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bug#45652: so-long mode not triggered despite big file with very long li
From: |
Phil Sainty |
Subject: |
bug#45652: so-long mode not triggered despite big file with very long lines |
Date: |
Tue, 12 Jan 2021 15:42:37 +1300 |
User-agent: |
Orcon Webmail |
On 12/01/21 7:39 am, Lars Ingebrigtsen wrote:
Have you considered adding a C-level primitive that just looks at the
entire buffer? It should be reasonably simple and very fast -- just
count areas between "\n"s, skipping the buffer gap. We don't have to
care about characters as such, I think, so this should be massively
faster than counting line lengths in Lisp.
FYI, this also triggered a memory from several years ago:
https://lists.gnu.org/archive/html/emacs-devel/2016-07/msg00761.html
Stefan's thought at the time was:
I wonder if we could improve the detection part with some help from
the C code. I'm thinking of trying to keep track of "the last \n
before point" and calling a hook whenever this is larger than a
threshold.
I never followed up on that (I ended up shelving the idea of releasing
so-long.el for a couple of years or so, as my own use-cases at the
time turned out to be due to one specific badly-behaved library which
had already been fixed upstream, so for a while I thought it might not
be as useful as I'd originally thought).
On 2021-01-12 10:07, Lars Ingebrigtsen wrote:
I can give writing something like that a shot... It could return,
say,
the length of the longest line, and the number of lines? The median
line length would be nice, but would be slower.
Mean would be easy, and standard deviation would be possible (but
require two passes, I guess?)
I'm not sure that so-long itself would find it useful to know any kind
of averages, but longest line is obviously useful, and the number of
lines sounds more or less like a freebie, and might be useful too.
-Phil
- bug#45652: so-long mode not triggered despite big file with very long lines, (continued)
bug#45652: so-long mode not triggered despite big file with very long lines, Lars Ingebrigtsen, 2021/01/11
- bug#45652: so-long mode not triggered despite big file with very long lines, Phil Sainty, 2021/01/11
- bug#45652: so-long mode not triggered despite big file with very long lines, Lars Ingebrigtsen, 2021/01/11
- bug#45652: so-long mode not triggered despite big file with very long lines, Lars Ingebrigtsen, 2021/01/11
- bug#45652: so-long mode not triggered despite big file with very long lines,
Phil Sainty <=
- bug#45652: so-long mode not triggered despite big file with very long lines, Lars Ingebrigtsen, 2021/01/12
- bug#45652: so-long mode not triggered despite big file with very long lines, Eli Zaretskii, 2021/01/12
- bug#45652: so-long mode not triggered despite big file with very long lines, Lars Ingebrigtsen, 2021/01/12
- bug#45652: so-long mode not triggered despite big file with very long lines, Eli Zaretskii, 2021/01/12
- bug#45652: so-long mode not triggered despite big file with very long lines, Lars Ingebrigtsen, 2021/01/12
bug#45652: so-long mode not triggered despite big file with very long lines, Lars Ingebrigtsen, 2021/01/12
bug#45652: so-long mode not triggered despite big file with very long lines, Phil Sainty, 2021/01/12
bug#45652: so-long mode not triggered despite big file with very long lines, Eli Zaretskii, 2021/01/11
bug#45652: so-long mode not triggered despite big file with very long lines, Lars Ingebrigtsen, 2021/01/12