sds/overcommit · error · Overcommit::Exceptions::MessageProcessingError

Unexpected output: invalid line number found in '#{message}'

Error message

Unexpected output: invalid line number found in '#{message}'

What it means

Error "Unexpected output: invalid line number found in '#{message}'" thrown in sds/overcommit.

Source

Thrown at lib/overcommit/utils/messages_utils.rb:58

      private

      def extract_file(match, message)
        return unless match.names.include?('file')

        if match[:file].to_s.empty?
          raise Overcommit::Exceptions::MessageProcessingError,
                "Unexpected output: no file found in '#{message}'"
        end

        match[:file]
      end

      def extract_line(match, message)
        return unless match.names.include?('line')

        Integer(match[:line])
      rescue ArgumentError, TypeError
        raise Overcommit::Exceptions::MessageProcessingError,
              "Unexpected output: invalid line number found in '#{message}'"
      end

      def extract_type(match, message, type_categorizer)
        if type_categorizer
          type_match = match.names.include?('type') ? match[:type] : nil
          type = type_categorizer.call(type_match)
          unless Overcommit::Hook::MESSAGE_TYPES.include?(type)
            raise Overcommit::Exceptions::MessageProcessingError,
                  "Invalid message type '#{type}' for '#{message}': must " \
                  "be one of #{Overcommit::Hook::MESSAGE_TYPES.inspect}"
          end
          type
        else
          :error # Assume error since no categorizer was defined
        end
      end
    end

View on GitHub (pinned to fee0cd74b2)

Solutions

1. Ensure the line-number field of each tool output line is a valid integer.
2. Adjust the tool's output format or the hook's parsing regex so line numbers are extracted as numeric values.

When it happens

Trigger: Thrown at lib/overcommit/utils/messages_utils.rb:58 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of sds/overcommit@fee0cd74b2 (2026-08-23). Data as JSON: /api/errors/60ec5700416a717d. Report an issue: GitHub.