JsonPointer parsing FieldName rule inconsistent

[slz30]

JsonPointer is compatible with non escaped characters~, but this compatibility fails when~is located at the end of FieldName and followed by /. Here is a simple example

public static void main(String[] args) {
        ObjectMapper om = new ObjectMapper();
        ObjectNode jo = om.createObjectNode();
        ArrayNode nums = om.createArrayNode().add(0).add(1);
        jo.set("num~s",nums);
        JsonPointer jp = JsonPointer.compile("/num~s/0");
        System.out.println(jo.at(jp)); //print 0

        jo.remove("num~s");
        jo.set("nums~",nums);
        jp = JsonPointer.compile("/nums~");
        System.out.println(jo.at(jp)); //print [0,1]

        jo.remove("num~s");
        jo.set("nums~",nums);
        jp = JsonPointer.compile("/nums~/0");
        System.out.println(jo.at(jp).isMissingNode()); // is missingNode
    }