Should an attribute add to tag?

[truncatei]

In WriteTag.java
// ......
    protected int abbreviate = 0;

    public int getAbbreviate() {
        return abbreviate;
    }

    public void setAbbreviate(int abbreviate) {
        this.abbreviate = abbreviate;
    }
// ......
public int doStartTag() throws JspException {
// ...
         if (abbreviate > 0) {
            output = StringUtils.abbreviate(output, abbreviate);
        }

        // Print this property value to our output writer, suitably filtered

        if (filter) {
//...
}

And the tag:
        <attribute>
            <name>abbreviate</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
        </attribute>

Then  we can use <bean:write name="somename" abbreviate="length"/> for short
text we want.