add graphviz-dot-mode

.gitmodules

@@ -190,3 +190,6 @@
 [submodule "site-lisp/plantuml-mode"]
 	path = site-lisp/plantuml-mode
 	url = https://github.com/skuro/plantuml-mode.git
+[submodule "site-lisp/graphviz-dot-mode"]
+	path = site-lisp/graphviz-dot-mode
+	url = https://github.com/ppareit/graphviz-dot-mode.git

lisp/init-editorconfig.el

@@ -26,7 +26,8 @@
 
 (with-eval-after-load 'editorconfig
   (add-to-list 'editorconfig-indentation-alist '(js-ts-mode js-indent-level))
-  (add-to-list 'editorconfig-indentation-alist '(plantuml-mode plantuml-indent-level)))
+  (add-to-list 'editorconfig-indentation-alist '(plantuml-mode plantuml-indent-level))
+  (add-to-list 'editorconfig-indentation-alist '(graphviz-dot-mode graphviz-dot-indent-width)))
 
 
 (provide 'init-editorconfig)

lisp/init-file.el

@@ -56,6 +56,10 @@
 (add-to-list 'auto-mode-alist '("CMakeLists\\.txt\\'" . cmake-mode))
 (add-to-list 'auto-mode-alist '("\\.cmake\\'" . cmake-mode))
 
+(autoload 'graphviz-dot-mode "graphviz-dot-mode" "" t)
+(add-to-list 'auto-mode-alist '("\\.dot\\'" . graphviz-dot-mode))
+(add-to-list 'auto-mode-alist '("\\.gv\\'" . graphviz-dot-mode))
+
 ;; optimize performance of long-line files
 (setq-default bidi-display-reordering t)
 (setq bidi-inhibit-bpa t

lisp/init-org.el

@@ -83,5 +83,9 @@
 (with-eval-after-load 'ob-plantuml
   (setq org-plantuml-exec-mode 'plantuml))
 
+(with-eval-after-load 'org-src
+  (defvar org-src-lang-modes)
+  (add-to-list 'org-src-lang-modes  '("dot" . graphviz-dot)))
+
 
 (provide 'init-org)