I don't use Oracle Workshop, but since it's Eclipse based I think an Eclipse targeted answer is also fine: go to Window > Preferences > General > Content Types > Text > JSP and then add *.xhtml
as file association (and of course set default encoding to UTF-8
). This will get you autocompletion for the JSF taglibs.
Autocompletion of Facelets taglib is however another story. It by default doesn't use TLD files to define the tags. The current Eclipse Helios 3.6 version supports it, but in older Eclipse versions you'll have to bring in a TLD or do some hacky stuff. Also see this answer.