Added Turing language detection

lib/linguist/blob_helper.rb

@@ -468,6 +468,20 @@ module Linguist
       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.
     #
     # Returns a Language.

lib/linguist/languages.yml

@@ -717,6 +717,7 @@ Perl:
   type: programming
   overrides:
   - .pl
+  - .t
   primary_extension: .pl
   extensions:
   - .PL
@@ -966,6 +967,14 @@ Textile:
   extensions:
   - .textile
   
+Turing:
+  type: programming
+  lexer: Text only
+  primary_extension: .t
+  extensions:
+  - .t
+  - .tu
+
 Twig:
   type: markup
   group: PHP