From: dana <dana@dana.is>
To: Daniel Shahaf <d.s@daniel.shahaf.name>
Cc: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: [RFC] Case-insensitive path completion in _git
Date: Sun, 28 Mar 2021 00:07:17 -0500 [thread overview]
Message-ID: <1C958552-603A-4716-8D4B-EF1EDA6D304F@dana.is> (raw)
In-Reply-To: <20210327210826.GJ18178@tarpaulin.shahaf.local2>
On 27 Mar 2021, at 16:08, Daniel Shahaf <d.s@daniel.shahaf.name> wrote:
> What about the default use-case — no matchspec and case-sensitive
> matching? The patch transforms a plain string to a list of character
> classes, and it's not clear to me what costs that might incur on large
> trees.
I recently learnt that ls-files actually does support case-insensitive
matching using the following syntax:
:(icase)/foo/bar/baz
Whether there might still be performance issues with it — i ran a quick test
against the Linux tree and it looks good enough to me, but idk how to make it
conclusive:
% hyperfine --warmup=3 \
"git ls-files -- ${(q)PWD}/'*Kbuild*'" \
"git ls-files -- ${(q)PWD}/'*[Kk][Bb][Uu][Ii][Ll][Dd]*'" \
"git ls-files -- ':(icase)'${(q)PWD}/'*kbuild*'"
Benchmark #1: git ls-files -- /home/dana/linux/'*Kbuild*'
Time (mean ± σ): 27.4 ms ± 0.9 ms [User: 18.5 ms, System: 8.8 ms]
Range (min … max): 26.0 ms … 31.9 ms 102 runs
Benchmark #2: git ls-files -- /home/dana/linux/'*[Kk][Bb][Uu][Ii][Ll][Dd]*'
Time (mean ± σ): 71.2 ms ± 1.0 ms [User: 62.9 ms, System: 8.2 ms]
Range (min … max): 70.1 ms … 76.0 ms 41 runs
Benchmark #3: git ls-files -- ':(icase)'/home/dana/linux/'*kbuild*'
Time (mean ± σ): 32.2 ms ± 0.6 ms [User: 23.1 ms, System: 9.1 ms]
Range (min … max): 30.7 ms … 33.9 ms 90 runs
Summary
'git ls-files -- /home/dana/linux/'*Kbuild*'' ran
1.18 ± 0.04 times faster than 'git ls-files -- ':(icase)'/home/dana/linux/'*kbuild*''
2.60 ± 0.09 times faster than 'git ls-files -- /home/dana/linux/'*[Kk][Bb][Uu][Ii][Ll][Dd]*''
It could still be gated behind a style if it's a concern.
dana
next prev parent reply other threads:[~2021-03-28 5:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-13 4:40 dana
2020-12-13 13:55 ` m0viefreak
2020-12-14 10:25 ` dana
2021-03-27 21:08 ` Daniel Shahaf
2021-03-28 5:07 ` dana [this message]
2021-03-28 8:08 ` Oliver Kiddle
2021-03-30 5:59 ` dana
2021-04-10 20:43 ` Lawrence Velázquez
2021-04-10 20:56 ` dana
2021-03-27 20:06 ` Lawrence Velázquez
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