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bug#15555: Re: bug#15555: 24.3; Bidirectional display very slow with lon


From: Eli Zaretskii
Subject: bug#15555: Re: bug#15555: 24.3; Bidirectional display very slow with long lines
Date: Thu, 20 Feb 2014 19:44:17 +0200

> Date: Tue, 18 Feb 2014 18:31:22 +0400
> From: Dmitry Antipov <address@hidden>
> Cc: address@hidden
> 
> Now I'm seeing the use case where each trivial cursor movement causes
> ~100 calls to bidi_shelve_cache, and each call copies ~1.5M of data.

Starting with revision 116494, bidi_shelve_cache should be called much
less, normally just once and sometimes twice per call to
move_it_in_display_line_to.

This doesn't solve the original bug, so the cursor will occasionally
still get stuck in that 4000.txt file, but at least it will do that
with much less noise.





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