From 049d1138c94b1654a80b3afc164bcc5c672560f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=BD=D0=B0=D0=B1?= <nabijaczleweli@nabijaczleweli.xyz>
Date: Thu, 25 Aug 2022 17:58:14 +0200
Subject: [PATCH] Don't output colours by default if TERM=dumb or NO_COLOR=1
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This matches ZFS, and is mostly état d'art

Closes #542
---
 src/options.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/options.rs b/src/options.rs
index 7281a6201..4b83a2843 100644
--- a/src/options.rs
+++ b/src/options.rs
@@ -1,7 +1,7 @@
 use std::fs::File;
 use std::path::PathBuf;
 use std::process::{Command, Stdio};
-use std::{cmp, fmt, io};
+use std::{cmp, env, fmt, io};
 
 use anyhow::ensure;
 use atty::Stream;
@@ -298,6 +298,14 @@ impl Options {
                     || !atty::is(Stream::Stdout)
                 {
                     OutputStyleOption::Basic
+                } else if !(env::var_os("TERM")
+                    .map(|t| t != "unknown" && t != "dumb")
+                    .unwrap_or(false)
+                    && env::var_os("NO_COLOR")
+                        .map(|t| t.is_empty())
+                        .unwrap_or(true))
+                {
+                    OutputStyleOption::NoColor
                 } else {
                     OutputStyleOption::Full
                 }