class ActionView::Template::Error
def source_extract(indentation = 0)
def source_extract(indentation = 0) return [] unless num = line_number num = num.to_i source_code = @template.encode!.split("\n") start_on_line = [ num - SOURCE_CODE_RADIUS - 1, 0 ].max end_on_line = [ num + SOURCE_CODE_RADIUS - 1, source_code.length].min indent = end_on_line.to_s.size + indentation return [] unless source_code = source_code[start_on_line..end_on_line] formatted_code_for(source_code, start_on_line, indent) end