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From: "Drew Adams" <drew.adams@oracle.com>
To: <emacs-devel@gnu.org>
Subject: mode-line-format - local variableness
Date: Sun, 5 Apr 2009 15:18:37 -0700	[thread overview]
Message-ID: <004901c9b63c$77c768e0$0200a8c0@us.oracle.com> (raw)

(defun foo (text &optional buffer)
  "Display TEXT in BUFFER's mode line for 2 sec."
  (with-current-buffer (or buffer (current-buffer))
    (let ((mode-line-format  text))
      (force-mode-line-update) (sit-for 2))
    (force-mode-line-update)))

M-: (foo "JJJJJ" "*scratch*")

In Emacs 20, JJJJJ is displayed in the mode-line of buffer *scratch* only. The
mode lines of other buffers are unaffected.

In Emacs 21 and later, *each* buffer's mode-line shows JJJJJ.

What am I missing? `mode-line-format' is a buffer-local variable. That makes me
think the Emacs 20 behavior is correct and the behavior since then is incorrect.
I assume I must be missing something here. Can someone please clue me in? Thx.





             reply	other threads:[~2009-04-05 22:18 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-05 22:18 Drew Adams [this message]
2009-04-05 22:50 ` mode-line-format - local variableness Johan Bockgård
2009-04-05 23:24   ` Miles Bader
2009-04-05 23:29   ` Drew Adams
2009-04-05 23:37     ` Drew Adams
2009-04-06  0:50       ` Miles Bader
2009-04-06  3:05         ` Drew Adams
2009-04-06  1:37 ` Stefan Monnier
2009-04-06  3:19   ` Drew Adams
2009-04-06 13:30     ` Stefan Monnier
2009-04-06 21:37       ` Miles Bader

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