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67 lines
1.9 KiB
Org Mode
67 lines
1.9 KiB
Org Mode
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:PROPERTIES:
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:ID: 334a4188-93e6-4378-b22d-b0c302fc26a1
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:END:
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#+title: Flycheck
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#+filetags: emacs-load
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# SPDX-FileCopyrightText: 2022 Richard Brežák <richard@brezak.sk>
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#
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# SPDX-License-Identifier: LGPL-3.0-or-later
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* Flycheck Posframe
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Display flycheck messages in a posframe.
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#+begin_src emacs-lisp :noweb yes
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(use-package flycheck-posframe
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:straight t
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:config
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(setq flycheck-posframe-position 'frame-bottom-right-corner)
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<<flycheck-display-errors-delay>>
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<<lsp-ui-sideline-show-diagnostics>>
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:hook (flycheck-mode . flycheck-posframe-mode))
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#+end_src
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Flycheck calls ~flycheck-display-errors-function~ every ~flycheck-display-errors-delay~.
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#+name: flycheck-display-errors-delay
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#+begin_src emacs-lisp
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(setq flycheck-display-errors-delay 0.1)
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#+end_src
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Since we get errors and such in a posframe, we don't need them in the sideline.
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#+name: lsp-ui-sideline-show-diagnostics
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#+begin_src emacs-lisp
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(setq lsp-ui-sideline-show-diagnostics nil)
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#+end_src
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Since flycheck recalls ~flycheck-display-errors-function~ on every point movement, it creates this really ugly flicker and also lags a bit, so if the diagnostic message didn't change, filter out the call.
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#+name: flycheck-posframe-change-filter
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#+begin_src emacs-lisp
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(defvar flycheck-posframe-last-error-list '())
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(advice-add
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'flycheck-posframe-hidehandler
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:override
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(lambda (info)
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(if (not (equal
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(flycheck-overlay-errors-at (point))
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flycheck-posframe-last-error-list))
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(progn
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(setq flycheck-posframe-last-error-list nil)
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t)
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nil))
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'((name . "flycheck-error-display-filter")))
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(advice-add
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'flycheck-posframe-show-posframe
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:before-while
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(lambda (diagnostic)
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(let ((last-list flycheck-posframe-last-error-list))
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(setq flycheck-posframe-last-error-list diagnostic)
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(if (equal diagnostic last-list) nil t)))
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'((name . "flycheck-error-display-filter")))
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#+end_src
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