Update semantic config

- simplify modes
- inhibit outside cc and java modes
- bind M-. to semantic-ia-fast-jump in cc-mode

.emacs.d/init.el

@@ -115,15 +115,24 @@
 (use-package semantic
   :defer
   :init
-  (add-hook 'c-mode-hook (lambda ()
+  (add-hook 'c-mode-hook 'semantic-mode)
-                           (semantic-mode 1)))
   :config
-  (global-semantic-decoration-mode 1)
+  (setq semantic-default-submodes '(global-semantic-idle-scheduler-mode
-  (global-semantic-highlight-func-mode 1)
+                                    global-semanticdb-minor-mode
-  (global-semantic-show-unmatched-syntax-mode 1)
+                                    global-semantic-decoration-mode
-  (global-semantic-idle-summary-mode 1)
+                                    global-semantic-highlight-func-mode
-  (global-semantic-stickyfunc-mode 1)
+                                    global-semantic-show-unmatched-syntax-mode
-  (setq semantic-idle-scheduler-idle-time 0.1))
+                                    global-semantic-idle-summary-mode
+                                    global-semantic-stickyfunc-mode
+                                    global-semantic-idle-local-symbol-highlight-mode)
+        semantic-idle-scheduler-idle-time 0.2)
+
+  ; inhibit semantic outside of specific modes
+  (add-to-list 'semantic-inhibit-functions
+               #'(lambda () (not (member major-mode '(cc-mode java-mode)))))
+
+  (eval-after-load "cc-mode"
+    '(define-key c-mode-map (kbd "M-.") 'semantic-ia-fast-jump)))
 
 (use-package term
   :config