[emacs] add org-babel for dot

emacs/.emacs

@@ -14,6 +14,9 @@
 ;; Enable word wrap
 ;(setq-default word-wrap t)
 ;
+;; Don't use tabs for indentation
+(setq indent-tabs-mode nil)
+;
 ;; Wrap long lines
 ; https://www.gnu.org/software/emacs/manual/html_node/emacs/Visual-Line-Mode.html
 ; http://ergoemacs.org/emacs/emacs_long_line_wrap.html
@@ -126,7 +129,13 @@
 ;; babel config
 (org-babel-do-load-languages
   'org-babel-load-languages
-  '((python . t)))
+  '((dot . t)
+    (python . t)))
+;
+;; Don't ask confirmation for code block eval of some languages
+(defun my-org-confirm-babel-evaluate (lang body)
+  (not (string= lang "dot")))  ; don't ask confirmation for dot
+(setq org-confirm-babel-evaluate #'my-org-confirm-babel-evaluate)
 ;
 ;; Don't split line when doing M-RET at an item to make new item
 ; https://irreal.org/blog/?p=6297
@@ -139,6 +148,12 @@
 ;; Don't hide hyperlink source
 (setq org-descriptive-links nil)
 ;
+;; Show images inline by default
+; https://emacs.stackexchange.com/questions/14758/in-org-mode-how-to-always-display-inline-images-at-emacs-startup
+(setq org-startup-with-inline-images t)
+; https://stackoverflow.com/questions/17621495/emacs-org-display-inline-images
+;(setq org-display-inline-images t)
+;
 ;; Show all headings in an org file as folded on startup
 ; Either of the following two lines seem to work
 ;(setq org-set-startup-visibility 'overview)