utils: tell people to report deprecations to tap.

This should hopefully avoid Homebrew/brew or Homebrew/homebrew-core
having these exceptions reported to us.

Library/Homebrew/test/test_utils.rb

@@ -223,4 +223,17 @@ class UtilTests < Homebrew::TestCase
     s = truncate_text_to_approximate_size(long_s, n, :front_weight => 1.0)
     assert_equal(("x" * (n - glue.length)) + glue, s)
   end
+
+  def test_odeprecated
+    ARGV.stubs(:homebrew_developer?).returns false
+    e = assert_raises(FormulaMethodDeprecatedError) do
+      odeprecated("method", "replacement",
+        :caller => ["#{HOMEBREW_LIBRARY}/Taps/homebrew/homebrew-core/"],
+        :die => true)
+    end
+    assert_match "method", e.message
+    assert_match "replacement", e.message
+    assert_match "homebrew/homebrew-core", e.message
+    assert_match "homebrew/core", e.message
+  end
 end

Library/Homebrew/utils.rb

@@ -130,8 +130,13 @@ def odeprecated(method, replacement = nil, options = {})
   # - Location outside of 'compat/'.
   # - Location of caller of deprecated method (if all else fails).
   backtrace = options.fetch(:caller, caller)
+  tap_message = nil
   caller_message = backtrace.detect do |line|
-    line.start_with?("#{HOMEBREW_LIBRARY}/Taps/")
+    if line =~ %r{^#{Regexp.escape HOMEBREW_LIBRARY}/Taps/([^/]+/[^/]+)/}
+      tap = Tap.fetch $1
+      tap_message = "\nPlease report this to the #{tap} tap!"
+      true
+    end
   end
   caller_message ||= backtrace.detect do |line|
     !line.start_with?("#{HOMEBREW_LIBRARY_PATH}/compat/")
@@ -141,7 +146,7 @@ def odeprecated(method, replacement = nil, options = {})
   message = <<-EOS.undent
     Calling #{method} is #{verb}!
     #{replacement_message}
-    #{caller_message}
+    #{caller_message}#{tap_message}
   EOS
 
   if ARGV.homebrew_developer? || options[:die]