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tools/flycheck: change idle delay behavior

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Flycheck will now wait longer to check for errors when the last check
produced no errors, and quicker when there are. It will also avoid
displaying flycheck-posframe if in insert mode (as it can disturb cursor
positioning and change evil state in some edge cases).
This commit is contained in:
Henrik Lissner 2019-04-01 20:30:31 -04:00
parent cd68044b5d
commit 79e8a466a3
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GPG key ID: 5F6C0EA160557395
1 changed files with 17 additions and 9 deletions
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26
modules/tools/flycheck/config.el
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@ -5,14 +5,15 @@
;;
;; Packages
;;; Packages
(def-package! flycheck
:commands (flycheck-list-errors flycheck-buffer)
:after-call (doom-switch-buffer-hook after-find-file)
:config
;; Emacs feels snappier without checks on newline
(setq flycheck-check-syntax-automatically (delq 'new-line flycheck-check-syntax-automatically))
;; new-line checks are a mote excessive; idle checks are more than enough
(setq flycheck-check-syntax-automatically
(delq 'new-line flycheck-check-syntax-automatically))
(defun +flycheck|buffer ()
"Flycheck buffer on ESC in normal mode."
@ -21,11 +22,13 @@
nil))
(add-hook 'doom-escape-hook #'+flycheck|buffer t)
(after! evil
(setq-hook! 'evil-insert-state-entry-hook
flycheck-idle-change-delay 1.75)
(setq-hook! 'evil-insert-state-exit-hook
flycheck-idle-change-delay (default-value 'flycheck-idle-change-delay)))
(defun +flycheck|adjust-syntax-check-eagerness ()
"Check for errors less often when there aren't any.
Done to reduce the load flycheck imposes on the current buffer."
(if flycheck-current-errors
(kill-local-variable 'flycheck-idle-change-delay)
(setq-local flycheck-idle-change-delay 3.0)))
(add-hook 'flycheck-after-syntax-check-hook #'+flycheck|adjust-syntax-check-eagerness)
(global-flycheck-mode +1))
@ -33,7 +36,12 @@
(def-package! flycheck-popup-tip
:commands (flycheck-popup-tip-show-popup flycheck-popup-tip-delete-popup)
:init (add-hook 'flycheck-mode-hook #'+flycheck|init-popups)
:config (setq flycheck-popup-tip-error-prefix "✕ "))
:config
(setq flycheck-popup-tip-error-prefix "✕ ")
(after! evil
;; Don't display errors while in insert mode, as it can affect the cursor's
;; position or cause disruptive input delays.
(add-hook 'flycheck-posframe-inhibit-functions #'evil-insert-state-p)))
(def-package! flycheck-posframe