Terragrunt still outputting color codes with --no-color flag

[ag-TJNII]

Describe the bug

$ terragrunt --no-color --version
^[]11;rgb:0000/0000/0000^Gterragrunt version v0.75.6

Steps To Reproduce

Run terragrunt --no-color --version in a terminal that doesn't honor the color escapes used.

Expected behavior

Terragrunt should not output any color escape sequences when --no-color is passed, even if that escape sequence should be neutral.

Nice to haves

• Terminal output
• Screenshots

Versions

• Terragrunt version: v0.75.6
• OpenTofu/Terraform version: OpenTofu v1.9.0
• Environment details (Ubuntu 20.04, Windows 10, etc.): Alpine Linux

Additional context

Add any other context about the problem here.

[yhakbar]

@ag-TJNII Are you sure this isn't your terminal?

I just ran the following:

$ terragrunt --no-color --version &> /tmp/output

And didn't see any escape sequences there. Same with terragrunt --no-color plan.

[ag-TJNII]

I do think my terminal is a factor but it's a factor in that it's making it visible. No other commands are doing this. Terragrunt 0.66 doesn't output these control codes.

I tried messing with $TERM but that had no impact. If I pipe the output through cat it behaves as expected, regardless of the --no-color flag:

$ terragrunt --no-color --version | cat
terragrunt version v0.75.6
$ terragrunt --version | cat           
terragrunt version v0.75.6

Same with backgrounding it:

$ terragrunt --version &
[1] 294
terragrunt version v0.75.6
[1]+  Done                    terragrunt --version

So it looks like it outputs that control sequence if it detects a TTY.

[yhakbar]

@ag-TJNII

Do you have a reliable way I can reproduce this?