Warning about non-ascii space characters

[vincent-legoll]

I got a strange warning that took me a while to diagnose:

jinja[spacing]: Jinja2 spacing could be improved: {{ item.dest }} -> {{ item.dest }} (warning)
roles/nova_compute/tasks/main.yml:40 Jinja2 template rewrite recommendation: `{{ item.dest }}`.

I first thought it to be an ansible-lint bug.

But when trying to create a minimal reproducer, I found it to be a no-break space character in the playbook.

OS / ENVIRONMENT

(venv-alint) $ ansible-lint --version
ansible-lint 24.6.1 using ansible-core:2.17.1 ansible-compat:24.6.1 ruamel-yaml:0.18.6 ruamel-yaml-clib:0.2.8

• ansible installation method: pip
• ansible-lint installation method: pip

freshly installed with pip in a new virtualenv under ubuntu 20.04

(venv-alint) $ python -V
Python 3.10.12
(venv-alint) $ pip list | grep ansible
ansible-compat            24.6.1
ansible-core              2.17.1
ansible-lint              24.6.1

So I think a specific warning that searches for all non-standard whitespace in ansible files would help a lot.
Maybe it could be disabled for parts that are harmless (names, non-templated strings, etc)
Templated strings may have some legitimate usage for such whitespace, though.

In addidtion, the jinja[spacing] warning should not appear if the only difference between source and proposed change is whitespace modifications, and the above warning has been shown.