Use selfSorted instead of sortable.
I tried that...the sort icons do not appear and sorting is not an option...regardless of whether the EL expression equates to "true" or "false" (boolean).
Why would this be?
I also joined selfSorted with "sortable" in a number of combinations; seems so long as I have an expression for selfSorted, the column will not be sortable.
Is this a bug?
I take that back...I had made a mistake on my part. Sorry for the short fuse.
Works as expected - thanks for the suggestion.