[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#32462: 26.1; Can `count-lines' be rewritten to use the newline cache
|
From: |
Phil Sainty |
|
Subject: |
bug#32462: 26.1; Can `count-lines' be rewritten to use the newline cache? |
|
Date: |
Sun, 19 Aug 2018 00:10:27 +1200 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
On 18/08/18 02:40, Eli Zaretskii wrote:
>> From: Phil Sainty <psainty@orcon.net.nz>
>> `count-lines' uses a regexp search to find all the newlines (and/or
>> carriage returns
>
> It uses regexp search only when selective-display is in effect, which
> means almost never. Otherwise, it uses forward-line, which uses
> scan_newline_from_point, which already uses the newline cache (unless
> the cache is disabled).
Ah, thanks Eli; I see that now. A look at the C code suggests that the
newline cache is also a more complicated arrangement than I'd imagined,
so I don't think my original thoughts about this were actually viable.
I'm closing this bug.