Not detecting malformed blocks

[nvtkaszpir]

example main.yaml:

- when: ansible_distribution_release == 'xenial'
  block:

output - no error.
ansible shows somethig way different:

ERROR! A malformed block was encountered.

The error appears to have been in 'roles/something/tasks/main.yml': line ...., column 3, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:


- when: ansible_distribution_release == 'xenial'
  ^ here

Expected behavior: detect and report malformed blocks.

[willthames]

I'd probably need to use a bit more of ansible's block processing logic, which could cause other problems.

Does this pass ansible --syntax-check? (I have no plans to solve problems detected by ansible's syntax checker which can be run as a precursor to ansible-review)