-;;; linum.el --- display line numbers in the left margin
+;;; linum.el --- display line numbers in the left margin -*- lexical-binding: t -*-
-;; Copyright (C) 2008 Free Software Foundation, Inc.
+;; Copyright (C) 2008-2014 Free Software Foundation, Inc.
;; Author: Markus Triska <markus.triska@gmx.at>
-;; Maintainer: FSF
+;; Maintainer: emacs-devel@gnu.org
;; Keywords: convenience
+;; Version: 0.9x
;; This file is part of GNU Emacs.
;;; Code:
-(defconst linum-version "0.9wx")
+(defconst linum-version "0.9x")
(defvar linum-overlays nil "Overlays used in this buffer.")
(defvar linum-available nil "Overlays available for reuse.")
"Show line numbers in the left margin."
:group 'convenience)
-;;;###autoload
(defcustom linum-format 'dynamic
"Format used to display line numbers.
Either a format string like \"%7d\", `dynamic' to adapt the width
argument and should evaluate to a string to be shown on that line.
See also `linum-before-numbering-hook'."
:group 'linum
- :type 'sexp)
+ :type '(choice (string :tag "Format string")
+ (const :tag "Dynamic width" dynamic)
+ (function :tag "Function")))
(defface linum
- '((t :inherit shadow))
+ '((t :inherit (shadow default)))
"Face for displaying line numbers in the display margin."
:group 'linum)
:group 'linum
:type 'boolean)
-(defcustom linum-delay t
+(defcustom linum-delay nil
"Delay updates to give Emacs a chance for other changes."
:group 'linum
:type 'boolean)
;;;###autoload
(define-minor-mode linum-mode
- "Toggle display of line numbers in the left margin."
+ "Toggle display of line numbers in the left margin (Linum mode).
+With a prefix argument ARG, enable Linum mode if ARG is positive,
+and disable it otherwise. If called from Lisp, enable the mode
+if ARG is omitted or nil.
+
+Linum mode is a buffer-local minor mode."
:lighter "" ; for desktop.el
(if linum-mode
(progn
'linum-update-current) nil t)
(add-hook 'after-change-functions 'linum-after-change nil t))
(add-hook 'window-scroll-functions 'linum-after-scroll nil t)
- ;; mistake in Emacs: window-size-change-functions cannot be local
- (add-hook 'window-size-change-functions 'linum-after-size)
+ ;; Using both window-size-change-functions and
+ ;; window-configuration-change-hook seems redundant. --Stef
+ ;; (add-hook 'window-size-change-functions 'linum-after-size nil t)
(add-hook 'change-major-mode-hook 'linum-delete-overlays nil t)
(add-hook 'window-configuration-change-hook
- 'linum-after-config nil t)
+ ;; FIXME: If the buffer is shown in N windows, this
+ ;; will be called N times rather than once. We should use
+ ;; something like linum-update-window instead.
+ 'linum-update-current nil t)
(linum-update-current))
(remove-hook 'post-command-hook 'linum-update-current t)
(remove-hook 'post-command-hook 'linum-schedule t)
- (remove-hook 'window-size-change-functions 'linum-after-size)
+ ;; (remove-hook 'window-size-change-functions 'linum-after-size t)
(remove-hook 'window-scroll-functions 'linum-after-scroll t)
(remove-hook 'after-change-functions 'linum-after-change t)
- (remove-hook 'window-configuration-change-hook 'linum-after-config t)
+ (remove-hook 'window-configuration-change-hook 'linum-update-current t)
(remove-hook 'change-major-mode-hook 'linum-delete-overlays t)
(linum-delete-overlays)))
(mapc #'delete-overlay linum-overlays)
(setq linum-overlays nil)
(dolist (w (get-buffer-window-list (current-buffer) nil t))
- (set-window-margins w 0)))
+ (set-window-margins w 0 (cdr (window-margins w)))))
(defun linum-update-current ()
"Update line numbers for the current buffer."
"Update line numbers for the portion visible in window WIN."
(goto-char (window-start win))
(let ((line (line-number-at-pos))
- (limit (1+ (window-end win t)))
+ (limit (window-end win t))
(fmt (cond ((stringp linum-format) linum-format)
((eq linum-format 'dynamic)
(let ((w (length (number-to-string
(count-lines (point-min) (point-max))))))
(concat "%" (number-to-string w) "d")))))
- (width 0)
- visited
- ov)
+ (width 0))
(run-hooks 'linum-before-numbering-hook)
;; Create an overlay (or reuse an existing one) for each
;; line visible in this window, if necessary.
(while (and (not (eobp)) (< (point) limit))
- (setq visited nil)
- (dolist (o (overlays-in (point) (point)))
- (when (eq (overlay-get o 'linum-line) line)
- (unless (memq o linum-overlays)
- (push o linum-overlays))
- (setq linum-available (delete o linum-available))
- (setq visited t)))
- (let ((str (if fmt
- (propertize (format fmt line) 'face 'linum)
- (funcall linum-format line))))
+ (let* ((str (if fmt
+ (propertize (format fmt line) 'face 'linum)
+ (funcall linum-format line)))
+ (visited (catch 'visited
+ (dolist (o (overlays-in (point) (point)))
+ (when (equal-including-properties
+ (overlay-get o 'linum-str) str)
+ (unless (memq o linum-overlays)
+ (push o linum-overlays))
+ (setq linum-available (delq o linum-available))
+ (throw 'visited t))))))
(setq width (max width (length str)))
(unless visited
- (if (null linum-available)
- (setq ov (make-overlay (point) (point)))
- (setq ov (pop linum-available))
- (move-overlay ov (point) (point)))
- (push ov linum-overlays)
- (setq str (propertize " " 'display `((margin left-margin) ,str)))
- (overlay-put ov 'before-string str)
- (overlay-put ov 'linum-line line)))
- (forward-line)
+ (let ((ov (if (null linum-available)
+ (make-overlay (point) (point))
+ (move-overlay (pop linum-available) (point) (point)))))
+ (push ov linum-overlays)
+ (overlay-put ov 'before-string
+ (propertize " " 'display `((margin left-margin) ,str)))
+ (overlay-put ov 'linum-str str))))
+ ;; Text may contain those nasty intangible properties, but that
+ ;; shouldn't prevent us from counting those lines.
+ (let ((inhibit-point-motion-hooks t))
+ (forward-line))
(setq line (1+ line)))
- (set-window-margins win width)))
+ (set-window-margins win width (cdr (window-margins win)))))
-(defun linum-after-change (beg end len)
+(defun linum-after-change (beg end _len)
;; update overlays on deletions, and after newlines are inserted
(when (or (= beg end)
(= end (point-max))
(string-match-p "\n" (buffer-substring-no-properties beg end)))
(linum-update-current)))
-(defun linum-after-scroll (win start)
+(defun linum-after-scroll (win _start)
(linum-update (window-buffer win)))
-(defun linum-after-size (frame)
- (linum-after-config))
+;; (defun linum-after-size (frame)
+;; (linum-after-config))
(defun linum-schedule ()
;; schedule an update; the delay gives Emacs a chance for display changes
(run-with-idle-timer 0 nil #'linum-update-current))
-(defun linum-after-config ()
- (walk-windows (lambda (w) (linum-update (window-buffer w))) nil 'visible))
+;; (defun linum-after-config ()
+;; (walk-windows (lambda (w) (linum-update (window-buffer w))) nil 'visible))
(defun linum-unload-function ()
"Unload the Linum library."
(provide 'linum)
-;; arch-tag: dea45631-ed3c-4867-8b49-1c41c80aec6a
;;; linum.el ends here
HCoop / bpt / emacs.git / blobdiff