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; Try to get more info about 873/919

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* yasnippet.el (yas--watch-auto-fill): New variable watcher to catch
the problem.
(yas--auto-fill): If `yas--original-auto-fill-function' is nil, print
a warning with some info instead of signaling an error.
This commit is contained in:
Noam Postavsky 2018-03-17 06:40:58 -04:00
parent 5170f051ad
commit ae95810289
1 changed files with 41 additions and 1 deletions
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yasnippet.el
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@ -582,6 +582,15 @@ override bindings from other packages (e.g., `company-mode')."
"The original value of `auto-fill-function'.")
(make-variable-buffer-local 'yas--original-auto-fill-function)
(defun yas--watch-auto-fill (_sym newval _op _where)
(when (and (null newval) (eq auto-fill-function 'yas--auto-fill))
(debug nil "`yas--original-auto-fill-function' unexpectedly nil! Please report this backtrace (hit `c' to continue)")) )
;; Try to get more info on #873/919 (this only works for Emacs 26+).
(when (fboundp 'add-variable-watcher)
(add-variable-watcher 'yas--original-auto-fill-function
#'yas--watch-auto-fill))
(defun yas--snippet-next-id ()
(let ((id yas--snippet-id-seed))
(cl-incf yas--snippet-id-seed)
@ -3683,7 +3692,38 @@ field start. This hook does nothing if an undo is in progress."
reoverlays))
(goto-char orig-point)
(let ((yas--inhibit-overlay-hooks t))
(funcall yas--original-auto-fill-function))
(if (null yas--original-auto-fill-function)
;; Try to get more info on #873/919.
(let ((yas--fill-fun-values `((t ,(default-value 'yas--original-auto-fill-function))))
(fill-fun-values `((t ,(default-value 'auto-fill-function))))
;; Listing 2 buffers with the same value is enough
(print-length 3))
(save-current-buffer
(dolist (buf (let ((bufs (buffer-list)))
;; List the current buffer first.
(setq bufs (cons (current-buffer)
(remq (current-buffer) bufs)))))
(set-buffer buf)
(let* ((yf-cell (assq yas--original-auto-fill-function
yas--fill-fun-values))
(af-cell (assq auto-fill-function fill-fun-values)))
(when (local-variable-p 'yas--original-auto-fill-function)
(if yf-cell (setcdr yf-cell (cons buf (cdr yf-cell)))
(push (list yas--original-auto-fill-function buf) yas--fill-fun-values)))
(when (local-variable-p 'auto-fill-function)
(if af-cell (setcdr af-cell (cons buf (cdr af-cell)))
(push (list auto-fill-function buf) fill-fun-values))))))
(lwarn '(yasnippet auto-fill bug) :error
"`yas--original-auto-fill-function' unexpectedly nil in %S! Disabling auto-fill.
%S
`auto-fill-function': %S"
(current-buffer) yas--fill-fun-values fill-fun-values)
;; Try to avoid repeated triggering of this bug.
(auto-fill-mode -1)
;; Don't pop up more than once in a session (still log though).
(defvar warning-suppress-types) ; `warnings' is autoloaded by `lwarn'.
(add-to-list 'warning-suppress-types '(yasnippet auto-fill bug)))
(funcall yas--original-auto-fill-function)))
(save-excursion
(setq end (progn (forward-paragraph) (point)))
(setq beg (progn (backward-paragraph) (point))))