From 190902e98fcde1c9601bf9a674caf0796ed9e46b Mon Sep 17 00:00:00 2001
From: Xu Cheng <xucheng@me.com>
Date: Tue, 1 Sep 2015 16:57:54 +0800
Subject: [PATCH] tap: ensure git is installed

Closes Homebrew/homebrew#43463.

Signed-off-by: Xu Cheng <xucheng@me.com>
---
 Library/Homebrew/cmd/tap.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Library/Homebrew/cmd/tap.rb b/Library/Homebrew/cmd/tap.rb
index 3da9f3f24b..0c8960cbd6 100644
--- a/Library/Homebrew/cmd/tap.rb
+++ b/Library/Homebrew/cmd/tap.rb
@@ -19,6 +19,9 @@ module Homebrew
   end
 
   def install_tap(user, repo, clone_target = nil)
+    # ensure git is installed
+    Utils.ensure_git_installed!
+
     tap = Tap.new user, repo
     return false if tap.installed?
     ohai "Tapping #{tap}"