From 60d3008e839218b3c2de242588a98da2ad532e52 Mon Sep 17 00:00:00 2001 From: Glenn Morris Date: Sat, 1 Mar 2008 20:31:09 +0000 Subject: [PATCH] More info on how to replace make-variable-frame-local. --- etc/NEWS.22 | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/etc/NEWS.22 b/etc/NEWS.22 index c97ec91fb51..5778e56ca26 100644 --- a/etc/NEWS.22 +++ b/etc/NEWS.22 @@ -135,7 +135,15 @@ because they clash with commands provided by dirtrack.el. Use * Lisp Changes in Emacs 22.2. ** Frame-local variables are deprecated and are slated for removal. -Use frame parameters instead. +They can easily be emulated. Rather than calling `make-variable-frame-local' +and accessing the variable value directly, explicitly check for a +frame-parameter, and if there is one, use its value in preference to +that of the variable. Eg: +(let ((fp (assoc 'var (frame-parameters)))) + ;; Use frame-parameter, even if nil. + (if fp (cdr fp) + ;; Else use normal variable value. + var)) ** The function invisible-p returns non-nil if the character after a specified position is invisible. -- 2.11.4.GIT