deprecate the textmate formatter (seems we missed this one)

lib/rspec/core/formatters.rb

@@ -138,6 +138,13 @@ def built_in_formatter(key)
       when 'j', 'json'
         JsonFormatter
       when 't', 'textmate'
+        if defined?(::RSpec::Mate::Formatters::TextMateFormatter)
+          RSpec.deprecate "Using the text`#{key.to_s}` as a shortcut for the TextMateFormatter",
+          :replacement => "`::RSpec::Mate::Formatters::TextMateFormatter`"
+        else
+          RSpec.deprecate "Using rspec-core's `::RSpec::Core::TextMateFormatter`",
+          :replacement => "the `rspec-tmbundle` gem and it's `::RSpec::Mate::Formatters::TextMateFormatter`"
+        end
         TextMateFormatter
       end
     end

spec/rspec/core/configuration_spec.rb

@@ -1054,6 +1054,16 @@ def metadata_hash(*args)
         expect(config.formatters.first).to be_an_instance_of Formatters::DocumentationFormatter
       end
 
+      it 'warns of deprecation of the text mate formatter' do
+        expect_deprecation_with_call_site __FILE__, __LINE__ + 1, /rspec-core/
+        config.add_formatter 't'
+      end
+
+      it 'warns of deprecation of the shortcut for the text mate formatter' do
+        stub_const("::RSpec::Mate::Formatters::TextMateFormatter", double)
+        expect_deprecation_with_call_site __FILE__, __LINE__ + 1, /shortcut/
+        config.add_formatter 't'
+      end
 
       context "with a 2nd arg defining the output" do
         it "creates a file at that path and sets it as the output" do

spec/rspec/core/formatters/text_mate_formatter_spec.rb

@@ -14,6 +14,7 @@ module Formatters
         end
 
         let(:generated_html) do
+          allow(RSpec).to receive(:deprecate)
           options = RSpec::Core::ConfigurationOptions.new(
             %w[spec/rspec/core/resources/formatter_specs.rb --format textmate --order defined]
           )