Syntax checker doesn't capture parse error due to tilde (~) in paths

[kjellander-unity]

Description

It's rare, but can still happen, that you have paths with ~ in the path of the CODEOWNERS file. This makes GitHub's CODEOWNERS stop working silently. Unfortunately, this case is not caught by the Valid syntax checker.

Expected result

The checker should fail and point at the faulty line in CODEOWNERS.

Actual result

All checks are OK.

Steps to reproduce

Add a line like

/foo/bar/Documentation~/                            @mszostok 

then run

env REPOSITORY_PATH="." \
    GITHUB_ACCESS_TOKEN="$GH_TOKEN" \
    OWNER_CHECKER_REPOSITORY="mszostok/codeowners-validator" \
~/bin/codeowners-validator

Troubleshooting