diff --git a/lib/linguist/blob_helper.rb b/lib/linguist/blob_helper.rb
index be4483cf..f8149c82 100644
--- a/lib/linguist/blob_helper.rb
+++ b/lib/linguist/blob_helper.rb
@@ -467,6 +467,20 @@ module Linguist
         Language['R']
       end
     end
+    
+    # Internal: Guess language of .t files.
+    #
+    # Makes fairly sure that it is Turing.
+    # Turing is not very popular so it would not be good to have perl users' files being confused.
+    #
+    # Returns a Language.
+    def guess_t_language
+      if lines.grep(/:=/).any? && lines.grep(/proc |procedure |fcn |function /).any? && lines.grep(/var/).any?
+        Language['Turing']
+      else
+        Language['Perl']
+      end
+    end
 
     # Internal: Guess language of .gsp files.
     #
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index a7de46f3..36748a7d 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -717,6 +717,7 @@ Perl:
   type: programming
   overrides:
   - .pl
+  - .t
   primary_extension: .pl
   extensions:
   - .PL
@@ -965,6 +966,14 @@ Textile:
   lexer: Text only
   extensions:
   - .textile
+  
+Turing:
+  type: programming
+  lexer: Text only
+  primary_extension: .t
+  extensions:
+  - .t
+  - .tu
 
 Twig:
   type: markup