changes: 1 addition & 1 deletion Content.Tests/DMProject/Tests/Builtins/params2list.dm
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Original file line number Diff line number Diff line change
Expand Up @@ -3,4 +3,4 @@
ASSERT(json_encode(params2list("a;a;a")) == @#{"a":["","",""]}#)

ASSERT(params2list("a=1;b=2") ~= list(a="1", b="2"))
ASSERT(params2list("a=1;a=2") ~= list(a="2"))
ASSERT(params2list("a=1;a=2")["a"] ~= list("1","2"))
7 changes: 4 additions & 3 deletions OpenDreamRuntime/Procs/Native/DreamProcNativeRoot.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1886,9 +1886,10 @@ public static DreamList Params2List(DreamObjectTree objectTree, string queryStri
}
}
} else {
string queryValue = queryValues[^1]; //Use the last appearance of the key in the query

list.SetValue(new DreamValue(queryKey), new DreamValue(queryValue));
if (queryValues.Length > 1)
list.SetValue(new DreamValue(queryKey), new DreamValue(objectTree.CreateList(queryValues)));
else
list.SetValue(new DreamValue(queryKey), new DreamValue(queryValues[0]));
}
}

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