Re: [O] having problems exporting to Beamer

2013-04-14 Thread Nicolas Goaziou 
Hello,

Eric Schulte schulte.e...@gmail.com writes:

 When I attempt to export a .org file to Beamer (with C-c C-e l b after
 requiring ox-beamer) I get the following error [1].  From the info page
 (info (org)Beamer export) it looks like I shouldn't have to do any
 special buffer preparation.

 What am I doing wrong?

It looks like `org-beamer-outline-frame-options' is nil, but it must be
a string (possibly empty).


Regards,

-- 
Nicolas Goaziou

Re: [O] having problems exporting to Beamer

2013-04-14 Thread Eric Schulte 
Nicolas Goaziou n.goaz...@gmail.com writes:

 Hello,

 Eric Schulte schulte.e...@gmail.com writes:

 When I attempt to export a .org file to Beamer (with C-c C-e l b after
 requiring ox-beamer) I get the following error [1].  From the info page
 (info (org)Beamer export) it looks like I shouldn't have to do any
 special buffer preparation.

 What am I doing wrong?

 It looks like `org-beamer-outline-frame-options' is nil, but it must be
 a string (possibly empty).


Thanks, with this variable set to an empty string I am making it further
in the export process.  I would suggest that either the initial value of
this variable be set to an empty string, or a nil value should be
handled gracefully.

After fixing the above I reached a new error.  There was no beamer
class defined in my `org-latex-classes'.  The attached patch ensures
that when ox-beamer is loaded a beamer entry is added to
`org-latex-classes' if none already exists.

From 540bcddb50b746f4f2de910a199e4d13e8ddad11 Mon Sep 17 00:00:00 2001
From: Eric Schulte schulte.e...@gmail.com
Date: Sun, 14 Apr 2013 09:16:24 -0600
Subject: [PATCH 1/2] ensure a beamer entry exists in org-latex-classes

This ensures that whenever ox-beamer is required it is possible to
export to beamer.  Otherwise it is required to find the
org-latex-classes variable and add a beamer entry, something which is
not mentioned in the beamer page of the manual and will be confusing to
users just getting going with Beamer export.

* lisp/ox-beamer.el (assoc): Ensure a beamer entry exists in
  org-latex-classes.
---
 lisp/ox-beamer.el | 9 +
 1 file changed, 9 insertions(+)

diff --git a/lisp/ox-beamer.el b/lisp/ox-beamer.el
index 63dad5c..87458f0 100644
--- a/lisp/ox-beamer.el
+++ b/lisp/ox-beamer.el
@@ -126,6 +126,15 @@
   :group 'org-export
   :version 24.2)
 
+(unless (assoc beamer org-latex-classes)
+  (add-to-list 'org-latex-classes
+	   '(article \\documentclass[bigger]{beamer}
+		 (\\section{%s} . \\section*{%s})
+		 (\\subsection{%s} . \\subsection*{%s})
+		 (\\subsubsection{%s} . \\subsubsection*{%s})
+		 (\\paragraph{%s} . \\paragraph*{%s})
+		 (\\subparagraph{%s} . \\subparagraph*{%s}
+
 (defcustom org-beamer-frame-level 1
   The level at which headlines become frames.
 
-- 
1.8.2.1


I leave it to you to apply or not, but I think it makes things much
clearer for new users.  I think this patch is especially useful because
it is no longer required to place

  #+LaTeX_Class: beamer

at the top of the Org-mode file for beamer export.  At least the
beamer class and `org-latex-classes' should be mentioned in the beamer
section of the manual.

Additionally, I ran into another nil vs. empty string problem, which was
fixed by the second patch attached.

From ae7f4de7a04c9fac9fa36836370711cdb7f12fa7 Mon Sep 17 00:00:00 2001
From: Eric Schulte schulte.e...@gmail.com
Date: Sun, 14 Apr 2013 10:28:27 -0600
Subject: [PATCH 2/2] Ensure nil is not passed to regexp function

* lisp/ox-beamer.el (org-beamer--format-frame): If contents is nil, then
  replace it with an empty string.
---
 lisp/ox-beamer.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/ox-beamer.el b/lisp/ox-beamer.el
index 87458f0..d1cfbfd 100644
--- a/lisp/ox-beamer.el
+++ b/lisp/ox-beamer.el
@@ -513,7 +513,7 @@ used as a communication channel.
 	;; remove the first word from the contents in the PDF
 	;; output.
 	(if (not fragilep) contents
-	  (replace-regexp-in-string \\`\n* \\  contents))
+	  (replace-regexp-in-string \\`\n* \\  (or contents )))
 	\\end{frame})))
 
 (defun org-beamer--format-block (headline contents info)
-- 
1.8.2.1


Finally, I ran into a third and even more minor problem.  Illustrated by
the following example.

#+TITLE: Example Presentation
#+Options: ^:nil toc:nil

* Breeders Equation
\begin{equation*}
  R = h^{2}S
\end{equation*}

- R :: response
- h^{2} :: heritability
- S :: selective distance

When exported to a beamer presentation, what should be h squared is
instead exported as h^{2}.

Thanks,



 Regards,

-- 
Eric Schulte
http://cs.unm.edu/~eschulte

Re: [O] having problems exporting to Beamer

2013-04-14 Thread Nicolas Goaziou 
Eric Schulte schulte.e...@gmail.com writes:

 Thanks, with this variable set to an empty string I am making it further
 in the export process.  I would suggest that either the initial value of
 this variable be set to an empty string, or a nil value should be
 handled gracefully.

The default value for this variable is already the empty string.

 After fixing the above I reached a new error.  There was no beamer
 class defined in my `org-latex-classes'.  

This is already the case. You should update Org.

 Finally, I ran into a third and even more minor problem.  Illustrated by
 the following example.

 #+TITLE: Example Presentation
 #+Options: ^:nil toc:nil

 * Breeders Equation
 \begin{equation*}
   R = h^{2}S
 \end{equation*}

 - R :: response
 - h^{2} :: heritability
 - S :: selective distance

 When exported to a beamer presentation, what should be h squared is
 instead exported as h^{2}.

You explicitly tell the exporter to not export sub/superscript with
^:nil. Just set it to t.

Thanks for testing this.


Regards,

-- 
Nicolas Goaziou

Re: [O] having problems exporting to Beamer

2013-04-14 Thread Nicolas Goaziou 
Eric Schulte schulte.e...@gmail.com writes:

 Additionally, I ran into another nil vs. empty string problem, which was
 fixed by the second patch attached.

I had overlooked this one. I applied it. Thank you.


Regards,

-- 
Nicolas Goaziou

Re: [O] having problems exporting to Beamer

2013-04-14 Thread Eric Schulte 
 Finally, I ran into a third and even more minor problem.  Illustrated by
 the following example.

 #+TITLE: Example Presentation
 #+Options: ^:nil toc:nil

 * Breeders Equation
 \begin{equation*}
   R = h^{2}S
 \end{equation*}

 - R :: response
 - h^{2} :: heritability
 - S :: selective distance

 When exported to a beamer presentation, what should be h squared is
 instead exported as h^{2}.

 You explicitly tell the exporter to not export sub/superscript with
 ^:nil. Just set it to t.


Oh, this must be a bug in the old exporter which I grew to depend upon.
FWIW I always set ^:nil to t, so that I can use underscores w/o
exporting subscript words.  Previously even with ^:nil, superscripts
using curly braces would be exported as superscripts.  I guess I'll have
to find a new mode of operation with the new exporter.

Thanks,

-- 
Eric Schulte
http://cs.unm.edu/~eschulte

Re: [O] having problems exporting to Beamer

2013-04-14 Thread Nicolas Goaziou 
Eric Schulte schulte.e...@gmail.com writes:

 Oh, this must be a bug in the old exporter which I grew to depend upon.
 FWIW I always set ^:nil to t, so that I can use underscores w/o
 exporting subscript words.  Previously even with ^:nil, superscripts
 using curly braces would be exported as superscripts.  I guess I'll have
 to find a new mode of operation with the new exporter.

What about using:

  ^:{} 


Regards,

-- 
Nicolas Goaziou

Re: [O] having problems exporting to Beamer

2013-04-14 Thread Eric Schulte 
Nicolas Goaziou n.goaz...@gmail.com writes:

 Eric Schulte schulte.e...@gmail.com writes:

 Oh, this must be a bug in the old exporter which I grew to depend upon.
 FWIW I always set ^:nil to t, so that I can use underscores w/o
 exporting subscript words.  Previously even with ^:nil, superscripts
 using curly braces would be exported as superscripts.  I guess I'll have
 to find a new mode of operation with the new exporter.

 What about using:

   ^:{} 


Beautiful, Thanks.


 Regards,

-- 
Eric Schulte
http://cs.unm.edu/~eschulte

[O] having problems exporting to Beamer

2013-04-13 Thread Eric Schulte 
When I attempt to export a .org file to Beamer (with C-c C-e l b after
requiring ox-beamer) I get the following error [1].  From the info page
(info (org)Beamer export) it looks like I shouldn't have to do any
special buffer preparation.

What am I doing wrong?

Thanks,

Footnotes: 
[1]  
Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  string-match(\\S- nil)
  (not (string-match \\S- argument))
  (if (not (string-match \\S- argument))  (cond ((eql type (quote action)) 
(if (string-match \\`.*\\' argument) argument (format %s argument))) 
((eql type (quote defaction)) (cond ((string-match \\`\\[.*\\]\\' argument) 
argument) ((string-match \\`.*\\' argument) (format [%s] argument)) 
((string-match \\`\\[\\(.*\\)\\]\\' argument) (format [%s] (match-string 
1 argument))) (t (format [%s] argument ((eql type (quote option)) (if 
(string-match \\`\\[.*\\]\\' argument) argument (format [%s] argument))) (t 
argument)))
  org-beamer--normalize-argument(nil option)
  (format \\begin{frame}%s{%s}\n (org-beamer--normalize-argument 
org-beamer-outline-frame-options (quote option)) org-beamer-outline-frame-title)
  (concat (format \\begin{frame}%s{%s}\n (org-beamer--normalize-argument 
org-beamer-outline-frame-options (quote option)) 
org-beamer-outline-frame-title) (if (wholenump depth) (progn (format 
\\setcounter{tocdepth}{%d}\n depth))) \\tableofcontents\n 
\\end{frame}\n\n)
  (progn (concat (format \\begin{frame}%s{%s}\n 
(org-beamer--normalize-argument org-beamer-outline-frame-options (quote 
option)) org-beamer-outline-frame-title) (if (wholenump depth) (progn (format 
\\setcounter{tocdepth}{%d}\n depth))) \\tableofcontents\n 
\\end{frame}\n\n))
  (if depth (progn (concat (format \\begin{frame}%s{%s}\n 
(org-beamer--normalize-argument org-beamer-outline-frame-options (quote 
option)) org-beamer-outline-frame-title) (if (wholenump depth) (progn (format 
\\setcounter{tocdepth}{%d}\n depth))) \\tableofcontents\n 
\\end{frame}\n\n)))
  (let ((depth (plist-get info :with-toc))) (if depth (progn (concat (format 
\\begin{frame}%s{%s}\n (org-beamer--normalize-argument 
org-beamer-outline-frame-options (quote option)) 
org-beamer-outline-frame-title) (if (wholenump depth) (progn (format 
\\setcounter{tocdepth}{%d}\n depth))) \\tableofcontents\n 
\\end{frame}\n\n
  [...]
  (if async (let ((with-temp-message Initializing asynchronous export 
process) (current-message)) (unwind-protect (progn (if with-temp-message 
(progn (setq current-message (current-message)) (message %s 
with-temp-message))) (let ((--copy-fun (org-export--generate-copy-script ...)) 
(--temp-file (make-temp-file org-export-process)) (--coding 
buffer-file-coding-system)) (let ((temp-file --temp-file) (temp-buffer ...)) 
(unwind-protect (prog1 ... ...) (and ... ...))) (let* ((process-connection-type 
nil) (--proc-buffer ...) (--process ...)) (org-export-add-to-stack (get-buffer 
--proc-buffer) nil --process) (set-process-sentinel --process (let ... ...) 
(and with-temp-message (if current-message (message %s current-message) 
(message nil) (org-export-to-file (quote beamer) outfile subtreep 
visible-only body-only ext-plist))
  (let ((outfile (org-export-output-file-name .tex subtreep))) (if async (let 
((with-temp-message Initializing asynchronous export process) 
(current-message)) (unwind-protect (progn (if with-temp-message (progn (setq 
current-message ...) (message %s with-temp-message))) (let ((--copy-fun ...) 
(--temp-file ...) (--coding buffer-file-coding-system)) (let (... ...) 
(unwind-protect ... ...)) (let* (... ... ...) (org-export-add-to-stack ... nil 
--process) (set-process-sentinel --process ... (and with-temp-message (if 
current-message (message %s current-message) (message nil) 
(org-export-to-file (quote beamer) outfile subtreep visible-only body-only 
ext-plist)))
  org-beamer-export-to-latex(nil nil nil nil nil)
  (org-latex-compile (org-beamer-export-to-latex nil subtreep visible-only 
body-only ext-plist))
  (if async (let ((outfile (org-export-output-file-name .tex subtreep))) (let 
((with-temp-message Initializing asynchronous export process) 
(current-message)) (unwind-protect (progn (if with-temp-message (progn (setq 
current-message ...) (message %s with-temp-message))) (let ((--copy-fun ...) 
(--temp-file ...) (--coding buffer-file-coding-system)) (let (... ...) 
(unwind-protect ... ...)) (let* (... ... ...) (org-export-add-to-stack ... nil 
--process) (set-process-sentinel --process ... (and with-temp-message (if 
current-message (message %s current-message) (message nil)) 
(org-latex-compile (org-beamer-export-to-latex nil subtreep visible-only 
body-only ext-plist)))
  org-beamer-export-to-pdf(nil nil nil nil)
  org-export-dispatch(nil)
  call-interactively(org-export-dispatch nil nil)

-- 
Eric Schulte
http://cs.unm.edu/~eschulte