From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Mikhail Titov" <mlt@gmx.us>
Subject: [babel] java headless support is missing for most graphing languages
Date: Thu, 17 May 2012 19:55:46 -0500
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To: emacs-orgmode@gnu.org

Hello!

I=E2=80=99ve noticed that at least ditaa and plantuml fail to evaluate =
with babel.

While for ditaa I can override :java list item with something like

(setq org-babel-default-header-args:ditaa
  '((:results . "file")
    (:exports . "results")
    (:java . "-Dfile.encoding=3DUTF-8 -Djava.awt.headless=3Dtrue")))

However plantuml is handling differently. Curiously enough it runs just =
fine without stdin/stdout redirection from the command line. However if =
I tried to use input/output redirection like in ob-plantuml.el , it =
complains like the following:  Exception in thread "main" =
java.lang.InternalError: Can't connect to window server - not enough =
permissions.

I propose to add by default =E2=80=9C-Djava.awt.headless=3Dtrue=E2=80=9D =
to all =E2=80=9Clanguage=E2=80=9D handlers supported by org-babel. I =
think it won=E2=80=99t hurt and will make working from CLI more =
enjoyable out of box.

Mikhail