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Re: redisplay - very long lines

From: David Reitter
Subject: Re: redisplay - very long lines
Date: Wed, 18 Feb 2009 14:50:11 -0500

On 18 Feb 2009, at 14:44, Stefan Monnier wrote:

We're proposing to stop processing a buffer line when we have left
the portion of the buffer that is currently visible in the window.
I think Emacs already does that, but I might be mistaken.

If it does, then the performance issue is elsewhere.

Here's the profiler output again:

0.0% 99.8% Emacs redisplay_window 0.0% 99.8% Emacs move_it_vertically_backward 0.0% 62.3% Emacs move_it_to 8.9% 62.0% Emacs move_it_in_display_line_to 14.2% 30.5% Emacs x_produce_glyphs

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