From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Compiling Elisp to a native code with a GCC plugin Date: Fri, 17 Sep 2010 16:57:10 +0200 Organization: Organization?!? Message-ID: <8739t8bepl.fsf@lola.goethe.zz> References: <87bp805ecr.fsf@gmail.com> <87iq26z97e.fsf@uwakimon.sk.tsukuba.ac.jp> <87y6b0yi8o.fsf@uwakimon.sk.tsukuba.ac.jp> <87sk18bioh.fsf@lola.goethe.zz> <87fwx8bhkq.fsf@lola.goethe.zz> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1284735464 31584 80.91.229.12 (17 Sep 2010 14:57:44 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 17 Sep 2010 14:57:44 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Sep 17 16:57:43 2010 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1OwcNg-00016k-I5 for ged-emacs-devel@m.gmane.org; Fri, 17 Sep 2010 16:57:40 +0200 Original-Received: from localhost ([127.0.0.1]:42742 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OwcNg-0006Ht-1T for ged-emacs-devel@m.gmane.org; Fri, 17 Sep 2010 10:57:40 -0400 Original-Received: from [140.186.70.92] (port=44252 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OwcNY-0006HB-VJ for emacs-devel@gnu.org; Fri, 17 Sep 2010 10:57:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OwcNT-0000ec-5I for emacs-devel@gnu.org; Fri, 17 Sep 2010 10:57:31 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:60112) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OwcNS-0000eU-Vz for emacs-devel@gnu.org; Fri, 17 Sep 2010 10:57:27 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OwcNS-0000xD-4U for emacs-devel@gnu.org; Fri, 17 Sep 2010 16:57:26 +0200 Original-Received: from p508ea523.dip.t-dialin.net ([80.142.165.35]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 17 Sep 2010 16:57:25 +0200 Original-Received: from dak by p508ea523.dip.t-dialin.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 17 Sep 2010 16:57:25 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 29 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: p508ea523.dip.t-dialin.net X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) Cancel-Lock: sha1:UpsjBio/jU3OUsr//aWknChzExc= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:130313 Archived-At: Lars Magne Ingebrigtsen writes: > David Kastrup writes: > >> Fbuffer_substring also likely copies the multibyteness, not just the >> bytes. > > Yes, probably, but I don't know what that means. This: > if (! NILP (current_buffer->enable_multibyte_characters)) > result = make_uninit_multibyte_string (end - start, end_byte - start_byte); > else > result = make_uninit_string (end - start); > So no matter whether it creates a "multibyte string" or not (and I > don't know what the difference is), it still just does a memcpy from > the buffer representation over to the string representation. Sure. But when you compare you can be in the unfortunate situation that multibyteness _differs_. In this case, the byte patterns can be the same and the texts still different, and vice versa. -- David Kastrup