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Re: 23.0.50; Display bug with vline.el and viper

From: Vinicius Jose Latorre
Subject: Re: 23.0.50; Display bug with vline.el and viper
Date: Wed, 23 Jan 2008 16:49:13 -0300
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20071128 SeaMonkey/1.1.7

    Try to insert:

    (redisplay t)

    At the end of vline-show function.

If this is something magic, perhaps we need to document in the Lisp
manual the need for this.  Can someone propose a patch to the manual?

Maybe it is magic, but then the magic is not strong enough for this display bug. But maybe something like that function should be called internally for certain cases? Here it seems like wrapped lines are involved.

I've just tested vline.el with the fix above, and it works.

Probably Lennart inserted (redisplay t) inside the last while.

The problem is the following:

1. there are long lines (lines which go beyond window width) and one long line is at end of window (one part of the line is in the current window and the rest of line is in the next window);

2. when a scroll occurs (via next-line, for example), the vline-show is called during window scroll process;

3. vline-show changes the display while the display is being changed by window scroll, this gives some kind of conflict that (redisplay t) seems to fix.

Maybe the explanation is not so precise, but I hope it helps.

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