Hi Nate:
Thanks for your response. The zip command always creates files with the
extension. Utilities that validate, examine, or extract from zip files
expect the file to have a .zip extension.
I can understand why it was easier to architect Galaxy with a simple,
uniform file naming scheme.
I have an application that needs to return a zip file.
I attempted to follow the instructions to add a zip datatype, with no
success.
It appears to me that Galaxy insists on generating the output file name
and I can't get it to generate one with a .zip extension.
The documentation on the wiki