Wikimedia Bugzilla is closed!

Click in the URL above or follow the following steps:
1. Go to [[pt:Special:Sandbox]]
2. Select the action "abusefiltercheckmatch" in the drop-down menu
3. Type in the filter field: length(user_name)>0
4. Type in the vars field: {"user_name":"Foo"}

After this, click in "Make the request".

== Expected result ==
{
    "abusefiltercheckmatch": {
        "result": true
    }
}

== Actual result ==
{
    "abusefiltercheckmatch": {
        "result": false
    }
}

A similar test with e.g. the filter "user_name===null" and the same JSON in the vars field gives
{
    "abusefiltercheckmatch": {
        "result": true
    }
}

So, it seems AbuseFilter is not setting the variables properly.


Notes:
1. If you don't have the appropriate user rights you'll see something like
{
    "servedby": "mw1141",
    "error": {
        "code": "unknownerror",
        "info": "Unknown error: \"permissiondenied\""
    }
}
2. In case I'm using the wrong syntax to test this, maybe this bug could be reused to request an improved documentation for this API?