ErrorHighlight::CoreExt#generate_snippet

# File tmp/rubies/ruby-4.1.0-preview1/lib/error_highlight/core_ext.rb, line 5
        def generate_snippet
  if ArgumentError === self && message =~ /\A(?:wrong number of arguments|missing keyword[s]?|unknown keyword[s]?|no keywords accepted)\b/
    locs = self.backtrace_locations
    return "" if locs.nil? || locs.size < 2
    callee_loc, caller_loc = locs
    callee_spot = ErrorHighlight.spot(self, backtrace_location: callee_loc, point_type: :name)
    caller_spot = ErrorHighlight.spot(self, backtrace_location: caller_loc, point_type: :name)
    if caller_spot && callee_spot &&
        caller_loc.path == callee_loc.path &&
        caller_loc.lineno == callee_loc.lineno &&
        caller_spot == callee_spot
      callee_loc = callee_spot = nil
    end
    ret = +"\n"
    [["caller", caller_loc, caller_spot], ["callee", callee_loc, callee_spot]].each do |header, loc, spot|
      out = nil
      if loc
        out = "    #{ header }: #{ loc.path }:#{ loc.lineno }"
        if spot
          _, _, snippet, highlight = ErrorHighlight.formatter.message_for(spot).lines
          out += "\n    | #{ snippet }      #{ highlight }"
        else
          # do nothing
        end
      end
      ret << "\n" + out if out
    end
    ret
  else
    spot = ErrorHighlight.spot(self)
    return "" unless spot
    return ErrorHighlight.formatter.message_for(spot)
  end
end