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writing a minor mode

From: R. Sean Bowman
Subject: writing a minor mode
Date: Wed, 2 Jun 2004 15:09:47 -0500 (CDT)


I use emacs to edit Python code, and I hate lines longer than 80
characters.  I'd like to write a minor mode that draws a vertical line or
darkens the character at the 80th spot, but I'm confused about how to do
that.  Should I use a bunch of overlays?  Is there some better way?  Any
help would be greatly appreciated.


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