escaping of #+TEXT lines: \vspace vs \vspace*

escaping of #+TEXT lines: \vspace vs \vspace*

[Eric Abrahamsen]

Hi,

In a certain org file I put this line into the export options:

#+begin_src org-mode
#+TEXT: \vspace*{0.5in}
#+end_src

The starred version is necessary, obviously, since this comes before any
text, and LaTeX will ignore a plain old \vspace{} in those cases.

This currently gets escaped as \vspace*\{0.5in\}, which keeps it from
working. I noticed that regular \vspace{} is not escaped, so I went
looking in org-latex.el, but can't begin to figure out which regexp in
which function is protecting the unstarred version, but not the starred
version.

Is this fixable?

Thanks!
Eric

Re: escaping of #+TEXT lines: \vspace vs \vspace*

[Eric S Fraga]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> Hi,
>
> In a certain org file I put this line into the export options:
>
> #+begin_src org-mode
> #+TEXT: \vspace*{0.5in}
> #+end_src

Should this not be 

#+LATEX: \vspace*{0.5in}

instead of TEXT?

By the way, if you want such commands to be recognised inline within
normal org text, without having to escape them, I do the following:

#+latex_header: \newcommand{\Gap}[1]{\vspace*{#1}}

and then simply type \Gap{0.5in} whenever you want to invoke this vspace
command.  One could argue that the latex escaping that org does should
include *'ed commands as well... but this may have other repercussions
that I am not aware of.

-- 
: Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 24.0.50.1
: using Org-mode version 7.5 (release_7.5.97.g078c0)

[PATCH] Protect starred commands in LaTeX export correctly

[Lawrence Mitchell]

* lisp/org-latex.el (org-export-latex-preprocess): Correctly
match starred command names.

Many LaTeX commands exist in both normal and starred forms.  Adjust
the regexp in `org-export-latex-preprocess' to match the starred form
as well.
---
 lisp/org-latex.el |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
Eric S Fraga wrote:

> Eric Abrahamsen <eric@ericabrahamsen.net> writes:

>> Hi,

>> In a certain org file I put this line into the export options:

>> #+begin_src org-mode
>> #+TEXT: \vspace*{0.5in}
>> #+end_src

> Should this not be


> #+LATEX: \vspace*{0.5in}

> instead of TEXT?


[...]

> One could argue that the latex escaping that org does should
> include *'ed commands as well... but this may have other repercussions
> that I am not aware of.

Indeed it probably should, here's a patch that does exactly that,
avoiding the need for the above workaround.  With this change
\vspace*{1cm} is correctly exported like \vspace{1cm}.

diff --git a/lisp/org-latex.el b/lisp/org-latex.el
index 2acc169..912ebba 100644
--- a/lisp/org-latex.el
+++ b/lisp/org-latex.el
@@ -2364,7 +2364,7 @@ The conversion is made depending of STRING-BEFORE and STRING-AFTER."
   ;; Protect LaTeX commands like \command[...]{...} or \command{...}
   (goto-char (point-min))
   (let ((re (concat
-	     "\\\\\\([a-zA-Z]+\\)"
+	     "\\\\\\([a-zA-Z]+\\*?\\)"
 	     "\\(?:<[^<>\n]*>\\)*"
 	     "\\(?:\\[[^][\n]*?\\]\\)*"
 	     "\\(?:<[^<>\n]*>\\)*"
-- 
1.7.4.rc2.18.gb20e9

Re: [PATCH] Protect starred commands in LaTeX export correctly

[Eric Abrahamsen]

Lawrence Mitchell <wence@gmx.li> writes:

> * lisp/org-latex.el (org-export-latex-preprocess): Correctly
> match starred command names.
>
> Many LaTeX commands exist in both normal and starred forms.  Adjust
> the regexp in `org-export-latex-preprocess' to match the starred form
> as well.

Awesome! This seems like a good idea. Though the other Eric's suggestion
just to use #+LATEX of course worked perfectly, I'm not sure why I
thought I needed #+TEXT in order to place the text before the first
headline…

Eric

[Accepted] Protect starred commands in LaTeX export correctly

[Bastien Guerry]

Patch 712 (http://patchwork.newartisans.com/patch/712/) is now "Accepted".

Maintainer comment: none

This relates to the following submission:

http://mid.gmane.org/%3Cm3zkom15w6.fsf_-_%40e4300lm.epcc.ed.ac.uk%3E

Here is the original message containing the patch:

> Content-Type: text/plain; charset="utf-8"
> MIME-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Subject: [O] Protect starred commands in LaTeX export correctly
> Date: Wed, 23 Mar 2011 15:28:04 -0000
> From: Lawrence Mitchell <wence@gmx.li>
> X-Patchwork-Id: 712
> Message-Id: <m3zkom15w6.fsf_-_@e4300lm.epcc.ed.ac.uk>
> To: emacs-orgmode@gnu.org
> 
> * lisp/org-latex.el (org-export-latex-preprocess): Correctly
> match starred command names.
> 
> Many LaTeX commands exist in both normal and starred forms.  Adjust
> the regexp in `org-export-latex-preprocess' to match the starred form
> as well.
> 
> ---
> lisp/org-latex.el |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> Eric S Fraga wrote:
> 
> > Eric Abrahamsen <eric@ericabrahamsen.net> writes:
> 
> >> Hi,
> 
> >> In a certain org file I put this line into the export options:
> 
> >> #+begin_src org-mode
> >> #+TEXT: \vspace*{0.5in}
> >> #+end_src
> 
> > Should this not be
> 
> 
> > #+LATEX: \vspace*{0.5in}
> 
> > instead of TEXT?
> 
> 
> [...]
> 
> > One could argue that the latex escaping that org does should
> > include *'ed commands as well... but this may have other repercussions
> > that I am not aware of.
> 
> Indeed it probably should, here's a patch that does exactly that,
> avoiding the need for the above workaround.  With this change
> \vspace*{1cm} is correctly exported like \vspace{1cm}.
> 
> diff --git a/lisp/org-latex.el b/lisp/org-latex.el
> index 2acc169..912ebba 100644
> --- a/lisp/org-latex.el
> +++ b/lisp/org-latex.el
> @@ -2364,7 +2364,7 @@ The conversion is made depending of STRING-BEFORE and STRING-AFTER."
>    ;; Protect LaTeX commands like \command[...]{...} or \command{...}
>    (goto-char (point-min))
>    (let ((re (concat
> -	     "\\\\\\([a-zA-Z]+\\)"
> +	     "\\\\\\([a-zA-Z]+\\*?\\)"
>  	     "\\(?:<[^<>\n]*>\\)*"
>  	     "\\(?:\\[[^][\n]*?\\]\\)*"
>  	     "\\(?:<[^<>\n]*>\\)*"
> 

Re: [PATCH] Protect starred commands in LaTeX export correctly

[Eric S Fraga]

Lawrence Mitchell <wence@gmx.li> writes:

> * lisp/org-latex.el (org-export-latex-preprocess): Correctly
> match starred command names.

Brilliant!  Thanks.
-- 
: Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 24.0.50.1
: using Org-mode version 7.5 (release_7.5.99.gac6e4.dirty)

Re: [PATCH] Protect starred commands in LaTeX export correctly

[Bastien]

Hi Lawrence,

Lawrence Mitchell <wence@gmx.li> writes:

> * lisp/org-latex.el (org-export-latex-preprocess): Correctly
> match starred command names.

Great -- thanks for this simple and clear patch!  I've now applied it.

-- 
 Bastien