Rewrite core libraries (WIP)

core/core-syntax-checking.el

@@ -0,0 +1,42 @@
+;;; core-syntax-checking.el --- tasing you for every forgotten semicolon
+
+(package! flycheck
+  :commands (flycheck-mode flycheck-list-errors flycheck-buffer)
+  :init
+  (setq flycheck-indication-mode 'right-fringe
+        ;; Removed checks on idle/change for snappiness
+        flycheck-check-syntax-automatically '(save mode-enabled)
+        flycheck-highlighting-mode 'symbols
+        flycheck-disabled-checkers '(emacs-lisp emacs-lisp-checkdoc make)
+        ;; `flycheck-pos-tip'
+        flycheck-pos-tip-timeout 10
+        flycheck-display-errors-delay 0.5)
+
+  :config
+  ;; (def-popup! " ?\\*Flycheck.+\\*" :align below :size 14 :noselect t :regexp t)
+
+  (map! :map flycheck-error-list-mode-map
+        :n "C-n" 'flycheck-error-list-next-error
+        :n "C-p" 'flycheck-error-list-previous-error
+        :n "j"   'flycheck-error-list-next-error
+        :n "k"   'flycheck-error-list-previous-error
+        :n "RET" 'flycheck-error-list-goto-error)
+
+  ;; Flycheck buffer on ESC in normal mode.
+  (defun doom*flycheck-buffer ()
+    (when (bound-and-true-p flycheck-mode) (flycheck-buffer)))
+  (advice-add 'evil-force-normal-state :after 'doom*flycheck-buffer)
+
+  (define-fringe-bitmap 'flycheck-fringe-bitmap-double-arrow
+    [0 0 0 0 0 4 12 28 60 124 252 124 60 28 12 4 0 0 0 0]))
+
+;; NOTE Looks bad on emacs-mac build on MacOS
+(package! flycheck-pos-tip
+  :unless (eq window-system 'ns)
+  :after flycheck
+  :config (flycheck-pos-tip-mode +1))
+
+(package! flyspell :commands flyspell-mode)
+
+(provide 'core-syntax-checking)
+;;; core-syntax-checking.el ends here