From 23376bad7512e5e66869e512aca1e0177c51a54f Mon Sep 17 00:00:00 2001
From: Max Mueggler <maximumsomething@gmail.com>
Date: Thu, 18 Mar 2021 11:17:41 -0400
Subject: [PATCH] Speed up cask pkg uninstallation when there's many
 directories to delete.

Results in an order of magnitude speedup for uninstalling large packages such as mactex.
---
 Library/Homebrew/cask/pkg.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Library/Homebrew/cask/pkg.rb b/Library/Homebrew/cask/pkg.rb
index d999c35f21..47134fbc42 100644
--- a/Library/Homebrew/cask/pkg.rb
+++ b/Library/Homebrew/cask/pkg.rb
@@ -110,6 +110,12 @@ module Cask
     RMDIR_SH = <<~'BASH'
       set -euo pipefail
 
+      # Try removing as many empty directories as possible with a single
+      # `rmdir` call to avoid or at least speed up the loop below.
+      if /bin/rmdir -- "${@}" &>/dev/null; then
+        exit
+      fi
+
       for path in "${@}"; do
         symlink=true
         [[ -L "${path}" ]] || symlink=false