Also remove blank lines before the ";;; org*el ends here" declarations.
Having a "Version" header forced us to update every file when releasing a
new version of Org; it also forced us to update every file when merging Org
with Emacs trunk, thus cluttering the diffs between the previously merged
version and the new one with useless information.
Glenn Morris suggested this in emacs-devel:
http://lists.gnu.org/archive/html/emacs-devel/2011-08/msg00322.html
These languages are capable of writing results to file; for several of
them this is their only mode of operation. These changes cause the
languages to return to ob.el either the computed result, or nil, when
they have written results to file themselves. This is in place of the
previous method of returning the output file name as a string to
ob.el.
* lisp/ob-asymptote.el (org-babel-execute:asymptote): Return nil to
signal that the intended content has been written to file.
* lisp/ob-ditaa.el (org-babel-execute:ditaa): Return nil to signal
that the intended content has been written to file.
* lisp/ob-dot.el (org-babel-execute:dot): Return nil to signal that
the intended content has been written to file.
* lisp/ob-gnuplot.el (org-babel-execute:gnuplot): Return nil to signal
that the intended content has been written to file.
* lisp/ob-latex.el (org-babel-execute:latex): Return nil to signal
that the intended content has been written to file.
* lisp/ob-mscgen.el (org-babel-execute:mscgen): Return nil to
signal that the intended content has been written to file.
* lisp/ob-octave.el (org-babel-execute:octave): Return result; not
name of output file.
* lisp/ob-plantuml.el (org-babel-execute:plantuml): Return nil to
signal that the intended content has been written to file.
* lisp/ob-python.el (org-babel-execute:python): Return result; not
name of output file.
* lisp/ob-ruby.el (org-babel-execute:ruby): Return result; not
name of output file.
* lisp/ob-sass.el (org-babel-execute:sass): Return nil if result has
been written to file
from the comments of the new file
This software provides EMACS org-babel export support for message
sequence charts. The mscgen utility is used for processing the
sequence definition, and must therefore be installed in the system.
Mscgen is available and documented at
http://www.mcternan.me.uk/mscgen/index.html
This code is directly inspired by Eric Schulte's ob-dot.el
Example:
msc {
A,B;
A -> B [ label = "send message" ];
A <- B [ label = "get answer" ];
}
Header for alternative file type:
This differs from most standard languages in that
1) there is no such thing as a "session" in mscgen
2) we are generally only going to return results of type "file"
3) we are adding the "file" and "filetype" header arguments
4) there are no variables
