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Cleanup stale diagnostics on Flymake restart

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Not doing so would cause duplicate diagnostics.  See
https://github.com/joaotavora/eglot/issues/223 for an example.

* lisp/progmodes/flymake.el (Version): 1.0.4
(flymake-mode): Cleanup overlays before starting Flymake.
This commit is contained in:
João Távora 2019-02-10 12:05:52 +00:00
parent f8e9da8bb6
commit b78363eb0f
1 changed files with 6 additions and 1 deletions
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7
lisp/progmodes/flymake.el
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@ -4,7 +4,7 @@
;; Author: Pavel Kobyakov <pk_at_work@yahoo.com>
;; Maintainer: João Távora <joaotavora@gmail.com>
;; Version: 1.0.3
;; Version: 1.0.4
;; Package-Requires: ((emacs "26.1"))
;; Keywords: c languages tools
@ -974,6 +974,11 @@ special *Flymake log* buffer." :group 'flymake :lighter
(add-hook 'after-save-hook 'flymake-after-save-hook nil t)
(add-hook 'kill-buffer-hook 'flymake-kill-buffer-hook nil t)
;; If Flymake happened to be alrady already ON, we must cleanup
;; existing diagnostic overlays, lest we forget them by blindly
;; reinitializing `flymake--backend-state' in the next line.
;; See https://github.com/joaotavora/eglot/issues/223.
(mapc #'delete-overlay (flymake--overlays))
(setq flymake--backend-state (make-hash-table))
(setq flymake--recent-changes nil)