doctor checks XQuartz version

Closes Homebrew/homebrew#14182.

1 files changed, 14 insertions, 0 deletions

diff --git a/Library/Homebrew/cmd/doctor.rb b/Library/Homebrew/cmd/doctor.rb
index 7d1b96211..c02323365 100644
--- a/Library/Homebrew/cmd/doctor.rb
+++ b/Library/Homebrew/cmd/doctor.rb
@@ -973,6 +973,20 @@ end
     EOS
   end
 
+  def check_for_latest_xquartz
+    quartz = MacOS::XQuartz.version
+    return unless quartz
+
+    quartz = Version.new(quartz)
+    latest = Version.new(MacOS::XQuartz.latest_version)
+
+    return if quartz >= latest
+
+    <<-EOS.undent
+      Your XQuartz (#{quartz}) is outdated
+      Please install XQuartz #{latest}.
+    EOS
+  end
 end # end class Checks
 
 module Homebrew extend self