Macro cli_log::init_cli_log

macro_rules! init_cli_log {
    () => { ... };
    ($app_name: expr) => { ... };
}

configure the application log according to env variable

Example:

cli_log::init_cli_log!();

You may specify an altername application name instead of your crate name:

cli_log::init_cli_log!("my-app");

The application name will also be used to derive the env variable name giving the log level, for example MY_APP_LOG=info for an application named my-app.