Remove .script! hack

lib/linguist/language.rb

@@ -541,7 +541,7 @@ module Linguist
     if extnames = extensions[name]
       extnames.each do |extname|
         if !options['extensions'].index { |x| x.downcase.end_with? extname.downcase }
-          warn "#{name} has a sample with extension (#{extname.downcase}) that isn't explicitly defined in languages.yml" unless extname == '.script!'
+          warn "#{name} has a sample with extension (#{extname.downcase}) that isn't explicitly defined in languages.yml"
           options['extensions'] << extname
         end
       end

lib/linguist/samples.rb

@@ -50,16 +50,13 @@ module Linguist
             end
           else
             path = File.join(dirname, filename)
-
-            if File.extname(filename) == ""
-              raise "#{path} is missing an extension, maybe it belongs in filenames/ subdir"
-            end
+            extname = File.extname(filename)
 
             yield({
               :path     => path,
               :language => category,
               :interpreter => Shebang.interpreter(File.read(path)),
-              :extname  => File.extname(filename)
+              :extname  => extname.empty? ? nil : extname
             })
           end
         end

lib/linguist/strategy/filename.rb

@@ -3,17 +3,7 @@ module Linguist
     # Detects language based on filename and/or extension
     class Filename
       def self.call(blob, _)
-        name = blob.name.to_s
-
-        # A bit of an elegant hack. If the file is executable but extensionless,
-        # append a "magic" extension so it can be classified with other
-        # languages that have shebang scripts.
-        extensions = FileBlob.new(name).extensions
-        if extensions.empty? && blob.mode && (blob.mode.to_i(8) & 05) == 05
-          name += ".script!"
-        end
-
-        Language.find_by_filename(name)
+        Language.find_by_filename(blob.name.to_s)
       end
     end
   end