Correction to my previous post - the renderer-extension should have
<tag-name> the same as it is shown in the TLD:
<renderer>
<component-family>javax.faces.Input</component-family>
<renderer-type>org.apache.myfaces.Date</renderer-type>
<renderer-class>org.apache.myfaces.custom.date.HtmlDateRenderer</rendere
r-class>
<renderer-extension>
<instance-name>inputDate</instance-name>
<tag-name>inputDate</tag-name>
<taglib-prefix>x</taglib-prefix>
<taglib-uri>http://myfaces.apache.org/extensions</taglib-uri>
</renderer-extension>
</renderer>
-D
