From 2ace9422bc4c19be2d6a77e21e66c6dbd4c6bd52 Mon Sep 17 00:00:00 2001
From: Max Howell
Date: Fri, 16 Mar 2012 12:49:09 +0000
Subject: Better conflict warnings when tapping

---
 Library/Homebrew/cmd/tap.rb | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

(limited to 'Library')

diff --git a/Library/Homebrew/cmd/tap.rb b/Library/Homebrew/cmd/tap.rb
index f87349977..13d9290e3 100644
--- a/Library/Homebrew/cmd/tap.rb
+++ b/Library/Homebrew/cmd/tap.rb
@@ -36,7 +36,9 @@ module Homebrew extend self
         if $?.success?
           ignores << formula.basename.to_s
         else
-          opoo "#{formula.basename('.rb')} conflicts"
+          from = Pathname.new("../Taps").join(formula).tap_ref
+          to = HOMEBREW_LIBRARY.join("Formula/#{formula.basename}").tap_ref
+          opoo "Could not tap #{Tty.white}#{from}#{Tty.reset} over #{Tty.white}#{to}#{Tty.reset}"
         end
       end
     end
@@ -56,3 +58,17 @@ module Homebrew extend self
   end
 
 end
+
+
+class Pathname
+  def tap_ref
+    case self.realpath.to_s
+    when %r{^#{HOMEBREW_LIBRARY}/Taps/(\w+)-(\w+)/(.+)}
+      "#$1/#$2/#{File.basename($3, '.rb')}"
+    when %r{^#{HOMEBREW_LIBRARY}/Formula/(.+)}
+      "mxcl/master/#{File.basename($1, '.rb')}"
+    else
+      self.basenname('.rb').to_s
+    end
+  end
+end
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