From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Alain Schneble Newsgroups: gmane.emacs.devel Subject: Re: [PATCH] url: Wrap cookie headers in url-http--encode-string. Date: Fri, 9 Sep 2016 17:15:50 +0200 Message-ID: <86oa3xqf2x.fsf@realize.ch> References: <20160907153014.15752-1-toke@toke.dk> <87inu7k5z4.fsf@toke.dk> <83bmzzaawr.fsf@gnu.org> <877fank1oc.fsf@toke.dk> <87inu6iim8.fsf@toke.dk> <2563921f-d20d-753b-09eb-c8671bc5b6d6@yandex.ru> <87a8fiidso.fsf@toke.dk> <86sht9qfyh.fsf@realize.ch> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1473434199 10213 195.159.176.226 (9 Sep 2016 15:16:39 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 9 Sep 2016 15:16:39 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (windows-nt) Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Sep 09 17:16:35 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1biNXc-0001qv-Ho for ged-emacs-devel@m.gmane.org; Fri, 09 Sep 2016 17:16:32 +0200 Original-Received: from localhost ([::1]:58440 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1biNXZ-0000xR-Vx for ged-emacs-devel@m.gmane.org; Fri, 09 Sep 2016 11:16:30 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35062) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1biNXU-0000wX-9H for emacs-devel@gnu.org; Fri, 09 Sep 2016 11:16:25 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1biNXP-0003Tk-DZ for emacs-devel@gnu.org; Fri, 09 Sep 2016 11:16:24 -0400 Original-Received: from clientmail.realize.ch ([46.140.89.53]:3537) by eggs.gnu.org with smtp (Exim 4.71) (envelope-from ) id 1biNXP-0003TW-1u for emacs-devel@gnu.org; Fri, 09 Sep 2016 11:16:19 -0400 Original-Received: from rintintin.hq.realize.ch.lan.rit ([192.168.0.105]) by clientmail.realize.ch ; Fri, 9 Sep 2016 17:16:13 +0200 Original-Received: from MYNGB (192.168.66.65) by rintintin.hq.realize.ch.lan.rit (192.168.0.105) with Microsoft SMTP Server (TLS) id 15.0.516.32; Fri, 9 Sep 2016 17:15:51 +0200 In-Reply-To: (Stefan Monnier's message of "Fri, 09 Sep 2016 11:06:38 -0400") X-ClientProxiedBy: rintintin.hq.realize.ch.lan.rit (192.168.0.105) To rintintin.hq.realize.ch.lan.rit (192.168.0.105) X-detected-operating-system: by eggs.gnu.org: Windows NT kernel [generic] X-Received-From: 46.140.89.53 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:207314 Archived-At: Stefan Monnier writes: >> (string-bytes cookie-val) >> =3D> 131 > > This says that the internal representation of the cookie-val string uses > up 131 bytes. > >> (string-bytes (encode-coding-string "=E6=F8=E5" 'utf-8)) >> =3D> 6 > > Note that `length' should return the same value, since the string > returned by encode-coding-string should be unibyte (i.e. is a sequence of > bytes, rather than sequence of characters). > >> (string-bytes (concat (encode-coding-string "=E6=F8=E5" 'utf-8) cookie-v= al)) >> =3D> 143 ' why? > > Because the concatenation needs to convert the bytes held in the first > string into chars. The internal representation of bytes >=3D128 as chars > takes up 2 bytes. Your last sentence explains the behavior I did not understand. Thanks!