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Re: vbb-mode for GNU Emacs
From: |
lawrence mitchell |
Subject: |
Re: vbb-mode for GNU Emacs |
Date: |
Thu, 05 Sep 2002 13:20:33 +0100 |
User-agent: |
Gnus/5.090007 (Oort Gnus v0.07) Emacs/21.2.90 (i386-mingw-windows98.2222) |
Ludwig Weinzierl wrote:
> Hello,
> there is a minor-mode for X-Emacs called vvb-mode which shows a
> vertikal bar in a certain column (eg column 72).
> Sadly it works only with X-Emacs.
> 1. Is there a similar package for GNU Emacs?
> 2. Does anyone know of version of vbb-mode.el for GNU Emacs?
> 3. Has anyone an idea how to get this part of code working with GNU
> emacs?
GNU Emacs uses overlays rather than extents, (which, I believe, are
somewhat less efficient, however, no matter). Hence, you have to
change two functions in vvb-mode. `vvb-show' and `vvb-hide'.
If you replace `vvb-hide' with the following definition:
`cl-map-overlays' is part of the cl package which ships with Emacs.
(defun vvb-hide ()
"Hide the transient visual vertical bar if any."
(if vvb-visible-p
(progn (setq vvb-visible-p nil)
(cl-map-overlays #'(lambda (overlay dummy)
(delete-overlay overlay))
nil nil nil 'vvb))))
[...]
> (set-extent-properties (make-extent b e)
> (list 'face vvb-face
> 'vvb t))
Change these lines to:
(let ((overlay (make-overlay b e)))
(overlay-put overlay 'face vvb-face)
(overlay-put overlay 'vvb t))
[...]
--
lawrence mitchell <wence@gmx.li>