Re: [PATCH] fontified source-code on latex export with listings package

[Carsten Dominik <carsten.dominik@gmail.com>]

I have added the patch, thanks!

Eric, color setup is relative complex, which i why I don't want
to discuss this in detail in the manual.  Maybe you could write
a Worg page about this, and/or a FAQ entry?

- Carsten

On Aug 8, 2009, at 8:59 PM, Eric Schulte wrote:

> Hi,
>
> The attached patch allows for fontified source code blocks on export  
> to
> LaTeX.  It does this using the 'listings' latex package.  A new  
> variable
> is introduced; `org-export-latex-listings' which should be set to
> non-nil for source-code to be exported as listings blocks.  This
> variable defaults to nil in which case the current practice of  
> exporting
> source code to verbatim latex blocks remains unchanged.
>
> To use this functionality add the following to your org-mode config.
>
> --8<---------------cut here---------------start------------->8---
>  ;; tell org to use listings
>  (setq org-export-latex-listings t)
>
>  ;; you must include the listings package
>  (add-to-list 'org-export-latex-packages-alist '("" "listings"))
>
>  ;; if you want colored source code then you need to include the  
> color package
>  (add-to-list 'org-export-latex-packages-alist '("" "color"))
> --8<---------------cut here---------------end--------------->8---
>
> In addition to the patch, I'm attaching an example org-mode file,  
> along
> with the generated LaTeX file and PDF file.
>
> Do you think this would be appropriate for inclusion into org-mode?
>
> Thanks -- Eric
>
> diff --git a/lisp/org-exp.el b/lisp/org-exp.el
> index 00fd6c8..9de5e5f 100644
> --- a/lisp/org-exp.el
> +++ b/lisp/org-exp.el
> @@ -2204,6 +2204,8 @@ in the list) and remove property and value  
> from the list in LISTVAR."
> (defvar htmlp)  ;; dynamically scoped
> (defvar latexp)  ;; dynamically scoped
> (defvar org-export-latex-verbatim-wrap) ;; defined in org-latex.el
> +(defvar org-export-latex-listings) ;; defined in org-latex.el
> +(defvar org-export-latex-listings-langs) ;; defined in org-latex.el
>
> (defun org-export-format-source-code-or-example
>   (backend lang code &optional opts indent)
> @@ -2310,8 +2312,20 @@ INDENT was the original indentation of the  
> block."
> 	     ((eq backend 'latex)
> 	      (setq rtn (org-export-number-lines rtn 'latex 0 0 num cont  
> rpllbl fmt))
> 	      (concat "\n#+BEGIN_LaTeX\n"
> -		      (org-add-props (concat (car org-export-latex-verbatim-wrap)
> -					     rtn (cdr org-export-latex-verbatim-wrap))
> +		      (org-add-props
> +                          (if org-export-latex-listings
> +                              (concat
> +                               (if lang
> +                                   (let* ((lang-sym (intern (concat  
> ":" lang)))
> +                                          (lstlang (or (plist-get  
> org-export-latex-listings-langs
> +                                                                   
> lang-sym)
> +                                                       lang)))
> +                                     (format "\\lstset{language=%s} 
> \n" lstlang))
> +                                 "")
> +                               "\\begin{lstlisting}\n"
> +                               rtn "\\end{lstlisting}\n")
> +                            (concat (car org-export-latex-verbatim- 
> wrap)
> +                                    rtn (cdr org-export-latex- 
> verbatim-wrap)))
> 			  '(org-protected t))
> 		      "#+END_LaTeX\n\n"))
> 	     ((eq backend 'ascii)
> diff --git a/lisp/org-latex.el b/lisp/org-latex.el
> index fdf9ae2..f80e221 100644
> --- a/lisp/org-latex.el
> +++ b/lisp/org-latex.el
> @@ -69,6 +69,9 @@
> 	  org-deadline-string "\\|"
> 	  org-closed-string"\\)")
>   "Regexp matching special time planning keywords plus the time  
> after it.")
> +(defvar org-export-latex-listings nil
> +  "If non-nil then source code blocks will be fontified using the
> +listings package.")
>
> (defvar latexp)    ; dynamically scoped from org.el
> (defvar re-quote)  ; dynamically scoped from org.el
> @@ -297,6 +300,12 @@ Defaults to \\begin{verbatim} and \ 
> \end{verbatim}."
>   :type '(cons (string :tag "Open")
> 	       (string :tag "Close")))
>
> +(defcustom org-export-latex-listings-langs
> +  '(:emacs-lisp "lisp")
> +  "Property list mapping languages to their listing language  
> counterpart."
> +  :group 'org-export-latex
> +  :type 'plist)
> +
> (defcustom org-export-latex-remove-from-headlines
>   '(:todo nil :priority nil :tags nil)
>   "A plist of keywords to remove from headlines. OBSOLETE.
> < 
> listngs 
> .org 
> > 
> < 
> listngs 
> .tex><listngs.pdf>_______________________________________________
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