The file has CRLF and LF terminators but the wiki says to use unix EOLN. ~/Development/x265/source/common/x86>file intrapred8_allangs.asm intrapred8_allangs.asm: ASCII text, with CRLF, LF line terminators I have all_angs_pred_4x4 ready but diff is generating a patch that covers the whole file because of this difference.