Hi,
in his blog entry [1], Dylan asked for feedback on the new loop feature.
As much as I understand that having a syntax with changing keywords isn't
optimal, I dislike the new lookup-based syntax for two reasons:
1. we've had so many issues with quoting within quoting of lookup that I
don't look forward having even more lookups in my code.
2. having code within a string makes it less readable, you lose the
clean structure and code validation of YAML and the syntax highlighting in
your editor, which leads to potentially more errors.
As said, I understand that having a with_* structure in code isn't nice,
hence I would suggest an alternative consisting of two main points:
1. make it a clean loop structure with options
2. merge the loop_control structure with the loop structure
This means that the following could be written instead of a with_items:
- debug:
msg: one line of {{ myitem }}
loop:
with: items # instead of with_items, easier to parse hopefully
through: # you could still use a string with fancy lookup here
- item1
- item2
as: myitem # loop_var is a bit clumsy IMHO but also fine
pause: ...etc...
or using all the (assumed) defaults:
- debug:
msg: one line of {{ item }} # default var is still 'item'
loop:
through: # assuming 'items' is the default 'with'
- item1
- item2
This is just a suggestion as basis for discussion, and I can definitely
live with an alternative syntax, but it should avoid having too much placed
in strings and strings within strings, which is implied IMHO by the plain
lookup-syntax.
KR, Eric
[1] https://www.ansible.com/blog/loop-plays-past-present-future
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