Programming language: Rust
License: Apache License 2.0
Tags: Terminal     Color     Command-line     Style     Format     Paint    
Latest version: v0.3.0

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Coloring terminal output

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term-painter is a cross-platform (i.e. also non-ANSI terminals) Rust library for coloring and formatting terminal output. It provides easy ways to format various things and uses the crate rust-lang/term to do the actual formatting. Please read "When (not) to use this crate".

Note: I created another library for coloring terminal text: bunt. I like it much better, so maybe consider using bunt instead of term-painter :-)


println!("{} | {} | {} | {} | {}",

Red.with(|| {
    Bold.with(|| {
        print!(" BoldRed {} BoldRed ", Underline.paint("Underline"));
    print!("JustRed ");

    print!("{}", Blue.paint("Blue (overwrite) "));
    Green.with(|| {
        println!("Green (overwrite)");

alt text

It's easy to use and integrates well with println!/print!. The main design goal was to make it simple. This has one performance disadvantage: It will often reset the terminal style after each printing operation. But performance isn't usually hugely important when printing on the terminal, so simplicity was more important for the design of this library.

More examples here (examples/main.rs) or in the Documentation.

When (not) to use this crate

There are more terminal color crates than stars in the observable universe, therefore it's a valid question to ask "which one is best"? Unfortunately, there is no clear answer, I think.

Don't use this crate, if:

  • you want full power of what happens (consider using rust-lang/term instead), or
  • you want to print from multiple threads (consider using termcolor or bunt instead), or
  • you want to color/format text you print on something else than stdout (however, term-painter might add support for stderr in the future)
  • you want an actively developed crate (see "Status of this crate")
  • you want to use a crate with a fancy name (term-painter is such a boring name :unamused:)

You probably shouldn't use this crate, if:

  • you don't need to support non-ANSI terminals (Only supporting ANSI-formatting gives the author of the lib greater flexibility in designing the API, thus potentially making it easier and more powerful. See section "Cross Platform". Consider using ansi-term, colored, yansi, ... instead.), or
  • you expect a time-proven library

Use this crate, if:

  • you need support for non-ANSI terminals, and
  • you are developing a non-mission critical project

Cross Platform

This crate uses rust-lang/term internally. term supports all (or rather: many) platforms, hence term-painter does, too.

How does it work? In order to work, this crate depends on a specific way how println! and friends evaluate their arguments (which is the common-sense way). There are no guarantees about argument evaluation, but currently it works. And honestly, it's unlikely that this way of evaluation ever changes. But, for example, if println!() would always call format!() first and print the resulting String, it wouldn't work.

To give a simplified explanation of the terminal-world: there are ANSI-terminal and non-ANSI Terminals. ANSI-formatting works by inserting special control characters into the string. Thus you can easily store the formatted string in a String to print it later. Non-ANSI terminals work differently, and the most commonly used one is cmd which is part of Windows 7/10. Formatting for cmd works by calling methods of the winapi before and after printing. Thus you cannot easily store a formatted string. Apart from that, AFAIK there are not that many developers mainly using cmd -- most Windows developer use IDEs alone or another terminal for Windows (there are plenty).

In summary: most terminals support ANSI-coloring, non-ANSI-terminals make the world more complicated.

Status of this crate

This crate is not actively developed anymore. The API is likely to stay as it is. I doubt this crate will reach its 1.0 milestone. This doesn't mean that this crate doesn't work! You can still use it, if it fits your needs.


I've got some design ideas from rust-ansi-term. I decided to make my own crate though, since my goals were too different from ansi-term (specifically: ansi-term does not work everywhere).


Licensed under either of

at your option.


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

*Note that all licence references and agreements mentioned in the term-painter README section above are relevant to that project's source code only.