Add latex format highlighting

[GoogleCodeExporter]

LaTeX is quite a bit different than anything else, and it is really obvious
when your comments get syntax highlighted instead of the actual commands.
This lang- file is pretty basic but at least makes syntax highlighting
usable for code blocks called out with lang-latex (and also lang-tex).

Something like:

<pre class="prettyprint lang-latex"><code>% resume.tex
% vim:set ft=tex spell:
\documentclass[10pt,letterpaper]{article}
\usepackage[letterpaper,margin=0.8in]{geometry}
\usepackage{mdwlist}
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\pagestyle{empty}
\setlength{\tabcolsep}{0em}
</code></pre>

Original issue reported on code.google.com by dpmc...@gmail.com on 4 May 2010 at 6:09

Attachments:

• lang-latex.js

[GoogleCodeExporter]

The previous file I attached had some problems in IE due to trailing commas in 
the
arrays; this version has that fixed.

Original comment by dpmc...@gmail.com on 5 May 2010 at 2:13

Attachments:

• lang-latex.js

[GoogleCodeExporter]

Hi, thank you for this plugin! We are using it with great success at 
http://tex.stackexchange.com -- however it seems there is at least one edge 
condition with it on comments. 

http://meta.tex.stackexchange.com/questions/872/text-immediate-following-double-
backslashes-is-highlighted-as-macro-inside-a-code/874#874

Original comment by wump...@gmail.com on 30 Jan 2011 at 6:58

[GoogleCodeExporter]

This issue mentioned in comment 2 seems to be fixable by changing the regex for 
commands:

from
[PR.PR_KEYWORD, /^\\[^ \r\n{}\[\]=]+/],
to
[PR.PR_KEYWORD, /^\\(\\|[^ \r\n{}\[\]=]+)/],

I tested this with the code linked in comment 2 and it works well.
I attached the updated language file.

Original comment by martin.s...@gmail.com on 30 Jan 2011 at 3:22

Attachments:

• lang-latex.js

[GoogleCodeExporter]

Still works for my purposes and on the original blog post I used this on. 
Thanks for finding and fixing this small issue. Glad the plugin was of help to 
you guys!

Original comment by dpmc...@gmail.com on 30 Jan 2011 at 8:23

[GoogleCodeExporter]

Would it be easier to change this to only match a backslash followed by letters 
and @s. Everything else (usually) ends the control word. And one might 
separately match control characters, i.e. a backslash followed by a single 
non-letter.

Original comment by caram...@gmail.com on 30 Jan 2011 at 8:43

[GoogleCodeExporter]

Here the newly updated file: It now only allows letters, '@' and ':' (for 
LaTeX3 code) and (as requested as a second reges) any one character (for '\\', 
'\%', etc.) after a backslash.

Original comment by martin.s...@gmail.com on 31 Jan 2011 at 10:34

Attachments:

• lang-latex.js

[GoogleCodeExporter]

And here an additional proposal with highlighted declarations (i.e. \def, 
\newcommand and friends) as well '$' and '&' characters. Keywords are same as 
the last one.

Original comment by martin.s...@gmail.com on 31 Jan 2011 at 10:38

Attachments:

• lang-latex.js

[GoogleCodeExporter]

There are a couple of patches floating around.

I'm happy to fold into trunk whichever patch receives the consensus from 
tex.stackexchange.com.  Is there already a consensus or does someone want to 
ask on meta.tex...?

Original comment by mikesamuel@gmail.com on 31 Jan 2011 at 11:40

• Changed state: Accepted

[GoogleCodeExporter]

Here a small bugfix for the file proposed in comment 7. 
The declaration rule needed a boundary marker at the end.

See 
http://meta.tex.stackexchange.com/questions/872/text-immediate-following-double-
backslashes-is-highlighted-as-macro-inside-a-code/876#876 for the current 
discussion on meta.tex.sx.

Original comment by martin.s...@gmail.com on 1 Feb 2011 at 12:24

Attachments:

• lang-latex.js

[GoogleCodeExporter]

Here my final version. The LaTeX3 support was dropped because it can leads to 
wrong result in normal LaTeX user code. The highlighting of declarations has 
been dropped on demand.

I will open a public vote on tex.sx for this version.

Original comment by martin.s...@gmail.com on 3 Feb 2011 at 3:02

Attachments:

• lang-latex.js

[GoogleCodeExporter]

The last version (10) seems to be the (silent) consensus on 
meta.tex.stackexchange.com.

Original comment by caram...@gmail.com on 10 Feb 2011 at 9:14

[GoogleCodeExporter]

I added the latest version of the patch to trunk.
Martin, I added an apache license header to the top since that's the license 
used elsewhere.  If you're not okay with that, let me know and I'll delete that 
file : 
http://code.google.com/p/google-code-prettify/source/browse/trunk/src/lang-tex.j
s

See dpmc...'s unittest at 
http://google-code-prettify.googlecode.com/svn/trunk/tests/prettify_test_2.html#
latex

Original comment by mikesamuel@gmail.com on 5 Mar 2011 at 4:22

• Changed state: Fixed