Issue 258740043: Table Of Contents crash with negative first-page-number (Closed)
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Created:
8 years, 10 months ago by thomasmorley651 Modified:
8 years, 4 months ago Reviewers:
dak CC:
lilypond-devel_gnu.org Visibility:
Public. |
DescriptionTable Of Contents crash with negative first-page-number
Issue 4494
Let \with-link point to the physical page-number
Patch Set 1 #
Total comments: 2
Patch Set 2 : Davids comments #Patch Set 3 : better coding #Patch Set 4 : oversight #Patch Set 5 : David's second thoughts #Patch Set 6 : Deal with non-existing labels #MessagesTotal messages: 13
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https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.scm File scm/define-markup-commands.scm (right): https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.sc... scm/define-markup-commands.scm:542: (+ table-page-number (+ 1 (* -1 first-page-number)))) Uh, (- table-page-number (1- first-page-number)) ? Do the links actually work when first-page-number is, say, 10? If so, did they not work before? https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.sc... scm/define-markup-commands.scm:548: (ly:stencil-add What's the reason for delaying this part of the stencil expression as well?
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Davids comments
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On 2015/07/12 17:01:06, dak wrote: > https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.scm > File scm/define-markup-commands.scm (right): > > https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.sc... > scm/define-markup-commands.scm:542: (+ table-page-number (+ 1 (* -1 > first-page-number)))) > Uh, (- table-page-number (1- first-page-number)) ? done > > Do the links actually work when first-page-number is, say, 10? yes > If so, did they > not work before? No, it was broken. > > https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.sc... > scm/define-markup-commands.scm:548: (ly:stencil-add > What's the reason for delaying this part of the stencil expression as well? No reason, corrected.
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On 2015/07/12 17:49:44, thomasmorley651 wrote: > > Do the links actually work when first-page-number is, say, 10? > > yes > > > If so, did they > > not work before? > > No, it was broken. Well, then we probably have to thank Ghostscript for bringing this long-standing problem to our attention. It may be worth trying if this makes the rather awkward fix for issue 3388 unnecessary, but I would guess that the problem is likely sufficiently different that that fix is still needed.
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On 2015/07/12 18:09:03, dak wrote: > On 2015/07/12 17:49:44, thomasmorley651 wrote: > > > > Do the links actually work when first-page-number is, say, 10? > > > > yes > > > > > If so, did they > > > not work before? > > > > No, it was broken. > > Well, then we probably have to thank Ghostscript for bringing this long-standing > problem to our attention. As far as I can tell other first-page-numbers than 1 are leading to wrong links right from the initial implementation of \with-link. Rereading the discussion http://lilypond.1069038.n5.nabble.com/PDF-hyperlinks-td93369.html and regarding the commit Author: Reinhold Kainhofer <reinhold@kainhofer.com> 2011-04-12 12:16:59 Committer: Reinhold Kainhofer <reinhold@kainhofer.com> 2011-04-15 15:49:25 Parent: 9f651e1f5143787aeda825a4061f82eede4943a3 (Doc: addition to MIDI and repeats by Tom Cloyd.) Child: 98b9439fda0b019a67cfe63b0c0c5bb99ded618e (Fix TOC: don't add links to non-existing labels in the .ps file) Branches: dev/toc-crash-with-link, master and many more (42) Follows: release/2.13.59-1 Precedes: release/2.13.60-1 Add feature to link to a particular page or a page containing a given label The main part of this patch was done by Dan Eble and posted to the lilypond-devel mailinglist on December 27, 2010. Like \with-url, this works only with the PDF backend. -) Add markup functions \with-link (links to the page containing the given label) and \page-link (links to the given page number) -) Internally, they are handled like the \with-url markup function, creating a pdfmark in the .ps file that creates the link in the PDF file. -) Add links to the pages for all TOC entries. I'd say it was never considered > It may be worth trying if this makes the rather awkward fix for issue 3388 > unnecessary, but I would guess that the problem is likely sufficiently different > that that fix is still needed. As far as I can tell my patch will not cure issue 3388. Though, I don't fully understand 3388. Maybe better to recheck yourself. The only other somehow related thing I've found is: Author: Reinhold Kainhofer <reinhold@kainhofer.com> 2011-04-12 12:16:59 Committer: Reinhold Kainhofer <reinhold@kainhofer.com> 2011-04-15 15:49:25 Parent: 9f651e1f5143787aeda825a4061f82eede4943a3 (Doc: addition to MIDI and repeats by Tom Cloyd.) Child: 98b9439fda0b019a67cfe63b0c0c5bb99ded618e (Fix TOC: don't add links to non-existing labels in the .ps file) Branches: dev/toc-crash-with-link, master and many more (42) Follows: release/2.13.59-1 Precedes: release/2.13.60-1 Add feature to link to a particular page or a page containing a given label The main part of this patch was done by Dan Eble and posted to the lilypond-devel mailinglist on December 27, 2010. Like \with-url, this works only with the PDF backend. -) Add markup functions \with-link (links to the page containing the given label) and \page-link (links to the given page number) -) Internally, they are handled like the \with-url markup function, creating a pdfmark in the .ps file that creates the link in the PDF file. -) Add links to the pages for all TOC entries.
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On 2015/07/12 20:58:41, thomasmorley651 wrote: > On 2015/07/12 18:09:03, dak wrote: > > > It may be worth trying if this makes the rather awkward fix for issue 3388 > > unnecessary, but I would guess that the problem is likely sufficiently > different > > that that fix is still needed. > > As far as I can tell my patch will not cure issue 3388. > Though, I don't fully understand 3388. Maybe better to recheck yourself. > > The only other somehow related thing I've found is: > C/P-error should read: Author: Reinhold Kainhofer <reinhold@kainhofer.com> 2011-04-15 18:31:17 Committer: Reinhold Kainhofer <reinhold@kainhofer.com> 2011-04-15 18:31:17 Parent: 3d571d9c80b7855422c96ecc6966bcbfa4dfb9ff (Add feature to link to a particular page or a page containing a given label) Child: 7703d5ed1ce797d92449a6a79ce593e6e5601396 (Fix problem with multiple markups on chord glissandos.) Branches: dev/toc-crash-with-link, master and many more (42) Follows: release/2.13.59-1 Precedes: release/2.13.60-1 Fix TOC: don't add links to non-existing labels in the .ps file
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better coding
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oversight
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On 2015/07/12 17:49:44, thomasmorley651 wrote: > On 2015/07/12 17:01:06, dak wrote: > > https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.scm > > File scm/define-markup-commands.scm (right): > > > > > https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.sc... > > scm/define-markup-commands.scm:542: (+ table-page-number (+ 1 (* -1 > > first-page-number)))) > > Uh, (- table-page-number (1- first-page-number)) ? > > done Now I get second thoughts. The problem is that I actually have no clue how this calculation comes about. Is it because logical pages are counted from 1? If so, this likely should rather be (1+ (- table-page-number first-page-number)) instead. Basically, the calculation should reflect the underlying logic. Whatever that may be.
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David's second thoughts
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On 2015/07/12 23:39:52, dak wrote: > On 2015/07/12 17:49:44, thomasmorley651 wrote: > > On 2015/07/12 17:01:06, dak wrote: > > > > https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.scm > > > File scm/define-markup-commands.scm (right): > > > > > > > > > https://codereview.appspot.com/258740043/diff/1/scm/define-markup-commands.sc... > > > scm/define-markup-commands.scm:542: (+ table-page-number (+ 1 (* -1 > > > first-page-number)))) > > > Uh, (- table-page-number (1- first-page-number)) ? > > > > done > > Now I get second thoughts. The problem is that I actually have no clue how this > calculation comes about. Is it because logical pages are counted from 1? If you mean that the pdf's first page is always page 1 of the document (whatever page-number is printed actually), then yes. > If so, this likely should rather be (1+ (- table-page-number first-page-number)) > instead. Basically, the calculation should reflect the underlying logic. > Whatever that may be. Changed to your proposal.
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