# File lib/text/format.rb, line 946
946:     def initialize(arg = nil, &block)
947:       case arg
948:       when Text::Format
949:         __create(arg.text) do
950:           @columns        = arg.columns
951:           @tabstop        = arg.tabstop
952:           @first_indent   = arg.first_indent
953:           @body_indent    = arg.body_indent
954:           @format_style   = arg.format_style
955:           @left_margin    = arg.left_margin
956:           @right_margin   = arg.right_margin
957:           @extra_space    = arg.extra_space
958:           @tag_paragraph  = arg.tag_paragraph
959:           @tag_text       = arg.tag_text
960:           @abbreviations  = arg.abbreviations
961:           @nobreak        = arg.nobreak
962:           @nobreak_regex  = arg.nobreak_regex
963:           @text           = arg.text
964:           @hard_margins   = arg.hard_margins
965:           @split_words    = arg.split_words
966:           @split_rules    = arg.split_rules
967:           @hyphenator     = arg.hyphenator
968:         end
969:         instance_eval(&block) unless block.nil?
970:       when Hash
971:         __create do
972:           @columns       = arg[:columns]       || arg['columns']       || @columns
973:           @tabstop       = arg[:tabstop]       || arg['tabstop']       || @tabstop
974:           @first_indent  = arg[:first_indent]  || arg['first_indent']  || @first_indent
975:           @body_indent   = arg[:body_indent]   || arg['body_indent']   || @body_indent
976:           @format_style  = arg[:format_style]  || arg['format_style']  || @format_style
977:           @left_margin   = arg[:left_margin]   || arg['left_margin']   || @left_margin
978:           @right_margin  = arg[:right_margin]  || arg['right_margin']  || @right_margin
979:           @extra_space   = arg[:extra_space]   || arg['extra_space']   || @extra_space
980:           @text          = arg[:text]          || arg['text']          || @text
981:           @tag_paragraph = arg[:tag_paragraph] || arg['tag_paragraph'] || @tag_paragraph
982:           @tag_text      = arg[:tag_text]      || arg['tag_text']      || @tag_text
983:           @abbreviations = arg[:abbreviations] || arg['abbreviations'] || @abbreviations
984:           @nobreak       = arg[:nobreak]       || arg['nobreak']       || @nobreak
985:           @nobreak_regex = arg[:nobreak_regex] || arg['nobreak_regex'] || @nobreak_regex
986:           @hard_margins  = arg[:hard_margins]  || arg['hard_margins']  || @hard_margins
987:           @split_rules   = arg[:split_rules] || arg['split_rules'] || @split_rules
988:           @hyphenator    = arg[:hyphenator] || arg['hyphenator'] || @hyphenator
989:         end
990:         instance_eval(&block) unless block.nil?
991:       when String
992:         __create(arg, &block)
993:       when NilClass
994:         __create(&block)
995:       else
996:         raise TypeError
997:       end
998:     end