Permalink
Switch branches/tags
Nothing to show
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
57 lines (38 sloc) 1.6 KB

Build Status

Overview

Find the last visible point in an Emacs window.

Quickstart

(require 'window-end-visible)
 
;; open a buffer larger than the window
 
;; may return nil
(pos-visible-in-window-p (window-end))
 
;; always returns t
(pos-visible-in-window-p (window-end-visible))

Explanation

window-end-visible.el has no user-level interface, and is only useful when programming Emacs Lisp.

This library provides the function window-end-visible, which works around a limitation of window-end, at a speed penalty.

The issue this function solves is that the following is not true as might be expected:

(pos-visible-in-window-p (window-end))

window-end-visible returns the "true" window end: the last visible position in the window, verified by testing with pos-visible-in-window-p.

The speed penalty of window-end-visible over window-end varies depending on your configuration. For example, tabbar.el makes calling pos-visible-in-window-p quite expensive.

Compatibility and Requirements

GNU Emacs version 24.4-devel     : yes, at the time of writing
GNU Emacs version 24.3           : yes
GNU Emacs version 23.3           : yes
GNU Emacs version 22.2           : yes, with some limitations
GNU Emacs version 21.x and lower : unknown

No external dependencies