GNU bug report logs - #5809
23.1.94; cross-reference by anchor yields in accurate position

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From: Eli Zaretskii <eliz <at> gnu.org>
To: juri <at> jurta.org, 5809 <at> debbugs.gnu.org
Subject: bug#5809: 23.1.94; cross-reference by anchor yields in accurate position
Date: Thu, 01 Apr 2010 23:49:49 +0300

> Date: Thu, 01 Apr 2010 23:22:41 +0300
> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: 5809 <at> debbugs.gnu.org
> 
> For the trunk, isn't it true that the function which actually goes to
> a location is Info-find-node-2, and that all the others call it?  If
> so, this is the main place to account for the inserted breadcrumbs.
> We could maintain in some data structure the buffer positions and
> length of each breadcrumbs line we insert, and then use that data
> structure in Info-find-node-2 to compute the summary offset to be
> applied in the current node.

Here's another, perhaps better idea: how about if, instead of
inserting breadcrumbs as text into the buffer, we put an overlay there
with a display property whose value is the breadcrumbs as a string?
This way, buffer positions are not affected at all.

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