Notepad++中Windows,Unix,Mac三种格式之间的转换 http://www.crifan.com/files/doc/docbook/rec_soft_npp/release/htmls/npp_func_windows_unix_mac.html
回车、换行符的来龙去脉(0x0D 0x0A CR LF \r \n) http://www.crifan.com/detailed_carriage_return_0x0d_0x0a_cr_lf__r__n_the_context