class_docstr: Lexer for Limbo programming language
  
  TODO:
      - maybe implement better var declaration highlighting
      - some simple syntax error highlighting
  
  .. versionadded:: 2.0
class_docstr_tok: ["Lexer","for","Limbo","programming","language","TODO",":","-","maybe","implement","better","var","declaration","highlighting","-","some","simple","syntax","error","highlighting","..","versionadded",":",":","2.0"]
code: def analyse_text(text):
      # Any limbo module implements something
      if re.search(r"^implement \w+;", text, re.MULTILINE):
          return 0.7
  
imports: import re
  from pygments.lexer import RegexLexer, include, bygroups, default
  from pygments.token import Punctuation, Comment, Operator, Keyword, Name, String, Number, Whitespace
label_desc: Use image node_id 1 for calling the LimboLexer obj's underlying member method code with example usage: obj.analyse_text(text) and returns: int