rouge-ruby/rouge · error · RuntimeError

RegexLexer#group is deprecated: use #groups instead

Error message

RegexLexer#group is deprecated: use #groups instead

What it means

Error "RegexLexer#group is deprecated: use #groups instead" thrown in rouge-ruby/rouge.

Source

Thrown at lib/rouge/regex_lexer.rb:565

    end

    # Yield a token.
    #
    # @param tok
    #   the token type
    # @param val
    #   (optional) the string value to yield.  If absent, this defaults
    #   to the entire last match.
    def token(tok, val=@current_stream[0])
      yield_token(tok, val)
    end

    # @deprecated
    #
    # Yield a token with the next matched group.  Subsequent calls
    # to this method will yield subsequent groups.
    def group(tok)
      raise "RegexLexer#group is deprecated: use #groups instead"
    end

    # Yield tokens corresponding to the matched groups of the current
    # match.
    def groups(*tokens)
      tokens.each_with_index do |tok, i|
        yield_token(tok, @current_stream[i+1])
      end
    end

    # Delegate the lex to another lexer. We use the `continue_lex` method
    # so that #reset! will not be called.  In this way, a single lexer
    # can be repeatedly delegated to while maintaining its own internal
    # state stack.
    #
    # @param [#lex] lexer
    #   The lexer or lexer class to delegate to
    # @param [String] text

View on GitHub (pinned to bd7dad7b09)

When it happens

Trigger: Thrown at lib/rouge/regex_lexer.rb:565 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of rouge-ruby/rouge@bd7dad7b09 (2026-08-23). Data as JSON: /api/errors/b86acde390efbdc6. Report an issue: GitHub.