First(incomplete) test of creating a Pygments lexer definition for Newspeak

PygmentsNewspeakLexer.py

class NewspeakLexer(RegexLexer):
    """
    For `Newspeak <http://newspeaklanguage.org/>` syntax.


    """
    name = 'Newspeak'
    filenames = ['*.ns2']
    aliases = ['newspeak', ]
    mimetypes = ['text/x-newspeak']

    tokens = {
       'root' : [
           (r'\b(Newsqueak2)\b',Keyword.Declaration),
           (r"'[^']*'",String),
           (r'\b(class)(\s+)([a-zA-Z0-9_]+)(\s*)',bygroups(Keyword.Declaration,Text,Name.Class,Text)),
           (r'\b(mixin|self|super|private|public|protected|nil|true|false)\b',Keyword),
           (r'([a-zA-Z0-9_]+\:)(\s*)([a-zA-Z_]\w+)',bygroups(Name.Function,Text,Name.Variable)),
           (r'([a-zA-Z0-9_]+)(\s*)(=)',bygroups(Name.Attribute,Text,Operator)),
           (r'<[a-zA-Z0-9_]+>',Comment.Special),
           include('expressionstat'),
           include('whitespace')
        ],

       'expressionstat': [
          (r'(\d+\.\d*|\.\d+|\d+[fF])[fF]?', Number.Float),
          (r'\d+', Number.Integer),
          (r'(:\w+)',Name.Variable),
          (r'(\w+)(::)',bygroups(Name.Variable,Operator)),
          (r'(\w+:)',bygroups(Name.Function)),
          (r'(\w+)',bygroups(Name.Variable)),
          (r'(\(|\))',Punctuation),
          (r'(\[|\])',Punctuation),
          (r'(\{|\})',Punctuation),

          (r'(\^|\+|\/|~|\*|<|>|=|@|%|\||&|\?|!|,|-|:)',Operator),
          (r'\.|;',Punctuation),
          include('whitespace'),
          include('literals'),
       ],
       'literals': [
         (r'\$.',String),
         (r"'[^']*'",String),
         (r"#'[^']*'",String.Symbol),
         (r"#(\w+:)",String.Symbol),
         (r"#\w+",String.Symbol),
         (r"#(\+|\/|~|\*|<|>|=|@|%|\||&|\?|!|,|-)+",String.Symbol)

       ],
       'whitespace' : [
         (r'\n',Text),
         (r'\s+',Text),
         (r'"[^"]*"',Comment)
       ]
    }