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visible pixel margin as a visual cue


From: PT
Subject: visible pixel margin as a visual cue
Date: Wed, 29 Jun 2005 22:00:15 +0200
User-agent: Opera M2/8.0 (Win32, build 7561)

I saw this in other editors and wondered if emacs can do something like this. I found this page in the Emacs Wiki:

        http://www.emacswiki.org/cgi-bin/wiki/MarginMode

The picture at the bottom shows what I'd like: a visual cue to avoid writing too long lines (I know there's autofill). Unfortunately, this requires XWEM and the other solutions only add faces to characters in the buffers, so they don't actually draw a vertical line.

I think Emacs 21 can display graphics in a buffer, so I thought of something like putting a graphics overlay onto the buffer text. Can it be done with a standalone package (no XWEM)?

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