#+TITLE:   lang/latex
#+DATE:    January 16, 2017
#+SINCE:   v1.3
#+STARTUP: inlineimages

* Table of Contents :TOC_3:noexport:
- [[#description][Description]]
  - [[#module-flags][Module Flags]]
  - [[#plugins][Plugins]]
- [[#prerequisites][Prerequisites]]
- [[#features][Features]]
- [[#customization][Customization]]
  - [[#specifying-the-location-of-a-bibtex-file--corresponding-pdfs][Specifying the location of a bibtex file & corresponding PDFs]]
  - [[#changing-the-pdfs-viewer][Changing the PDFs viewer]]

* Description
Provide a helping hand when working with LaTeX documents.

+ Sane defaults
+ Fontification of many popular commands
+ Pretty indentation of wrapped lines using the ~adaptive-wrap~ package
+ Spell checking with ~flycheck~
+ Change PDF viewer to Okular or ~latex-preview-pane~
+ Bibtex editor
+ Autocompletion using ~company-mode~
+ Ivy or Helm for selecting bibliography
+ Compile your .tex code only once using LatexMk

** Module Flags
+ ~+latexmk~ Use LatexMk instead of LaTeX to compile documents.

** Plugins
+ [[http://www.gnu.org/software/auctex/][auctex]]
+ [[http://elpa.gnu.org/packages/adaptive-wrap.html][adaptive-wrap]]
+ [[https://github.com/jsinglet/latex-preview-pane][latex-preview-pane]]
+ [[https://github.com/tom-tan/auctex-latexmk][auctex-latexmk]]*
+ [[https://github.com/alexeyr/company-auctex][company-auctex]]*
+ [[https://github.com/TheBB/company-reftex][company-reftex]]*
+ [[https://github.com/vspinu/company-math][company-math]]*
+ [[https://github.com/tmalsburg/helm-bibtex][ivy-bibtex]]* or [[https://github.com/tmalsburg/helm-bibtex][helm-bibtex]]*

* TODO Prerequisites

* TODO Features

* Customization
** Specifying the location of a bibtex file & corresponding PDFs
The reftex and bibtex-completion packages have two variables that allow you to
specify where it should find your bibliography file(s) and their corresponding
PDFs:

#+BEGIN_SRC emacs-lisp
(setq reftex-default-bibliography "/your/bib/file.bib")
;; Optionally specifying a location for the corresponding PDFs
(setq bibtex-completion-library-path (list "/your/bib/pdfs"))
#+END_SRC

** Changing the PDFs viewer
This module provides integration for four supported pdf viewers. They are

+ [[https://skim-app.sourceforge.io/][Skim.app]] (MacOS only)
+ Evince
+ Sumatra PDF
+ Zathura
+ Okular
+ pdf-tools (requires =:tools pdf= module)

They are searched for in this order. See ~+latex-viewers~ to change the order,
or remove tools from the search altogether. If you want to exclusively use one
tool, for instance:

#+BEGIN_SRC emacs-lisp
(setq +latex-viewers '(zathura))
#+END_SRC

If none of these tools are found, ~latex-preview-pane~ (uses ~DocView~ in Emacs)
is used as a fallback. You can use this exclusively by setting ~+latex-viewers~
to ~nil~.