From: Devste Devste <devstemail@gmail.com>
Date: Fri, 03 Oct 2025 11:05:17 GMT
Subject: Untracked files cache not used when --untracked-files is used
Message-ID: <CANM0SV3+4k5tsgRw0g8-HoVSFGb1AwZr+2hCUXLriFGSd33WQQ@mail.gmail.com>

I am using:
git version 2.51.0.windows.1

Run:
time git status --untracked-files

I get:
It took 2.75 seconds to enumerate untracked files,
but the results were cached, and subsequent runs may be faster.
See 'git help status' for information on how to improve this.

real    0m2.959s
user    0m0.000s
sys     0m0.000s

---

when I run it again, I get the same thing again

However, when I run it again WITHOUT --untracked-files its much faster now:
real    0m0.753s
user    0m0.000s
sys     0m0.015s

which means that the untracked cache does work (bc deleting the
untracked cache, it will be slow and also show the message)
per the docs:
>When -u option is not used, untracked files and directories are shown (i.e. the same as specifying normal)

Which I can confirm also with:
git update-index --test-untracked-cache
>Testing mtime in 'C:/Foo/bar' ...... OK

It seems that using --untracked-files(=all) causes it to either not
use the untracked files cache (or untracked files are not stored in
the untracked files cache if they are in an untracked directory?)
Since various tools and IDEs use that hardcoded, fixing this would be
a massive performance boost for many users