From a88d65acc7e6500d9318d17e6f6d092bb58a0dd4 Mon Sep 17 00:00:00 2001
From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Date: Mon, 22 Mar 2021 14:12:42 +0000
Subject: [PATCH] cmd/list: list casks only if one is installed

---
 Library/Homebrew/cmd/list.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/cmd/list.rb b/Library/Homebrew/cmd/list.rb
index a11b7f21fb..52f853ea66 100644
--- a/Library/Homebrew/cmd/list.rb
+++ b/Library/Homebrew/cmd/list.rb
@@ -119,7 +119,7 @@ module Homebrew
       ohai "Formulae" if $stdout.tty? && !args.formula?
       safe_system "ls", *ls_args, HOMEBREW_CELLAR
 
-      unless args.formula?
+      if !args.formula? && Cask::Caskroom.casks.any?
         if $stdout.tty?
           puts
           ohai "Casks"