[BUG, LaTeX] LATEX_CLASS_OPTIONS don't always work

[Michael Strey <mstrey@strey.biz>]

This is a minor issue.

The replacement of LaTeX class options by

#+LATEX_CLASS_OPTIONS: [ngerman]

doesn't work if the documentclass definition in org-latex-classes
consists of more than one line.

I used such a definition in my Koma-script letters:

\documentclass[%
fontsize=11pt,%
strey_consult,%
c4envelope,  % optional
]{scrlttr2}

For such a definition the replacement doesn't work.

If I reduce the LaTeX expression to one line, everything is fine.

I tracked down the issue to the regular expression in 

(if class-options
    (replace-regexp-in-string
     "^[ \t]*\\\\documentclass\\(\\[.*?\\]\\)"
     class-options header t nil 1)
 header)

Here I gave up for today.

Regards
-- 
Michael Strey 
www.strey.biz