Handling trailing white space in backend_config.ini

[MichaelTimbert]

Adding a trailing white space to a value in the backend_config.ini file may result in the following error message:

2025-03-17T12:22:06Z [80] [NOTICE] [Zonemaster::Backend::Config] Loading config: /etc/zonemaster/backend_config.ini
Error while loading /usr/local/bin/zonemaster_backend_rpcapi.psgi: File /etc/zonemaster/backend_config.ini: Invalid value for RPCAPI.enable_add_batch_job: yes

The error message is misleading: "Yes" is a valid value.

• A simple solution is to add single quotes around the invalid value (e.g., "Invalid value for RPCAPI.enable_add_batch_job: 'yes ' ") to highlight trailing spaces.

• Another solution is to remove trailing spaces when parsing the configuration file.

[matsduf]

* Another solution is to remove trailing spaces when parsing the configuration file.

That sounds like a good idea. Trailing white space is never intended .