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Preserve header lines from derived modes in tabulated lists

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* lisp/emacs-lisp/tabulated-list.el (tabulated-list-init-header):
Preserve header line set by derived modes (bug#21025).
This commit is contained in:
Vaidheeswaran C 2019-06-25 18:09:54 +02:00 • committed by Lars Ingebrigtsen
parent 90c25b2452
commit 9de1177a1e
1 changed files with 7 additions and 2 deletions
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9
lisp/emacs-lisp/tabulated-list.el
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@ -73,6 +73,11 @@ frames."
:type 'character
:version "27.1")
(defface tabulated-list-fake-header
'((t :overline t :underline t :weight bold))
"Face used on fake header lines."
:version "27.1")
;; The reason `tabulated-list-format' and other variables are
;; permanent-local is to make it convenient to switch to a different
;; major mode, switch back, and have the original Tabulated List data
@ -308,7 +313,6 @@ Populated by `tabulated-list-init-header'.")
(setq cols (apply 'concat (nreverse cols)))
(if tabulated-list-use-header-line
(setq header-line-format cols)
(setq header-line-format nil)
(setq-local tabulated-list--header-string cols))))
(defun tabulated-list-print-fake-header ()
@ -322,7 +326,8 @@ Do nothing if `tabulated-list--header-string' is nil."
(move-overlay tabulated-list--header-overlay (point-min) (point))
(setq-local tabulated-list--header-overlay
(make-overlay (point-min) (point))))
(overlay-put tabulated-list--header-overlay 'face 'underline))))
(overlay-put tabulated-list--header-overlay
'face 'tabulated-list-fake-header))))
(defsubst tabulated-list-header-overlay-p (&optional pos)
"Return non-nil if there is a fake header.