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Filter out rng-state elements in nxml-mode buffers from the kill ring

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* lisp/nxml/nxml-mode.el (nxml--buffer-substring-filter): Filter
out `rng-state' objects (bug#50061).
(nxml-mode): Set `filter-buffer-substring-function'.
This commit is contained in:
Lars Ingebrigtsen 2021-08-15 15:43:35 +02:00
parent ab23fa4eb2
commit 2a022e9be3
1 changed files with 14 additions and 0 deletions
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14
lisp/nxml/nxml-mode.el
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@ -540,6 +540,7 @@ Many aspects this mode can be customized using
(nxml-scan-prolog)))))
(setq-local syntax-ppss-table sgml-tag-syntax-table)
(setq-local syntax-propertize-function #'nxml-syntax-propertize)
(setq-local filter-buffer-substring-function #'nxml--buffer-substring-filter)
(add-hook 'change-major-mode-hook #'nxml-cleanup nil t)
(when (not (and (buffer-file-name) (file-exists-p (buffer-file-name))))
@ -564,6 +565,19 @@ Many aspects this mode can be customized using
(with-demoted-errors (rng-nxml-mode-init)))
(defun nxml--buffer-substring-filter (beg end &optional delete)
(let ((string (buffer-substring--filter beg end delete)))
;; The `rng-state' property is huge, so don't copy it to the kill
;; ring. This avoids problems when saving the kill ring with
;; savehist.
(when (seq-find (lambda (elem)
(plist-get (nth 2 elem) 'rng-state))
(object-intervals string))
(remove-text-properties 0 (length string)
'(rng-state nil fontified nil)
string))
string))
(defun nxml-cleanup ()
"Clean up after nxml-mode."
;; Disable associated minor modes.