From a8165b6dbd9837c0ba3c8a0fa368e80aaf5a5dd9 Mon Sep 17 00:00:00 2001
From: Martin Afanasjew <martin@afanasjew.de>
Date: Mon, 13 Jun 2016 02:51:50 +0200
Subject: [PATCH] scm/git: allow introspecting path lookup

Print path of first detected Git instead of executing it. This is hidden
behind a `--homebrew=print-path` argument that is unlikely to conflict
with any existing or future Git flags.
---
 Library/ENV/scm/git | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Library/ENV/scm/git b/Library/ENV/scm/git
index 1e74a175dc..091b1713dd 100755
--- a/Library/ENV/scm/git
+++ b/Library/ENV/scm/git
@@ -23,6 +23,10 @@ def exec(*args)
   # prevent fork-bombs
   arg0 = args.first
   return if arg0 =~ /^#{F}/i || Pathname.new(arg0).realpath == SELF_REAL
+  if ARGV == %w[--homebrew=print-path]
+    puts arg0
+    exit
+  end
   super
 end