Bug: Line breaks in exported LaTeX code [7.8.11]

Bug: Line breaks in exported LaTeX code [7.8.11]

[Uffe Høgsbro Thygesen]

Greetings Orgs

When exporting an .org file to LaTeX, no line breaks are inserted into
the LaTeX source code. With default options from a fresh install, the
LaTeX code will not compile, because documentclass information appears
on the first line of the LaTeX source, which is a comment:

% Created 2012-06-08 Fri 12:58 \documentclass{article} [...]

As an experiment, I changed the the time stamp in org-latex.el from

      (format-time-string "%% Created %Y-%m-%d %a %H:%M\n"))

to

      (format-time-string "%% Created %Y-%m-%d %a %H:%M\r"))

and it appears that pdflatex recognizes this "\r" as a line break and hence
compiles. So the problem seems to be the way the "\n" is written (or not
written) to the LaTeX source file. Which is beyond me.

Test file:


--- file: test.org --------
#+TITLE:Test

Test
--- end file --------------


System and version information:
===============================

Ubuntu 12.04
Emacs  : GNU Emacs 23.3.1 (i686-pc-linux-gnu, GTK+ Version 2.24.10)
  of 2012-03-25 on roseapple, modified by Debian
Package: Org-mode version 7.8.11


current state:
==============
(setq
  org-export-latex-after-initial-vars-hook '(org-beamer-after-initial-vars)
  org-speed-command-hook '(org-speed-command-default-hook
               org-babel-speed-command-hook)
  org-babel-load-languages '((R . t) (latex . t) (ditaa . t))
  org-metaup-hook '(org-babel-load-in-session-maybe)
  org-after-todo-state-change-hook '(org-clock-out-if-current)
  org-babel-tangle-lang-exts '(("latex" . "tex") ("emacs-lisp" . "el"))
  org-export-latex-format-toc-function 'org-export-latex-format-toc-default
  org-tab-first-hook '(org-hide-block-toggle-maybe
               org-src-native-tab-command-maybe
               org-babel-hide-result-toggle-maybe)
  org-src-mode-hook '(org-src-babel-configure-edit-buffer
              org-src-mode-configure-edit-buffer)
  org-confirm-shell-link-function 'yes-or-no-p
  org-export-first-hook '(org-beamer-initialize-open-trackers)
  org-agenda-before-write-hook '(org-agenda-add-entry-text)
  org-babel-pre-tangle-hook '(save-buffer)
  org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
           org-cycle-show-empty-lines
           org-optimize-window-after-visibility-change)
  org-export-preprocess-before-normalizing-links-hook 
'(org-remove-file-link-modifiers)
  org-mode-hook '(#[nil "\300\301\302\303\304$\207"
            [org-add-hook change-major-mode-hook org-show-block-all
             append local]
            5]
          #[nil "\300\301\302\303\304$\207"
            [org-add-hook change-major-mode-hook
             org-babel-show-result-all append local]
            5]
          org-babel-result-hide-spec org-babel-hide-all-hashes)
  org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point
               org-babel-execute-safely-maybe)
  org-confirm-elisp-link-function 'yes-or-no-p
  org-export-interblocks '((src org-babel-exp-non-block-elements))
  org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
  org-occur-hook '(org-first-headline-recenter)
  org-from-is-user-regexp "\\<Uffe Høgsbro Thygesen\\>"
  org-export-preprocess-before-selecting-backend-code-hook 
'(org-beamer-select-beamer-code)
  org-confirm-babel-evaluate nil
  org-export-latex-final-hook '(org-beamer-amend-header org-beamer-fix-toc
                    org-beamer-auto-fragile-frames
                    org-beamer-place-default-actions-for-lists)
  org-metadown-hook '(org-babel-pop-to-session-maybe)
  org-export-blocks '((src org-babel-exp-src-block nil)
              (export-comment org-export-blocks-format-comment t)
              (ditaa org-export-blocks-format-ditaa nil)
              (dot org-export-blocks-format-dot nil))
  )

Re: Bug: Line breaks in exported LaTeX code [7.8.11]

[Eric S Fraga]

Uffe Høgsbro Thygesen <uht@aqua.dtu.dk> writes:

> Greetings Orgs
>
> When exporting an .org file to LaTeX, no line breaks are inserted into
> the LaTeX source code. With default options from a fresh install, the
> LaTeX code will not compile, because documentclass information appears
> on the first line of the LaTeX source, which is a comment:
>
> % Created 2012-06-08 Fri 12:58 \documentclass{article} [...]

This doesn't happen to me.  Have you tried with "emacs -Q" to ensure
that it's not something in your configuration?


-- 
: Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 24.1.50.1
: using Org release_7.8.11-69-ga2fd96

Re: Bug: Line breaks in exported LaTeX code [7.8.11]

[Uffe Høgsbro Thygesen]

Hi Eric

Thanks! No, I hadn't thought of that, silly me.

It turns out that the following line in my .emacs caused the problems:

(add-hook 'LaTeX-mode-hook 'longlines-mode)

So now I have commented that one out and the export works fine and has 
all the line breaks I had expected. I guess I will just enable longlines 
mode manually when editing LaTeX from now on.

Thanks again for the pointer!

Cheers

Uffe



On 06/13/2012 04:57 PM, Eric S Fraga wrote:
> Uffe Høgsbro Thygesen<uht@aqua.dtu.dk>  writes:
>
>> Greetings Orgs
>>
>> When exporting an .org file to LaTeX, no line breaks are inserted into
>> the LaTeX source code. With default options from a fresh install, the
>> LaTeX code will not compile, because documentclass information appears
>> on the first line of the LaTeX source, which is a comment:
>>
>> % Created 2012-06-08 Fri 12:58 \documentclass{article} [...]
> This doesn't happen to me.  Have you tried with "emacs -Q" to ensure
> that it's not something in your configuration?
>
>

Re: Bug: Line breaks in exported LaTeX code [7.8.11]

[Eric S Fraga]

Uffe Høgsbro Thygesen <uht@aqua.dtu.dk> writes:

> Hi Eric
>
> Thanks! No, I hadn't thought of that, silly me.
>
> It turns out that the following line in my .emacs caused the problems:
>
> (add-hook 'LaTeX-mode-hook 'longlines-mode)

Interesting.  I do not understand why longlines-mode should cause this
problem.  However, this mode has always had quirky behaviour.

You may wish to use visual-line-mode instead which works similar to
longlines-mode but better, IMO.

-- 
: Eric S Fraga, GnuPG: 0xC89193D8FFFCF67D
: in Emacs 24.1.50.1 and Org release_7.8.11-69-ga2fd96