Re: [O] BUG: preview latex with split environment

[Varius Various]

Andreas Leha  writes:
>Nicolas Goaziou  writes:
>> Hello,
>>
>> Andreas Leha  writes:
>>
>>> I open this file:
>>>
>>> #+TITLE: Test amsmath's split
>>>
>>> * Some equation
>>> with some split expression, e.g.
>>> \begin{equation}
>>>   \begin{split}
>>> w \cdot x + b &= 1, \text{ and}\\
>>> w \cdot x + b &= -1
>>>   \end{split}
>>> \end{equation}
>>>
>>> To reproduce try to org-toggle-latex-fragment (C-c C-x C-l) on that
>>> latex expression.
>>
>> This should be fixed in master. Thank you for reporting it.
>>
>
>I can confirm this is fixed in my use case.
>
>Thank you very much!  That'll save me several LaTeX compilation cycles.

I have no problem with Andreas' example, but it fails in my case, where
"&" symbols are at the beginning of a line:

\begin{equation}
 \begin{split}
 (a - b) + c &= (a + (-b)) + c\\
  &= a + (-b + c)\\
  &= a + (c - b)\\
  &= (a + c) - b\text{.}
 \end{split}
\end{equation}

Re: [O] BUG: preview latex with split environment

[Varius Various]

Never mind, the problem was me trying to invoke
`org-preview-latex-fragment' somewhere inside the equation, but when I'm
doing it outside - it works.

Sorry about the noise.

Re: [O] BUG: preview latex with split environment

[Andreas Leha]

Hi Nicolas,

Nicolas Goaziou m...@nicolasgoaziou.fr writes:
 Hello,

 Andreas Leha andreas.l...@med.uni-goettingen.de writes:

 I open this file:

 #+TITLE: Test amsmath's split

 * Some equation
 with some split expression, e.g.
 \begin{equation}
   \begin{split}
 w \cdot x + b = 1, \text{ and}\\
 w \cdot x + b = -1
   \end{split}
 \end{equation}

 To reproduce try to org-toggle-latex-fragment (C-c C-x C-l) on that
 latex expression.

 This should be fixed in master. Thank you for reporting it.


I can confirm this is fixed in my use case.

Thank you very much!  That'll save me several LaTeX compilation cycles.

Andreas

Re: [O] BUG: preview latex with split environment

[Rasmus]

Andreas Leha andreas.l...@med.uni-goettingen.de writes:

 Hi all,

 I encounter a BUG with org-toggle-latex-fragment on an equation that
 uses amsmath's split environment.

 The problem is that the \begin{equation},\end{equation} get stripped of
 the temporary tex file.

I can't reproduce using your document from emacs -q.
(org-version) = 8.3beta updated today. 


-- 
However beautiful the theory, you should occasionally look at the evidence

Re: [O] BUG: preview latex with split environment

[Andreas Leha]

Rasmus ras...@gmx.us writes:
 Andreas Leha andreas.l...@med.uni-goettingen.de writes:

 Hi all,

 I encounter a BUG with org-toggle-latex-fragment on an equation that
 uses amsmath's split environment.

 The problem is that the \begin{equation},\end{equation} get stripped of
 the temporary tex file.

 I can't reproduce using your document from emacs -q.
 (org-version) = 8.3beta updated today. 

It seems I can.  I just pulled the master branch
(Org-mode version 8.3beta (release_8.3beta-517-g86d1a7))

I start emacs -Q -l emacs.minimal
where emacs.minimal is

--8---cut here---start-8---
(add-to-list 'load-path (expand-file-name 
~/local/emacs/org-mode-install/lisp))
(add-to-list 'auto-mode-alist '(\\.\\(org\\  |org_archive\\|txt\\)$ . 
org-mode))
(setq org-agenda-files '(/tmp/test.org))
;;(require 'org-install)
;;(require 'org-habit)

(add-to-list 'load-path (expand-file-name 
~/local/emacs/org-mode/contrib/lisp))

(global-set-key \C-ca 'org-agenda)

(org-babel-do-load-languages
 'org-babel-load-languages
 '((R . t)
   (latex . t)
   (emacs-lisp . t)
   (sh . t)))
--8---cut here---end---8---


I open this file:

--8---cut here---start-8---
#+TITLE: Test amsmath's split

* Some equation
with some split expression, e.g.
\begin{equation}
  \begin{split}
w \cdot x + b = 1, \text{ and}\\
w \cdot x + b = -1
  \end{split}
\end{equation}

To reproduce try to org-toggle-latex-fragment (C-c C-x C-l) on that
latex expression.

Export of this works fine.
--8---cut here---end---8---


I try to preview my equation and get this tex:


--8---cut here---start-8---
\documentclass{article}
\usepackage[usenames]{color}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
% Package fixltx2e omitted
\usepackage{graphicx}
% Package longtable omitted
% Package float omitted
% Package wrapfig omitted
% Package rotating omitted
\usepackage[normalem]{ulem}
\usepackage{amsmath}
\usepackage{textcomp}
\usepackage{marvosym}
\usepackage{wasysym}
\usepackage{amssymb}
% Package capt-of omitted
% Package hyperref omitted
\tolerance=1000
\pagestyle{empty} % do not remove
% The settings below are copied from fullpage.sty
\setlength{\textwidth}{\paperwidth}
\addtolength{\textwidth}{-3cm}
\setlength{\oddsidemargin}{1.5cm}
\addtolength{\oddsidemargin}{-2.54cm}
\setlength{\evensidemargin}{\oddsidemargin}
\setlength{\textheight}{\paperheight}
\addtolength{\textheight}{-\headheight}
\addtolength{\textheight}{-\headsep}
\addtolength{\textheight}{-\footskip}
\addtolength{\textheight}{-3cm}
\setlength{\topmargin}{1.5cm}
\addtolength{\topmargin}{-2.54cm}
\begin{document}
\begin{split}
w \cdot x + b = 1, \text{ and}\\
w \cdot x + b = -1
  \end{split}
\end{document}
--8---cut here---end---8---

What do I miss here?

Regards,
Andreas

Re: [O] BUG: preview latex with split environment

[Nicolas Goaziou]

Hello,

Andreas Leha andreas.l...@med.uni-goettingen.de writes:

 I open this file:

 #+TITLE: Test amsmath's split

 * Some equation
 with some split expression, e.g.
 \begin{equation}
   \begin{split}
 w \cdot x + b = 1, \text{ and}\\
 w \cdot x + b = -1
   \end{split}
 \end{equation}

 To reproduce try to org-toggle-latex-fragment (C-c C-x C-l) on that
 latex expression.

This should be fixed in master. Thank you for reporting it.


Regards,

-- 
Nicolas Goaziou