From e3d44dd4bdd901d284ec47a29e0bb7d825f9786b Mon Sep 17 00:00:00 2001
From: Josh Triplett <josh@joshtriplett.org>
Date: Sun, 16 Oct 2022 14:56:03 +0100
Subject: [PATCH] Use IsTerminal in librustdoc

---
 Cargo.lock                | 1 -
 src/librustdoc/Cargo.toml | 1 -
 src/librustdoc/lib.rs     | 5 +++--
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index bf5ff830acc..6630b6479dc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4272,7 +4272,6 @@ version = "0.0.0"
 dependencies = [
  "arrayvec",
  "askama",
- "atty",
  "expect-test",
  "itertools",
  "minifier",
diff --git a/src/librustdoc/Cargo.toml b/src/librustdoc/Cargo.toml
index 7bc35c7d551..63ccee14caa 100644
--- a/src/librustdoc/Cargo.toml
+++ b/src/librustdoc/Cargo.toml
@@ -9,7 +9,6 @@ path = "lib.rs"
 [dependencies]
 arrayvec = { version = "0.7", default-features = false }
 askama = { version = "0.11", default-features = false, features = ["config"] }
-atty = "0.2"
 itertools = "0.10.1"
 minifier = "0.2.2"
 once_cell = "1.10.0"
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index ef01b854e5a..7276b9ce0ee 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -8,6 +8,7 @@
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(drain_filter)]
+#![feature(is_terminal)]
 #![feature(let_chains)]
 #![feature(test)]
 #![feature(never_type)]
@@ -69,7 +70,7 @@ extern crate jemalloc_sys;
 
 use std::default::Default;
 use std::env::{self, VarError};
-use std::io;
+use std::io::{self, IsTerminal};
 use std::process;
 
 use rustc_driver::abort_on_err;
@@ -180,7 +181,7 @@ fn init_logging() {
     let color_logs = match std::env::var("RUSTDOC_LOG_COLOR").as_deref() {
         Ok("always") => true,
         Ok("never") => false,
-        Ok("auto") | Err(VarError::NotPresent) => atty::is(atty::Stream::Stdout),
+        Ok("auto") | Err(VarError::NotPresent) => io::stdout().is_terminal(),
         Ok(value) => early_error(
             ErrorOutputType::default(),
             &format!("invalid log color value '{}': expected one of always, never, or auto", value),