     while args.length > 0
       arg = args.shift()
 
-      if arg == '-h' or arg == '--help'
-        @command = 'showHelp'
-
-      else if arg == '-v' or arg == '--version'
-        @command = 'showVersion'
-
-      else if arg == '-i' or arg == '--inspect'
-        @command = 'inspect'
-
-      else if arg == '-u' or arg == '--update'
-        @command = 'update'
-
-      else if arg == '-b' or arg == '--browsers'
-        @requirements = args.shift().split(',').map (i) -> i.trim()
-
-      else if arg == '-o' or arg == '--output'
-        @outputFile = args.shift()
-
-      else if ( arg.match(/^-\w$/) || arg.match(/^--\w[\w-]+$/) )
-        @command = undefined
-
-        @error "autoprefixer: Unknown argument #{ arg }"
-        @error ''
-        @error @help()
-
-      else
-        @inputFiles.push(arg)
+      switch arg
+        when '-h', '--help'
+          @command = 'showHelp'
+
+        when '-v', '--version'
+          @command = 'showVersion'
+
+        when '-i', '--inspect'
+          @command = 'inspect'
+
+        when '-u', '--update'
+          @command = 'update'
+
+        when '-b', '--browsers'
+          @requirements = args.shift().split(',').map (i) -> i.trim()
+
+        when '-o', '--output'
+          @outputFile = args.shift()
+
+        else
+          if arg.match(/^-\w$/) || arg.match(/^--\w[\w-]+$/)
+            @command = undefined
+
+            @error "autoprefixer: Unknown argument #{ arg }"
+            @error ''
+            @error @help()
+
+          else
+            @inputFiles.push(arg)
+
+    return
 
   # Print help
   showHelp: (done) ->


    updater.run()

  # Mark that there is another asyn work
  startWork: ->
    @waiting += 1


    @parseArguments()

  # Quick help message
  help: -> '''
    Usage: autoprefixer [OPTION...] FILES

    Parse CSS files and add prefixed properties and values.

    Options:
      -b, --browsers BROWSERS  add prefixes for selected browsers
      -o, --output FILE        set output CSS file
      -i, --inspect            show selected browsers and properties
      -h, --help               show help text
      -v, --version            print program version
    '''

  # Options description
  desc: -> '''
    Files:
      By default, prefixed CSS will rewrite original files.
      If you didn't set input files, autoprefixer will +
        read from stdin stream.
      Output CSS will be written to stdout stream on +
        `-o -' argument or stdin input.

    Browsers:
      Separate browsers by comma. For example, `-b "> 1%, opera 12"'.
      You can set browsers by global usage statictics: `-b \"> 1%\"'.
      or last version: `-b "last 2 versions"' (by default).
    '''
    .replace(/\+\s+/g, '')

  # Print to stdout
  print: (str) ->
