Forum OpenACS Q&A: Re: list-builder and -bulk_actions url value
Sorry, that's not supported.
Look at /acs-templating/resources/lists/table.adp.
So a good fix in list-builder would be non-trivial.
Possible work-around: Create a client-delete.tcl page, which simply redirects to client?op=delete... Repeat for other operations.
It's not terribly pretty, but a) it gets the job done, and b) it provides for clean upgradeability.