ANSI escape codes in error messages in Firefox

[Kangz]

Trying to fixup the webgpu-samples to run in Firefox I got the following error message from Naga:

Shader validation �[0m�[1m�[38;5;9merror�[0m�[1m: �[0m
   �[0m�[34m┌─�[0m :55:7
   �[0m�[34m│�[0m
�[0m�[34m55�[0m �[0m�[34m│�[0m   if (�[0m�[31mcMassCount > 0�[0m) {
   �[0m�[34m│�[0m       �[0m�[31m^^^^^^^^^^^^^^�[0m �[0m�[31mnaga::Expression [100]�[0m

The ANSI escape codes are adding a TON of noise that make it hard to understand what the issue is. If needed I can try to roll back my changes to retrieve the shader that was causing the issue. Let me know.

[jimblandy]

Thanks for filing this. I can reproduce this locally.

It only seems to apply to errors from Naga validation; WGSL front end errors are all right:

Shader '' parsing error: unknown attribute: 'vertexx'
  ┌─ wgsl:4:2
  │
4 │ @vertexx
  │  ^^^^^^^ unknown attribute

[jimblandy]

The problem actually seems to be in wgpu:

        let mut writer = term::termcolor::Ansi::new(Vec::new());

[teoxoy]

Fixed in gfx-rs/wgpu#3591