lpil/gleeunit

`gleam_test` always produces output with ANSI escape codes

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#63 opened on Mar 2, 2026

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help wanted

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Description

I use the neovim make command to run gleam test from within neovim. This works, but the output of the test command uses ANSI escape codes for colored output. The output looks like the screenshot below. I was hoping there would be a way to turn off the colors?

Contributor guide

Research direction
Look for the function that prints test results in the Gleam codebase. Typically ANSI color codes are added via escape sequences. Adding an option or environment variable to disable them would solve this.
Tech stack
None
Domain
testing
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Gleam
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80