Org Edit Latex Save

Org Edit LaTeX

With this package, you can edit a latex fragment/environment in an edit buffer, and you can even complete and preview LaTeX in the edit buffer.

The latest release of Org (version 9.1) provides a similar feature, i.e. edit a latex environment in an edit buffer. But there are still some features offered here are not in org yet. Some of them are:

• Complete based on your latex header.

  With org-edit-latex, you can complete your latex commands according to the #+latex_header: lines in your main org buffer (powered by AucTeX). This is not possible in vanilla org.

• Preview in the edit buffer.

  You don't have to quit your edit buffer to do the preview. You can just preview at point! With the fantastic AucTeX working behind, you can cache your preamble and preview really fast (faster than org-preview).

• Edit and preview latex fragments in edit buffer.

  Besides LaTeX environments, you can also edit/preview latex fragments in edit buffer. This may not count as a feature. but in case you need it, it's there.

This package has been tested on Org 8.0 and above. Feel free to use it on Org mode shipped with emacs.

Install

First, download org-edit-latex and add following to your init file:

(require 'org-edit-latex)

You should add latex to your org-babel-load-languages:

(org-babel-do-load-languages
 'org-babel-load-languages
 '((emacs-lisp . t)
   (latex . t)   ;; <== add latex to the list
   (python . t)
   (shell . t)
   (ruby . t)
   (perl . t)))

Basic Usage

Turn on org-edit-latex-mode and use following commands to start/exit/abort a edit buffer.

• org-edit-special: enter a dedicated LaTeX buffer.
• org-edit-src-exit: exit LaTeX buffer when you finished editing.
• org-edit-src-abort: quit editing without saving changes.

Note that all above commands are built-in Org commands and your current keybindings will probably do the job.

Inline Math

Inline latex is also supported, but I don't recommend using this package on simple inline math, such as math symbols, SI units, etc. For that use case, you may check cdlatex, which is more than enough to handle that. The setup of cdlatex is pretty straightforward, see https://github.com/jkitchin/scimax/issues/117 to get a general idea.

Entry Point

To get started, you may also want to check out yasnippet to fast insert a latex environment before you can use org-edit-special to enter the edit buffer.

For instance, try M-x yas-new-snippet and insert a snippet like this:

# -*- mode: snippet -*-
# name: eqn
# key: eqn
# --
\begin{equation}
  \label{eq:1}
  $0
\end{equation}

After you loaded the snippet, type eqn and press tab to insert the snippet. Then you can call org-edit-special to enter the edit buffer.

TeX Master

By default, org-edit-latex will generate a TeX-master file automatically. The master file is used for:

• Completion in edit buffer via AucTeX
• Preview in the edit buffer

The LaTeX preamble used by the master file is the same as org-preview settings.

The master file locates in the same directory as the org file does. You can update the master file via org-edit-latex-update-master after changing the preview settings.

You can use org-edit-latex-preview-at-point to preview in a edit buffer. By default, the keybinding of preview-at-point (AucTeX) is remapped to this function.

Demo

w/o master:

with master:

Change Log

• 0.8.0 Add support for TeX-master; provide preview function.
• 0.7.0 Fix a few bugs regarding latex fragment/environment with name/caption/attrib.
• 0.6.3 Fix inline math issue caused by a bug from org.
• 0.6.2 src blocks will be untouched.
• 0.6.1 Fix inline src block not recognized.
• 0.6.0 Editing of inline latex (including non math latex fragments) is supported. ...

TODO

• Mention cdlatex
• Mention yasnippet
• Add more demo gifs
• Add support for inline math.
• Turn this feature into a minor mode. (by purcell)