org-clean-before-export matches non-special columns spuriously
* org-table.el (org-table-clean-before-export): The regexes match
spaces in addition to the special characters that might be used in
the first column as special marking characters. Remove the space
from the character class.
In addition, the `special' variable included a backslash which
afaict does nothing: delete it.
The function itself takes an optional parameter which is not used by
any of the callers: get rid of it. Getting rid of it allows a small
simplification of the code.
The bug was found by Thorsten Grothe:
http://thread.gmane.org/gmane.emacs.orgmode/88634