Looking at the definitions of template::adp_abort and template::adp_parse, in particular the error handling block of the latter, the intent seems to be that calling adp_abort will cause the current template being processed to return nothing without raising an error, while letting actual errors propagate up. However, the implementation of template::adp_abort doesn't return an appropriate error code to get into the correct branch of the switch.
On my own installation I changed template:adp_abort to call "return -code 10 ADP_ABORT" rather than "error ADP_ABORT" as it currently does, which makes it behave as it seems it should.
