rouge-ruby/rouge · error · RuntimeError

bad guesser: #{g}

Error message

bad guesser: #{g}

What it means

Error "bad guesser: #{g}" thrown in rouge-ruby/rouge.

Source

Thrown at lib/rouge/guesser.rb:21

module Rouge
  class Guesser
    class Ambiguous < StandardError
      attr_reader :alternatives
      def initialize(alternatives); @alternatives = alternatives; end

      def message
        "Ambiguous guess: can't decide between #{alternatives.map(&:tag).inspect}"
      end
    end

    def self.guess(guessers, lexers)
      original_size = lexers.size

      guessers.each do |g|
        new_lexers = case g
        when Guesser then g.filter(lexers)
        when proc { |x| x.respond_to? :call } then g.call(lexers)
        else raise "bad guesser: #{g}"
        end

        lexers = new_lexers && new_lexers.any? ? new_lexers : lexers
      end

      # if we haven't filtered the input at *all*,
      # then we have no idea what language it is,
      # so we bail and return [].
      lexers.size < original_size ? lexers : []
    end

    def collect_best(lexers, opts={}, &scorer)
      best = []
      best_score = opts[:threshold]

      lexers.each do |lexer|
        score = yield(lexer)

View on GitHub (pinned to bd7dad7b09)

When it happens

Trigger: Thrown at lib/rouge/guesser.rb:21 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/7a8e24a156237a9b. Report an issue: GitHub.