Unset DESKTOP_STARTUP_ID environment variable

This unsets the DESKTOP_STARTUP_ID environment variable at startup, to
prevent child processes from inheriting it. This solves problems with
child windows not properly spawning in the foreground with KDE.

More information can be found here:
https://specifications.freedesktop.org/startup-notification-spec/startup-notification-latest.txt

2 files changed, 9 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 137b19f7..08c7e774 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- GUI programs launched by Alacritty starting in the background on X11
+
 ## 0.3.3
 
 ### Packaging
diff --git a/alacritty_terminal/src/tty/mod.rs b/alacritty_terminal/src/tty/mod.rs
index c0ac7a31..16ae96ce 100644
--- a/alacritty_terminal/src/tty/mod.rs
+++ b/alacritty_terminal/src/tty/mod.rs
@@ -89,6 +89,9 @@ pub fn setup_env(config: &Config) {
     // Advertise 24-bit color support
     env::set_var("COLORTERM", "truecolor");
 
+    // Prevent child processes from inheriting startup notification env
+    env::remove_var("DESKTOP_STARTUP_ID");
+
     // Set env vars from config
     for (key, value) in config.env.iter() {
         env::set_var(key, value);