lib/scripts/java-gui-setup

clarified: proper return type;

#!/usr/bin/env bash
#
# java-gui-setup --- platform-specific setup for Java/Swing GUI applications

case "$ISABELLE_PLATFORM_FAMILY" in
  macos*)
    JAVA_VERSION="$("$ISABELLE_JDK_HOME/bin/java" -version 2>&1 | head -n 1 | cut -d '"' -f2)"
    JAVA_DOMAIN="com.azul.zulu.${JAVA_VERSION}.java"
    defaults read "$JAVA_DOMAIN" AppleWindowTabbingMode >/dev/null 2>/dev/null ||
      defaults write "$JAVA_DOMAIN" AppleWindowTabbingMode manual >/dev/null 2>/dev/null
    ;;
esac