Getting raw ansi codes in windows terminal

[mainrs]

Not sure why this happens as I always thought Windows terminal supports ANSI escape codes. Here is an example output:

$ cargo run
Error:
   0: ←[91mMisformatted label definition file. Make sure the file is valid json!←[0m
   1: ←[91mmissing field `templates` at line 104 column 1←[0m

Location:
   ←[35mC:$HOME\.cargo\registry\src\github.com-1ecc6299db9ec823\gh-labels-cli-0.1.8\src\file.rs←[0m:←[35m53←[0m

Backtrace omitted.
Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.

Windows Terminal Preview
Version: 1.7.572.0
rustc 1.50.0 (cb75ad5db 2021-02-10)
color-eyre 0.5.10
eyre 0.6.5

[yaahc]

Is it only color-eyre that is doing this? I'm curious to see if you use other cli tools that colorize their output, do their color codes show up verbatim or does it still work? And if so are they outputting ANSI escape codes or are they using windows APIs?

I don't have access to Windows Terminal Preview atm so it might take me a while to get around to reproducing this myself.

[mainrs]

Crates depending on termcolor:

• cargo
• ripgrep

Crates depending on colored:

• color-eyre
• cargo-make
• cargo-geiger (does not compile)

Crates depending on owo-colors:

• hex-rgb

Looks like it's only color-eyre. I made sure that I've called color_eyre::install() :)

Windows Terminal: https://github.com/microsoft/terminal/releases/tag/v1.7.572.0

[yaahc]

wow, other crates depending on owo-colors worked??? What version of owo-colors are they depending on?

[mainrs]

color-eyre: ^1.2.1
hex-rgb: ^1.1.3

If not installed with the --locked flag they both would resolve to the newest minor which would be 1.3.0, which makes this even weirder... 1.3.0 added support for tty checking. It's gated behind a feature flag though.

Edit: I did more testing. I have a crate that hard-encodes ANSI colored strings into it:

pub const INFO_SYMBOL: Emoji = Emoji::new("\u{1b}[34mℹ\u{1b}[0m", "\u{1b}[34mi\u{1b}[0m");

And these fail as well:

$ gh labels -r https://github.com/SirWindfield/terminal-spinners-rs update --purge
←[34mℹ←[0m Purging all 24 labels...
←[34mℹ←[0m Repository has 0 labels, creating 24 and updating 0...

I am so clueless... I have no clue why one CLI (hex-rgb) works but the other library (color-eyre) does not... For the sake of completeness I also tested on the newest stable release of WT (Version: 1.6.10571.0), same behavior.

[sclu1034]

I'm running into this issue as well, except cross-compiled on Linux, running through Wine:

cargo run --target x86_64-pc-windows-gnu --example=usage
# or if you don't use a binfmt
cargo build --target x86_64-pc-windows-gnu --example=usage
wine ./target/x86_64-pc-windows-gnu/debug/examples/usage.exe

Interestingly, the tracing event log is perfectly colored, and bold and italics always work. Only color codes in the error message and span trace are messed up.

Version: 4a7b4d6

[FlareFlo]

Any temporary fix to this, such as conditionally disabling color on windows? Ive looked but not found a way to disable color for windows, unless i pull in regular eyre just for said windows build.