I ended up using the following hack:
- name: shell test
shell: "{{ item }}"
with_items:
- /bin/true
- /bin/false
- /bin/true
when: r_shell.rc|default(0)==0
register: r_shell
This exits on first failure. To exit on success you can use:
when: r_shell.rc|default(1)!=0
This is obviously a hack, and it is strange that register looks different
in the task and after the task ends, but it does the job.
It would have been great if the register had the final form and the item
results were appended as tasks were executed so we can check the results
there with filters.
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