--help for --debug instructing use of numeric levels
It's preferred that users use log level names rather than numbers (that may refer to different level on different versions). Yet, --help for most freeciv executables instructs user to give numeric level for --debug on builds without FREECIV_DEBUG.
It's preferred that users use log level names rather than numbers (that may refer to different level on different versions). Yet, --help for most freeciv executables instructs user to give numeric level for --debug on builds without FREECIV_DEBUG.