Protect against changes of interval tree when adding/removing text props.

[gnu-emacs] / lisp / linum.el

diff --git a/lisp/linum.el b/lisp/linum.el
index b7e69e2a7c646d605efc28f0c2943718635685c1..d9d7e5ad120e5355d66b64eaee9dbbad620d96b9 100644 (file)
--- a/lisp/linum.el
+++ b/lisp/linum.el
@@ -1,10 +1,11 @@
-;;; linum.el --- display line numbers in the left margin
+;;; linum.el --- display line numbers in the left margin -*- lexical-binding: t -*-
 
-;; Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+;; Copyright (C) 2008-2013 Free Software Foundation, Inc.
 
 ;; Author: Markus Triska <markus.triska@gmx.at>
 ;; Maintainer: FSF
 ;; Keywords: convenience
+;; Version: 0.9x
 
 ;; This file is part of GNU Emacs.
 
@@ -43,7 +44,6 @@
   "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
@@ -51,7 +51,9 @@ as needed, or a function that is called with a line number as its
 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 default)))
@@ -72,7 +74,12 @@ and you have to scroll or press \\[recenter-top-bottom] to update the numbers."
 
 ;;;###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
@@ -173,14 +180,14 @@ and you have to scroll or press \\[recenter-top-bottom] to update the numbers."
       (setq line (1+ line)))
     (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)
@@ -201,5 +208,4 @@ and you have to scroll or press \\[recenter-top-bottom] to update the numbers."
 
 (provide 'linum)
 
-;; arch-tag: dea45631-ed3c-4867-8b49-1c41c80aec6a
 ;;; linum.el ends here