From 013a563ed0fc2cb400d914efffbeb8b87061673c Mon Sep 17 00:00:00 2001
From: Fabian Homborg <FHomborg@gmail.com>
Date: Wed, 10 Mar 2021 09:38:16 +0100
Subject: [PATCH] Only modify terminal modes after config.fish if we have the
 terminal

This tried fiddling with the terminal even if fish didn't own it, e.g.
in

    fish -c 'sleep 5' &

Fixes #7808.
---
 src/reader.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/reader.cpp b/src/reader.cpp
index 6b466a789..ce94a112c 100644
--- a/src/reader.cpp
+++ b/src/reader.cpp
@@ -1342,7 +1342,9 @@ void reader_init() {
 
     // Set up our fixed terminal modes once,
     // so we don't get flow control just because we inherited it.
-    term_donate(/* quiet */ true);
+    if (getpgrp() == tcgetpgrp(STDIN_FILENO)) {
+        term_donate(/* quiet */ true);
+    }
 
     // We do this not because we actually need the window size but for its side-effect of correctly
     // setting the COLUMNS and LINES env vars.