Re: [PATCH] IMPORTANT: (possibly) incompatible Change

["Eric Schulte" <schulte.eric@gmail.com>]

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After updating to the current git head, I have to make the following
changes for latex image generation to work.


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diff --git a/lisp/org.el b/lisp/org.el
index dc45871..443f881 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -2936,7 +2936,7 @@ appears on the page."
 ;; when formatting latex fragments.  Originally it was part of the
 ;; LaTeX exporter, which is why the name includes "export".
 (defcustom org-export-latex-default-packages-alist
-  '(("AUTO" . "inputenc")
+  '(("" . "inputenc")
     ("T1"   . "fontenc")
     (""     . "graphicx")
     (""     . "longtable")
@@ -15247,9 +15247,9 @@ Some of the options can be changed using the variable
 		  (concat "\n"
 			  (mapconcat (lambda(p)
 				       (if (equal "" (car p))
-					   (format "\\usepackage{%s}" (cadr p))
+					   (format "\\usepackage{%s}" (cdr p))
 					 (format "\\usepackage[%s]{%s}"
-						 (car p) (cadr p))))
+						 (car p) (cdr p))))
 				     (append
 				      org-export-latex-default-packages-alist
 				      org-export-latex-packages-alist)

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The "AUTO" change is because the AUTO.def file is not present on my
fairly complete Ubuntu texlive latex install

: ERROR: LaTeX Error: File `AUTO.def' not found.

The other change is because `org-export-latex-default-packages-alist' is
now a simple cons cell rather than a list so cadr was throwing errors.

It seems to me these may be general problems, not just specific to my
setup.

Best -- Eric

Carsten Dominik <carsten.dominik@gmail.com> writes:

> Dear all,
>
> I have just checked in an important change - if you use LaTeX
> export, you need to be aware of it.
>
> 1. Org contains now a much better system for handling special entities
>    that are written like LaTeX macros, for example \therefore,
> \emptyset,
>    etc.  I will write more about this in the release notes for 6.35.
> But
>    already now thanks go to Ulf Stegemann without whom this would not
>    have happened.
>
> 2. I could no longer keep the old setup for LaTeX export in
>    org-export-latex-classes.  The disadvantage was that whenever you
>    needed to make changes to the header, you would fix the value of
> this
>    variable so that any changes I'd make in the future would not be
> visible
>    to you.
>
>    The way this is solved now is (excerpt from the upcoming release
> notes)
>
> -----------------------------------------------------------------------------
> * =org-export-latex-classes= no longer should be customized for packages
>
> The HEADER part of this variable should now only contain the
> documentclass macro, nothing else - at least normally.  All the
> package calls via usepackage should go into
> org-export-latex-packages-alist.  I moved all the default packages
> that into a new variable org-export-latex-default-packages-alist.
> This will allow me to add more packages (as needed) in the
> future, withour requiring you to erase and then redo your
> configuration of org-export-latex-classes.
>
> So if you have customized this variable, please remove once more
> (hopefully for the last time) your customization, so that it can
> revert to its now much simpler default value.  Put all your
> package definitions into org-export-latex-packages-alist.
> I hope this works, and we will not get conflicts because of the
> sequence in which packages are called.  If there are problems,
> please let me know so that we can find a solution.
> -----------------------------------------------------------------------------
>
> I have not yet put this onto the master branch, but I will soon.
> If you want to help testing this new setup, please check out the branch
> new-entity-support from the git repo and let me know if you run into any
> problems.
>
> Thanks!
>
> - Carsten (and Ulf)
>
>
>
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