From: Glenn Morris <rgm@gnu.org>
To: 11226@debbugs.gnu.org
Subject: bug#11226: format-mode-line, %z, mode-line-mule-info, and unibyte
Date: Wed, 11 Apr 2012 15:16:34 -0400 [thread overview]
Message-ID: <72ty0qf59p.fsf@fencepost.gnu.org> (raw)
Package: emacs
Version: 24.0.95
mode-line-mule-info contains this:
(propertize
"%z" 'help-echo [...]
(format "Buffer coding system %s\nmouse-1: describe coding system"
(if enable-multibyte-characters
(concat "(multi-byte): "
(symbol-name buffer-file-coding-system))
(concat "(unibyte): "
(symbol-name buffer-file-coding-system))))
The intent is obviously that you see (multibyte) in the mode-line
tooltip in a multibyte buffer, and (unibyte) otherwise.
However, you will never see the unibyte tooltip, because:
(set-buffer-multibyte nil)
(format-mode-line "%z")
-> ""
ie, the empty string, so there is nowhere for the help-echo to display.
Compare with "-" in multibyte buffers.
If it returned " " instead of "", you would see the tooltip.
next reply other threads:[~2012-04-11 19:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-11 19:16 Glenn Morris [this message]
2012-06-03 10:24 ` bug#11226: format-mode-line, %z, mode-line-mule-info, and unibyte Chong Yidong
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