Error when parsing sudoers configuration with domain groups / groups with "@domain"

[mpibpc-mroose]

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Describe the bug sudo-rs seems to be unable to work with active directory domain groups in sudoers files. Seems it stumbles upon the @ when parsing those files.

To Reproduce Steps to reproduce the behavior:

1. Install ' sudo-rs` on Ubuntu 24.04 using apt
2. Use the default contents in /etc/sudoers-rs
3. Create a sudoers configuration such as /etc/sudoers.d/01_server_admins_group

%[email protected]   ALL=(ALL) NOPASSWD: ALL

5. Run the following command sudo-rs ls
6. See error:

/etc/sudoers.d/01_server_admins_group:2:13: expected host name
%[email protected]   ALL=(ALL) NOPASSWD: ALL
            ^