* lisp/ox.el (org-export-read-attribute): Do not use `read' to read
attributes. Instead, extract keywords and values from it, which
means each value will be a string when non-nil.
* contrib/lisp/ox-groff.el (org-groff-link--inline-image): Use new
attribute syntax. Small refactoring.
* lisp/ox-ascii.el (org-ascii-horizontal-rule): Use new attribute
syntax.
* lisp/ox-beamer.el (org-beamer-plain-list): Use new attribute syntax.
* lisp/ox-html.el (org-html--textarea-block): Use new attribute
syntax.
* lisp/ox-latex.el (org-latex--inline-image, org-latex--org-table,
org-latex--math-table): Use new attribute syntax.
* lisp/ox-man.el (org-man-table--org-table): Use new attribute syntax.
Small refactoring.
* lisp/ox-odt.el (org-odt-link--inline-image, org-odt-table-cell): Use
new attribute syntax.
* testing/lisp/test-ox.el: Add tests.
This patch introduces two changes. To begin with, it removes the need
for quoting and escaping characters. Also, all non-nil values are
stored as strings. As an exception "nil" is stored as nil.
* lisp/ox-latex.el (latex): Introduce new buffer keyword.
(org-latex-template): Use new keyword.
* lisp/ox-beamer.el (org-beamer-template): Use new keyword.
* lisp/org.el (org-create-formula--latex-header): Use new keyword.
* contrib/lisp/ox-koma-letter.el (org-koma-letter-template): Use new
keyword.
Previewing of LaTeX snippets takes account of LATEX_HEADER keywords.
LATEX_HEADER_EXTRA keyword allows to specify some header lines that
will not be used for building snippets.
* lisp/ox-beamer.el (org-beamer-keyword): Remove frame arount toc when
generated from a TOC keyword.
Since TOC keywords are a way to add a table of contents at some
precise location, it is reasonable to think the user will also want to
control the frame surronding it. Table of contents generated with
toc:t option item still get wrapped within a frame.
* contrib/lisp/ox-koma-letter.el (org-koma-letter-template): Allow to
span documentclass options accross multiple lines in template.
* lisp/ox-beamer.el (org-beamer-template): Allow to span documentclass
options accross multiple lines in template.
* lisp/ox-latex.el (org-latex-template): Allow to span documentclass
options accross multiple lines in template.
Thanks to Michael Strey for reporting this bug.
* lisp/ox-beamer.el (org-beamer-template): Add missing `class'
argument for `format-string'.
* lisp/ox-latex.el (org-latex-template): Add missing `class' argument
for `format-string'.
Thanks to Sébastien Vauban for reporting the problem and providing the
initial patch.
* lisp/ox-beamer.el (org-beamer-template): Provide an error when LaTeX
class is invalid.
* lisp/ox-latex.el (org-latex-template): Provide an error when LaTeX
class is invalid.
Patch suggested by Sébastien Vauban
