# File lib/base64.rb, line 72 def decode_b(str) str.gsub!(/=\?ISO-2022-JP\?B\?([!->@-~]+)\?=/i) { decode64($1) } str = Kconv::toeuc(str) str.gsub!(/=\?SHIFT_JIS\?B\?([!->@-~]+)\?=/i) { decode64($1) } str = Kconv::toeuc(str) str.gsub!(/\n/, ' ') str.gsub!(/\0/, '') str end