From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.help Subject: Re: Reading huge files Date: Wed, 10 Jan 2007 23:30:23 -0700 Message-ID: References: <8642ba650701081417n3c658d33v6dbf743a9bd30c7c@mail.gmail.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1168497052 21629 80.91.229.12 (11 Jan 2007 06:30:52 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 11 Jan 2007 06:30:52 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Jan 11 07:30:50 2007 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1H4tSZ-0006gs-Qo for geh-help-gnu-emacs@m.gmane.org; Thu, 11 Jan 2007 07:30:48 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1H4tSZ-0000Rp-Jp for geh-help-gnu-emacs@m.gmane.org; Thu, 11 Jan 2007 01:30:47 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1H4tSN-0000QU-E1 for help-gnu-emacs@gnu.org; Thu, 11 Jan 2007 01:30:35 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1H4tSM-0000Ox-Lf for help-gnu-emacs@gnu.org; Thu, 11 Jan 2007 01:30:34 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1H4tSM-0000Oe-Fp for help-gnu-emacs@gnu.org; Thu, 11 Jan 2007 01:30:34 -0500 Original-Received: from [80.91.229.2] (helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA:32) (Exim 4.52) id 1H4tSM-00080I-3j for help-gnu-emacs@gnu.org; Thu, 11 Jan 2007 01:30:34 -0500 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1H4tSI-00021s-I1 for help-gnu-emacs@gnu.org; Thu, 11 Jan 2007 07:30:30 +0100 Original-Received: from c-24-9-156-178.hsd1.co.comcast.net ([24.9.156.178]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 11 Jan 2007 07:30:30 +0100 Original-Received: from kevin.d.rodgers by c-24-9-156-178.hsd1.co.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 11 Jan 2007 07:30:30 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-To: help-gnu-emacs@gnu.org Original-Lines: 28 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: c-24-9-156-178.hsd1.co.comcast.net User-Agent: Thunderbird 1.5.0.9 (Macintosh/20061207) In-Reply-To: X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:40226 Archived-At: Eli Zaretskii wrote: >> From: Kevin Rodgers >> Date: Tue, 09 Jan 2007 08:24:52 -0700 >> >> (defun view-large-file-contents (file beg end) >> "View FILE contents from bytes BEG through END, in View mode." >> (interactive "fView file: \nnFrom byte: \nnTo byte: ") >> (switch-to-buffer >> (generate-new-buffer (format "%s[%d,%d]" >> (file-name-nondirectory file) beg end))) >> (insert-file-contents file nil beg end) >> (view-mode 1)) > > Does this really work? I think it won't: the underlying problem is > that for large files, END overflows the limits of the ELisp integer > type, and your suggestion doesn't resolve this fundamental problem. > So insert-file-contents will still barf with large files. > > Or am I missing something? No, you are far wiser in the ways of the buddha. Why does insert-file-contents signal an error if you pass floating point values for BEG and END? -- Kevin Rodgers Denver, Colorado, USA