With MDL-69863 landed, the "illegal whitespace check" job has detected new cases and started to fail.

 current count: 957

previous count: 889

    best count: 889

That's caused by existing "illegal" (tabs, spaces at end...) whitespace in the following files:

LICENSE_QUAIL.txt

classes/local/htmlchecker/common/resources/placeholder.txt

tests/local/htmlchecker/common/checks/img_alt_is_different_test.php

tests/local/htmlchecker/common/checks/img_alt_not_empty_in_anchor_test.php

tests/local/htmlchecker/common/checks/img_has_alt_test.php

tests/local/htmlchecker/common/checks/img_alt_is_too_long_test.php

As immediate measure, we have added those files as allowed exceptions to the check, so it's back to green.

https://github.com/moodlehq/moodle-local_ci/commit/523788411e13702617e6e83528a6e33622f06ad0

No matter of that it would be great to review the cases in the files above and, if possible, fix them. They seem to be mostly .txt and test files and, maybe they are not a requirement and, for example, tabs can be changed to 4 spaces without hurting anything.

Also, when any of those files are cleaned, it would be great to ping to any integrator, so the exceptions can be removed as much as possible.

For your consideration.