[Bug 2154042] Re: ls: files are not sorted in alphabetical order when using --group-directories-first or if LC_ALL is unset

[Harm van Bakel]

And for reference, this is what the locale command returns on my system:

LANG=en_US.UTF-8
LANGUAGE=
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

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https://bugs.launchpad.net/bugs/2154042

Title:
  ls: files are not sorted in alphabetical order when using --group-
  directories-first or if LC_ALL is unset

Status in rust-coreutils:
  Unknown
Status in rust-coreutils package in Ubuntu:
  New

Bug description:
  Since upgrading from Noble 24.04 to Resolute 26.04, files and folders
  are not sorted in proper alphabetical order when running ls --group-
  directories-first in Ptyxis. The sort order appears roughly
  alphabetical but with many exceptions, and there is no obvious pattern
  to explain the deviations. Casing does not appear to be a factor
  either.

  I tried switching locales but the following give incorrect sort
  results:

  LC_ALL=C /usr/bin/ls -hlF --group-directories-first
  LC_ALL=en_US.UTF-8 /usr/bin/ls -hlF --group-directories-first

  Switching to gnuls restores proper alphabetical sorting.

  ---

  ProblemType: Bug
  DistroRelease: Ubuntu 26.04
  Package: rust-coreutils 0.8.0-0ubuntu3
  ProcVersionSignature: Ubuntu 7.0.0-17.17-generic 7.0.2
  Uname: Linux 7.0.0-17-generic x86_64
  ApportVersion: 2.34.0-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Fri May 22 14:10:52 2026
  InstallationDate: Installed on 2020-07-06 (2146 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: rust-coreutils
  UpgradeStatus: Upgraded to resolute on 2026-05-06 (16 days ago)

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