Re: Bug: Export to Latex - Incorrect output for list items starting with left bracket [8.2.3c (8.2.3c-elpa @ /Users/jdegenhardt/.emacs.d/elpa/org-20131115/)]

[Nicolas Goaziou <n.goaziou@gmail.com>]

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Hello,

Jon Degenhardt <jondegenhardt@yahoo.com> writes:

> Export to Latex (org-latex-export-to-pdf) generates incorrect latex when
> list items start with a left square bracket. This occurs because the
> \item command interprets the left square bracket as the start of an
> argument list. An example:
>
>    An item list:
>    - abc def
>    - [def] ghi
>    - [jkl m n o]
>    - pqr
>
> This produces the latex fragment:
>
>    An item list:
>    \begin{itemize}
>    \item abc def
>    \item [def] ghi
>    \item [jkl m n o]
>    \item pqr
>    \end{itemize}
>
> The pdf output renders the second and third items incorrectly. If there
> is no right bracket to terminate the argument, then pdf generation may
> fail with message:
>   
>    org-latex-compile: PDF file ./example.pdf wasn't produced: Runaway
> argument

Thank you for the report. Would the following patch solves the problem?


Regards,

-- 
Nicolas Goaziou

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From 64a5290bd6b7b8d29e9b77ecc3fe7c29619e37e0 Mon Sep 17 00:00:00 2001
From: Nicolas Goaziou <n.goaziou@gmail.com>
Date: Mon, 13 Jan 2014 17:48:19 +0100
Subject: [PATCH] ox-latex: Fix items starting with a square bracket

* lisp/ox-latex.el (org-latex-headline, org-latex-item): Fix items
  starting with a square bracket

Thanks to Jon Degenhardt for reporting it.
---
 lisp/ox-latex.el | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/lisp/ox-latex.el b/lisp/ox-latex.el
index 8294938..f695dfc 100644
--- a/lisp/ox-latex.el
+++ b/lisp/ox-latex.el
@@ -1374,7 +1374,12 @@ holding contextual information."
 		  (when (org-export-first-sibling-p headline info)
 		    (format "\\begin{%s}\n" (if numberedp 'enumerate 'itemize)))
 		  ;; Itemize headline
-		  "\\item " full-text "\n" headline-label pre-blanks contents)))
+		  "\\item "
+		  (replace-regexp-in-string "\\`[ \t]*\\[" "{\\[}" full-text)
+		  "\n"
+		  headline-label
+		  pre-blanks
+		  contents)))
 	    ;; If headline is not the last sibling simply return
 	    ;; LOW-LEVEL-BODY.  Otherwise, also close the list, before
 	    ;; any blank line.
@@ -1565,7 +1570,12 @@ contextual information."
 				 (concat checkbox
 					 (org-export-data tag info)))))))
     (concat counter "\\item" (or tag (concat " " checkbox))
-	    (and contents (org-trim contents))
+	    (cond ((not contents) nil)
+		  ((or tag
+		       checkbox
+		       (not (string-match "\\`[ \t]*\\[" contents)))
+		   (org-trim contents))
+		  (t (replace-match "{[}" nil nil contents)))
 	    ;; If there are footnotes references in tag, be sure to
 	    ;; add their definition at the end of the item.  This
 	    ;; workaround is necessary since "\footnote{}" command is
-- 
1.8.5.2