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Fix subtle problems in tabulated-list-mode with line numbers

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* lisp/emacs-lisp/tabulated-list.el
(tabulated-list-watch-line-number-width): Call
tabulated-list-init-header instead of tabulated-list-revert.
(tabulated-list-window-scroll-function): New function.
(tabulated-list-mode): Put 'tabulated-list-window-scroll-function'
on the buffer-local 'window-scroll-functions' list.
This commit is contained in:
Eli Zaretskii 2017-11-04 16:28:25 +02:00
parent 1f1de8e872
commit 93818eed8a
1 changed files with 13 additions and 2 deletions
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15
lisp/emacs-lisp/tabulated-list.el
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@ -603,7 +603,16 @@ With a numeric prefix argument N, sort the Nth column."
(let ((lnum-width (tabulated-list-line-number-width)))
(when (not (= tabulated-list--current-lnum-width lnum-width))
(setq-local tabulated-list--current-lnum-width lnum-width)
(tabulated-list-revert)))))
(tabulated-list-init-header)))))
(defun tabulated-list-window-scroll-function (window _start)
(if display-line-numbers
(let ((lnum-width
(with-selected-window window
(line-number-display-width 'columns))))
(when (not (= tabulated-list--current-lnum-width lnum-width))
(setq-local tabulated-list--current-lnum-width lnum-width)
(tabulated-list-init-header)))))
;;; The mode definition:
@ -654,7 +663,9 @@ as the ewoc pretty-printer."
;; the line-number width needs to change due to scrolling.
(setq-local tabulated-list--current-lnum-width 0)
(add-hook 'pre-redisplay-functions
#'tabulated-list-watch-line-number-width nil t))
#'tabulated-list-watch-line-number-width nil t)
(add-hook 'window-scroll-functions
#'tabulated-list-window-scroll-function nil t))
(put 'tabulated-list-mode 'mode-class 'special)