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bug#12867: 24.3.50; easy-to-repro crash involving mode line
From: |
martin rudalics |
Subject: |
bug#12867: 24.3.50; easy-to-repro crash involving mode line |
Date: |
Mon, 12 Nov 2012 18:31:53 +0100 |
> The need to redisplay the mode line on every move of point is a killer
> of many redisplay optimizations. It is also potentially expensive by
> itself, because it requires Emacs to count lines, something that is
> not an easy operation in Emacs, which sees the buffer text as a linear
> array of characters, not a series of lines. So the display engine
> tries very hard to avoid redisplaying the mode line if it decides that
> the line number does not need to appear.
I think it would make sense to use a cache for maintaining line numbers.
martin
bug#12867: 24.3.50; easy-to-repro crash involving mode line,
martin rudalics <=
- bug#12867: 24.3.50; easy-to-repro crash involving mode line, Eli Zaretskii, 2012/11/12
- bug#12867: 24.3.50; easy-to-repro crash involving mode line, Stefan Monnier, 2012/11/12
- bug#12867: 24.3.50; easy-to-repro crash involving mode line, martin rudalics, 2012/11/13
- bug#12867: 24.3.50; easy-to-repro crash involving mode line, Eli Zaretskii, 2012/11/13
- bug#12867: 24.3.50; easy-to-repro crash involving mode line, martin rudalics, 2012/11/13