From b1b94187af3dc4194721bc1a15bff1ec7a904eb6 Mon Sep 17 00:00:00 2001
From: Yukai Chou <muzimuzhi@gmail.com>
Date: Wed, 5 Apr 2023 03:25:59 +0800
Subject: [PATCH] tap: tighten `formula_file?(file)`

Cask is never a formula.
---
 Library/Homebrew/tap.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/tap.rb b/Library/Homebrew/tap.rb
index 3439ec0c92..fb09122cb7 100644
--- a/Library/Homebrew/tap.rb
+++ b/Library/Homebrew/tap.rb
@@ -570,7 +570,7 @@ class Tap
     file = file.expand_path(path)
     return false unless ruby_file?(file)
 
-    file.to_s.start_with?("#{formula_dir}/")
+    file.to_s.start_with?("#{formula_dir}/") && !file.to_s.start_with?("#{cask_dir}/")
   end
 
   # return true if given path would present a {Cask} file in this {Tap}.