imaxima.el patch for OS X

imaxima.diff

diff --git a/interfaces/emacs/imaxima/imaxima.el b/interfaces/emacs/imaxima/imaxima.el
index e3feaa6..3a52a0b 100644
--- a/interfaces/emacs/imaxima/imaxima.el
+++ b/interfaces/emacs/imaxima/imaxima.el
@@ -296,6 +296,8 @@ nil means no scaling at all, t allows any scaling."
 	 (temp-directory))
 	((eql system-type 'cygwin)
 	 "/tmp/")
+	((eql system-type 'darwin)
+	 "/tmp/")
 	(t temporary-file-directory))
   "*Directory used for temporary TeX and image files."
   :type '(directory)