From d0200e8737569e9e5637f82224de8580b727ced6 Mon Sep 17 00:00:00 2001
From: nandahkrishna <nanda.harishankar@gmail.com>
Date: Wed, 3 Feb 2021 13:15:48 +0530
Subject: [PATCH] cask/config: fix `explicit_s`

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

diff --git a/Library/Homebrew/cask/config.rb b/Library/Homebrew/cask/config.rb
index 44702025a5..8f670a5304 100644
--- a/Library/Homebrew/cask/config.rb
+++ b/Library/Homebrew/cask/config.rb
@@ -188,7 +188,7 @@ module Cask
         # inverse of #env - converts :languages config key back to --language flag
         if key == :languages
           key = "language"
-          value = languages.join(",")
+          value = T.cast(explicit.fetch(:languages, []), T::Array[String]).join(",")
         end
         "#{key}: \"#{value.to_s.sub(/^#{ENV['HOME']}/, "~")}\""
       end.join(", ")