From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Vollmar Subject: Re: Links Lost and Export-Report Date: Wed, 18 Aug 2010 23:41:59 +0200 Message-ID: References: <1CAF6BB4-68B6-46C0-AE9A-11984B8DEC3A@nf.mpg.de> <871v9vdhku.fsf@norang.ca> <26232062-ECCC-484B-B59D-B1A9CB63FE70@nf.mpg.de> <87aaoj6dwe.fsf@gollum.intra.norang.ca> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1534305575==" Return-path: Received: from [140.186.70.92] (port=43335 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OlqPX-0007Wg-HM for emacs-orgmode@gnu.org; Wed, 18 Aug 2010 17:43:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OlqOY-0008Eu-Qw for emacs-orgmode@gnu.org; Wed, 18 Aug 2010 17:42:08 -0400 Received: from mail.nf.mpg.de ([134.107.209.50]:42290) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OlqOY-0008Ek-G2 for emacs-orgmode@gnu.org; Wed, 18 Aug 2010 17:42:02 -0400 Received: from [192.168.178.21] (p5df02807.dip.t-dialin.net [93.240.40.7]) by mail.nf.mpg.de (Sun Java(tm) System Messaging Server 6.3-8.03 (built Apr 24 2009; 32bit)) with ESMTPSA id <0L7D00E2LB3CBR00@mail.nf.mpg.de> for emacs-orgmode@gnu.org; Wed, 18 Aug 2010 23:45:12 +0200 (MEST) In-reply-to: <87aaoj6dwe.fsf@gollum.intra.norang.ca> List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: emacs-orgmode Mailinglist Cc: Bernt Hansen --===============1534305575== Content-type: multipart/signed; boundary=Apple-Mail-187-1065325475; protocol="application/pkcs7-signature"; micalg=sha1 --Apple-Mail-187-1065325475 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 Hello, many thanks to Bernt Hansen for finding the root of my problem.=20 Here is a recipe to unhappiness: Start with two files a.org and b.org which are part of some files you = have created with Org-mode in mind for efficently producing high quality = HTML content. Set up Org-mode to use ids for links; do an org-store-link = somewhere in file a.org, then an insert-store-link somewhere in file = b.org. Enjoy short-lived happiness that everything works after exporting = to HTML. Then: delete ~/.emacs.d/.org-id-locations This is a good way to simulate this common scenario: transfer your org = files to another system, by preference with a version control system so = you can be sure the files are identical on both systems and then = continue working on that computer; keep in mind: this is the default = state of affairs when working in a team! Also note that = .org-id-locations uses absolute path names, so syncing that file across = different user work stations will seldom work.=20 Now observe that after exporting to HTML *none* of your ID based links = work that refer to locations outside the originating org file. Moreover, = observe that Org-mode certainly must have noticed something did not work = and failed to mention it. org-id-update-id-locations will not help you, unless (a) you remember to = use it (preferably before you have already put HTML files with broken = links online; this goes for your co-workers, too!), (b) files a.org and = b.org happen to be agenda files or (c) happen to be mentioned in = "org-id-locations" (this I learned from "describe function: = org-id-update-id-locations"). None of the above is likely. Org-mode for HTML publishing is an excellent tool (for lots and lots of = other things, too, of course) and I think using globally unique ids is, = in general, a great idea. This is why I get a bit emotional about this = id link business (sorry). Here are some suggestions: - expand the use of ids, so that, in analogy to other links, the = inserted link can also contain a file name if it refers to another org = fileD, maybe like this:=20 file-id:some-file.org#8329AEF0-4885-486A-A1B6-BB82B3E92184 - if an id is unknown, search all files in the current publishing = project, using the same selection of org-files that will also be used = for project-based publishing - be verbose about links that could not be resolved, warn and = potentially stop processing at that file (and while at it, also complain = about unresolved macro definitions and finish with a summary line) - mention in the org-manual that using ids is not recommended for using = links between different files because they break so easily (this is = hardly an option, is it?) Let me emphasize that I am really generally a very happy org user and I = am quite willing to contribute (as far as I can) to a solution to what I = think is a problem with id-based links. Warm regards, Stefan On 18.08.2010, at 19:15, Bernt Hansen wrote: > Stefan Vollmar writes: >=20 >> [...] >>=20 >>> I think you need to look in the ~/.emacs.d/.org-id-locations file. = This >>> maps link ids to files. >>>=20 >>> -Bernt >>=20 >> I think it is very likely that this is part of problem - I = synchronize >> the directories containing my org-files and have, so far, done = nothing >> about "~/.emacs.d/.org-id-locations". >>=20 >> What is the best way to deal with this? >> - Synchronize? >> - Delete? >> - Force re-generation? >=20 > I think you can just regenerate the file with a call to >=20 > M-x org-id-update-id-locations >=20 >> I have just taken a look at that file. It seems to map one id to one >> file. How does that help Org-mode if I rename an org-file that >> contains an id? >=20 > This will probably make your ids and files out of sync so they don't > work for links in those files anymore. Regenerating the list for all = of > the files you have with id links should fix the problem. >=20 > I use the feature but don't rename my org files so I've never run into > this issue (if it is one). --=20 Dr. Stefan Vollmar, Dipl.-Phys. Head of IT group Max-Planck-Institut f=FCr neurologische Forschung Gleuelerstr. 50, 50931 K=F6ln, Germany Tel.: +49-221-4726-213 FAX +49-221-4726-298 Tel.: +49-221-478-5713 Mobile: 0160-93874279 Email: vollmar@nf.mpg.de http://www.nf.mpg.de --Apple-Mail-187-1065325475 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIOHTCCBCEw ggMJoAMCAQICAgDHMA0GCSqGSIb3DQEBBQUAMHExCzAJBgNVBAYTAkRFMRwwGgYDVQQKExNEZXV0 c2NoZSBUZWxla29tIEFHMR8wHQYDVQQLExZULVRlbGVTZWMgVHJ1c3QgQ2VudGVyMSMwIQYDVQQD ExpEZXV0c2NoZSBUZWxla29tIFJvb3QgQ0EgMjAeFw0wNjEyMTkxMDI5MDBaFw0xOTA2MzAyMzU5 MDBaMFoxCzAJBgNVBAYTAkRFMRMwEQYDVQQKEwpERk4tVmVyZWluMRAwDgYDVQQLEwdERk4tUEtJ MSQwIgYDVQQDExtERk4tVmVyZWluIFBDQSBHbG9iYWwgLSBHMDEwggEiMA0GCSqGSIb3DQEBAQUA A4IBDwAwggEKAoIBAQDpm8NnhfkNrvWNVMOWUDU9YuluTO2U1wBblSJ01CDrNI/W7MAxBAuZgeKm 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