Enable flyspell-c++-clang-tidy only for saved files.

init.el

@@ -1,5 +1,5 @@
 ;;; init.el --- tastytea's Emacs init file.
-;; Time-stamp: <2019-09-24T23:38:28+00:00>
+;; Time-stamp: <2019-09-25T00:18:15+00:00>
 
 ;;; Commentary:
 ;; I am using this file with Emacs 26, but most of it will probably work with
@@ -216,20 +216,34 @@ With argument, do this that many times."
 ;; Syntax checking with many plugins.
 (unless slow-computer
   (use-package flycheck
+    :defer nil
     :config
     (global-flycheck-mode)
-    (setq flycheck-check-syntax-automatically '(save new-line mode-change))
+    ;; (setq flycheck-check-syntax-automatically '(save new-line mode-change))
     (flycheck-add-mode 'html-tidy 'web-mode)
     (flycheck-add-mode 'css-csslint 'web-mode)
     :bind
     ("<f5>" . flycheck-previous-error)
-    ("<f6>" . flycheck-next-error))
+    ("<f6>" . flycheck-next-error)
+    )
 
   (use-package flycheck-clang-tidy
     :after (flycheck projectile)
     :if (executable-find "clang-tidy")
+    :config
+    (defun my/clang-tidy-off ()
+      "Disable c++-clang-tidy."
+      (add-to-list 'flycheck-disabled-checkers 'c/c++-clang-tidy))
+    (defun my/clang-tidy-on ()
+      "Enable c++-clang-tidy on."
+      (setq-local flycheck-disabled-checkers
+                  (remove 'c/c++-clang-tidy flycheck-disabled-checkers))
+      )
     :hook
-    (flycheck-mode . flycheck-clang-tidy-setup))
+    (flycheck-mode . flycheck-clang-tidy-setup)
+    (first-change . my/clang-tidy-off)  ; Disable when file is modified.
+    (before-save . my/clang-tidy-on)    ; Enable if file is saved.
+    )
   )
 
 ;; Autocompletion mode with many plugins.

server/server

@@ -1,2 +1,2 @@
-127.0.0.1:51313 25947
+127.0.0.1:51313 12357
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