From 916119ec9eecb97a2834896d80b286ddb9cf423c Mon Sep 17 00:00:00 2001 From: Xue Fuqiao Date: Tue, 13 Aug 2013 10:45:12 +0800 Subject: [PATCH] * doc/lispref/frames.texi (Display Feature Testing): Add indexes. --- doc/lispref/ChangeLog | 2 +- doc/lispref/frames.texi | 1 + lisp/frame.el | 2 ++ 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog index cd39f44fc98..29ab28c0fad 100644 --- a/doc/lispref/ChangeLog +++ b/doc/lispref/ChangeLog @@ -1,6 +1,6 @@ 2013-08-13 Xue Fuqiao - * frames.texi (Display Feature Testing): Add an index. + * frames.texi (Display Feature Testing): Add indexes. 2013-08-12 Glenn Morris diff --git a/doc/lispref/frames.texi b/doc/lispref/frames.texi index 00cf4dc6be4..370098c8b62 100644 --- a/doc/lispref/frames.texi +++ b/doc/lispref/frames.texi @@ -2403,6 +2403,7 @@ Values can be the symbols @code{always}, @code{when-mapped}, or when the question is inapplicable to a certain kind of display. @end defun +@cindex SaveUnder feature @defun display-save-under &optional display This function returns non-@code{nil} if the display supports the SaveUnder feature. That feature is used by pop-up windows diff --git a/lisp/frame.el b/lisp/frame.el index 31a9123503d..79394bd305b 100644 --- a/lisp/frame.el +++ b/lisp/frame.el @@ -1442,6 +1442,8 @@ monitor, use `display-monitor-attributes-list'." (declare-function x-display-backing-store "xfns.c" (&optional terminal)) +;; In NS port, the return value may be `buffered', `retained', or +;; `non-retained'. See src/nsfns.m. (defun display-backing-store (&optional display) "Return the backing store capability of DISPLAY's screen. The value may be `always', `when-mapped', `not-useful', or nil if -- 2.39.2