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help about the display iterator.

From: A. Soare
Subject: help about the display iterator.
Date: Thu, 15 Jan 2009 19:21:46 +0100 (CET)


Please, can somebody make me a brief resume ( in a few words ) about how the 
`display iterator' works?

I saw that the low-level functions of the display of emacs there are called 
from `redisplay internal', which is called mainly from `redisplay' and from 

I did understand that every line is filled with glyphs in `display_line' using 
an interator structure.

However, I do not understand the mechanism from `redisplay_ineternal' (I have 
the impression that it's this function that creates the desired_matrix of 
glyphs) and refresh the display.

Thanks in advance.

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