Colors not working when redirecting stdout to file

[tmm1]

I have a simple go program that logs to stderr, and produces some output that is redirected to a file.

It seems color detection is based on stdout status instead of stderr status?

[tmm1]

To clarify further.. the logs are still styled with brightness, but not colors. When I redirect stderr to a file, then it comes through correctly without any styling at all.

[aymanbagabas]

This seems to be a bug in the current used version of Termenv. For the time being, you could work around this bug using

package main

import (
  ...
  "github.com/muesli/termenv"
  "github.com/charmbracelet/lipgloss"
)

func main() {
  lipgloss.SetColorProfile(termenv.TrueColor)
  // or
  lipgloss.SetColorProfile(termenv.ANSI256)
}

[tmm1]

Thanks, that works for now.

I tried to figure out where the bug is in termenv but didn't have much luck. LMK if you discover any more details.

[aymanbagabas]

Log uses Lipgloss v0.6 which uses Termenv v0.11. Termenv assumes using os.Stdout and falls back to no-colors if it's not a TTY. https://github.com/muesli/termenv/blob/v0.11.0/termenv.go#L45

[tmm1]

Aha okay that explains it. I was looking at the code for master and couldn't see that.

[muesli]

Note: you can typically enforce color output by setting CLICOLOR_FORCE to 1.

[aymanbagabas]

Fixed in https://github.com/charmbracelet/log/commit/a2100d4992f68bc3d146c025ee81d850b5003162

[tmm1]

Thanks, confirmed fixed!