From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Merciadri Luca Newsgroups: gmane.emacs.help Subject: Re: Adding `#' at each new line with text until the end of the file Date: Thu, 20 May 2010 20:09:29 +0200 Organization: ULg Message-ID: <87vdaih2cm.fsf@merciadriluca-station.MERCIADRILUCA> References: <87k4r24iq3.fsf@merciadriluca-station.MERCIADRILUCA> <87bpcel6zj.fsf@kuiper.lan.informatimago.com> <878w7is2yy.fsf@merciadriluca-station.MERCIADRILUCA> <87zkzyjkcb.fsf@kuiper.lan.informatimago.com> <87aarx4j3i.fsf@merciadriluca-station.MERCIADRILUCA> <87mxvx2m2w.fsf@merciadriluca-station.MERCIADRILUCA> <87pr0tlzuz.fsf@kuiper.lan.informatimago.com> <87sk5neuwz.fsf@merciadriluca-station.MERCIADRILUCA> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1291833704 21452 80.91.229.12 (8 Dec 2010 18:41:44 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 8 Dec 2010 18:41:44 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Dec 08 19:41:38 2010 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 4.69) (envelope-from ) id 1PQOxO-0001mF-Mv for geh-help-gnu-emacs@m.gmane.org; Wed, 08 Dec 2010 19:41:38 +0100 Original-Received: from localhost ([127.0.0.1]:51752 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PQOxN-0000HC-Vl for geh-help-gnu-emacs@m.gmane.org; Wed, 08 Dec 2010 13:41:38 -0500 Original-Path: usenet.stanford.edu!goblin2!goblin.stu.neva.ru!weretis.net!feeder3.news.weretis.net!nuzba.szn.dk!news.szn.dk!pnx.dk!dotsrc.org!filter.dotsrc.org!news.dotsrc.org!not-for-mail Original-Newsgroups: gnu.emacs.help User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) Cancel-Lock: sha1:nsR8A/eaX0mZWYuzXk1X2sZdBXU= Original-Lines: 99 Original-NNTP-Posting-Host: 62.197.101.67 Original-X-Trace: news.sunsite.dk DXC=QJj07[>QkcN3j@n`X75YjCYSB=nbEKnkKfPSZB06Fl 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:75810 Archived-At: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 pjb@informatimago.com (Pascal J. Bourguignon) writes: > Merciadri Luca writes: > >> pjb@informatimago.com (Pascal J. Bourguignon) writes: >> >>> Merciadri Luca writes: >>> >>>> pjb@informatimago.com (Pascal J. Bourguignon) writes: >>>> >>>>>> Sure, but, as I explained in my previous message, it does not even >>>>>> modify the Sayings file. Why? >>>>> >>>>> Because you didn't instruct the program to modify the file. >>>>> Read the documentation of insert, for example. Does it mention files? >>>>> What does insert modify? >>>> Insert modifies the current buffer, according to the manual. Or >>>> find-file loads its arg into a buffer. So, if find-file loads its arg >>>> into the *current* buffer, insert should modify the current buffer, >>>> that is, `Sayings'. >>> >>> (list >>> (progn (find-file "/tmp/Sayings") >>> (buffer-name (current-buffer))) >>> (progn (find-file "/mnt/Sayings") >>> (buffer-name (current-buffer)))) >>> --> ("Sayings" "Sayings<2>") >>> >>> Here you have two files, named "/tmp/Sayings" and "/mnt/Sayings", and >>> when opening them at the same time, we get "Sayings" and "Sayings<2>" >>> as buffer names. >>> >>> Clearly, the buffer names are not entirely independant from the file >>> names, but it should be obvious from the example, that there's two >>> name spaces and two different kind of entities. A buffer named "X" is >>> not a file name "X". >>> >>> So to repeat what you wrote above: >>> >>> - find-file (or find-file-noselect) loads the contents of a _file_ >>> into a _buffer_. >>> >>> - insert modifies the contents of a _buffer_. >>> >>> When you do only these to action what happens to the _file_? >> Nothing, actually. That's the problem. > > Yes. That's because you haven't said something. What should you say > to have the file modified in any way? > > > Something like: > > - save the buffer to the file, keeping a backup of the old file. > > or, in emacs lisp: > > (save-buffer 1) > > Remember: Computers only do what you tell them to do! ;-) Yes. Thanks for your implication in this. I am now trying with == (defun fildi () (find-file "~/Sayings") ;(goto-char (point-min)) (while (< (point) (point-max)) (when (looking-at ".") (insert "#")) (forward-line)) (save-buffer 1) ) == which `should' do the trick, as the file is found, opened in the buffer, the buffer is modified as I want it to be, and the buffer is then saved. Why is it still erroneous? Thanks. - -- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ - -- A real friend is someone who walks in when the rest of the world walks out. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Processed by Mailcrypt 3.5.8 iEYEARECAAYFAkv1etkACgkQM0LLzLt8MhzstwCdG6pMCOXZSljbXxz6Snp5/c/N wK4Anj2S5SO1H5wExmyvS3lCUHpLfbeZ =Ck8d -----END PGP SIGNATURE-----