Question 1

How to disable colors in pretty-env-logger?

Accepted Answer

You can set the RUST_LOG_STYLE environment variable to 'never' to disable colors, but note that pretty-env-logger is designed for colored output, and this relies on env_logger's underlying behavior. Alternatively, use a different terminal or library if color-free logging is a priority.

Question 2

Does pretty-env-logger support logging to files?

Accepted Answer

No, it only writes to standard error (stderr). For file logging, you need to redirect output externally or use a more feature-rich logging library like tracing or log4rs that includes file appenders.

Question 3

Is pretty-env-logger good for production use?

Accepted Answer

It's primarily aimed at development due to its simplicity and colored output. For production, consider libraries with structured logging, rotation, and better performance, as pretty-env-logger lacks these advanced features.

Question 4

How does pretty-env-logger compare to env_logger?

Accepted Answer

pretty-env-logger adds colored output on top of env_logger for better readability, but it doesn't introduce new functionality. If you need more control or features, env_logger or other libraries might be preferable, as pretty-env-logger is essentially a cosmetic enhancement.

Question 5

Can I filter logs by module with pretty-env-logger?

Accepted Answer

Yes, using the RUST_LOG environment variable with module paths, like `RUST_LOG=my_module=info`, but this is a feature of env_logger, and pretty-env-logger doesn't extend it. The configuration is limited to what env_logger supports.

Question 6

How to change log colors in pretty-env-logger?

Accepted Answer

pretty-env-logger uses default colors and doesn't provide APIs for custom color schemes. You would need to modify the source code or use a different library like colored or ansi_term for more control over terminal colors.

pretty-env-logger

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