From 7beed252270b5db0da7f08d1e60922fc99fbf073 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?fn=20=E2=8C=83=20=E2=8C=A5?=
 <70830482+FnControlOption@users.noreply.github.com>
Date: Mon, 23 Aug 2021 20:37:02 -0700
Subject: [PATCH] cmd/cache: add --HEAD switch

---
 Library/Homebrew/cmd/--cache.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/cmd/--cache.rb b/Library/Homebrew/cmd/--cache.rb
index a49e5b3c33..2e945cf877 100644
--- a/Library/Homebrew/cmd/--cache.rb
+++ b/Library/Homebrew/cmd/--cache.rb
@@ -24,12 +24,14 @@ module Homebrew
              description: "Show the cache file used when building from source."
       switch "--force-bottle",
              description: "Show the cache file used when pouring a bottle."
+      switch "--HEAD",
+             description: "Show the cache file used when building from HEAD."
       switch "--formula",
              description: "Only show cache files for formulae."
       switch "--cask",
              description: "Only show cache files for casks."
 
-      conflicts "--build-from-source", "--force-bottle", "--cask"
+      conflicts "--build-from-source", "--force-bottle", "--HEAD", "--cask"
       conflicts "--formula", "--cask"
 
       named_args [:formula, :cask]
@@ -60,6 +62,8 @@ module Homebrew
   def print_formula_cache(formula, args:)
     if fetch_bottle?(formula, args: args)
       puts formula.bottle.cached_download
+    elsif args.HEAD?
+      puts formula.head.cached_download
     else
       puts formula.cached_download
     end