[Bug 2128894] [NEW] dirname skip last "/." current directory

[Devaucoup Théo]

Public bug reported:

I think have found a regression on "dirname" executable.

/usr/bin/gnudirname /path/to/test/.
returns /path/to/test
whereas
/usr/lib/cargo/bin/coreutils/dirname /path/to/test/.
returns /path/to

It leads to configuration bugs in script for example.

lsb_release -rd
Description:	Ubuntu 25.10
Release:	25.10

apt-cache policy  rust-coreutils
rust-coreutils:
  Installé : 0.2.2-0ubuntu2
  Candidat : 0.2.2-0ubuntu2
 Table de version :
 *** 0.2.2-0ubuntu2 500
        500 http://fr.archive.ubuntu.com/ubuntu questing/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: rust-coreutils 0.2.2-0ubuntu2
ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
Uname: Linux 6.17.0-5-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 18 17:07:18 2025
ProcEnviron:
 LANG=fr_FR.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: rust-coreutils
UpgradeStatus: Upgraded to questing on 2025-10-11 (7 days ago)

** Affects: rust-coreutils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug questing wayland-session

** Description changed:

- I think I found a regression on "dirname" executable.
+ I think have found a regression on "dirname" executable.
  
  /usr/bin/gnudirname /path/to/test/.
  returns /path/to/test
  whereas
  /usr/lib/cargo/bin/coreutils/dirname /path/to/test/.
  returns /path/to
  
  It leads to configuration bugs in script for example.
  
- 
  lsb_release -rd
  Description:	Ubuntu 25.10
  Release:	25.10
  
  apt-cache policy  rust-coreutils
  rust-coreutils:
-   Installé : 0.2.2-0ubuntu2
-   Candidat : 0.2.2-0ubuntu2
-  Table de version :
-  *** 0.2.2-0ubuntu2 500
-         500 http://fr.archive.ubuntu.com/ubuntu questing/main amd64 Packages
-         100 /var/lib/dpkg/status
+   Installé : 0.2.2-0ubuntu2
+   Candidat : 0.2.2-0ubuntu2
+  Table de version :
+  *** 0.2.2-0ubuntu2 500
+         500 http://fr.archive.ubuntu.com/ubuntu questing/main amd64 Packages
+         100 /var/lib/dpkg/status
  
  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: rust-coreutils 0.2.2-0ubuntu2
  ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
  Uname: Linux 6.17.0-5-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Oct 18 17:07:18 2025
  ProcEnviron:
-  LANG=fr_FR.UTF-8
-  PATH=(custom, no user)
-  SHELL=/bin/bash
-  TERM=xterm-256color
-  XDG_RUNTIME_DIR=<set>
+  LANG=fr_FR.UTF-8
+  PATH=(custom, no user)
+  SHELL=/bin/bash
+  TERM=xterm-256color
+  XDG_RUNTIME_DIR=<set>
  SourcePackage: rust-coreutils
  UpgradeStatus: Upgraded to questing on 2025-10-11 (7 days ago)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to rust-coreutils in Ubuntu.
https://bugs.launchpad.net/bugs/2128894

Title:
  dirname skip last "/." current directory

Status in rust-coreutils package in Ubuntu:
  New

Bug description:
  I think have found a regression on "dirname" executable.

  /usr/bin/gnudirname /path/to/test/.
  returns /path/to/test
  whereas
  /usr/lib/cargo/bin/coreutils/dirname /path/to/test/.
  returns /path/to

  It leads to configuration bugs in script for example.

  lsb_release -rd
  Description:	Ubuntu 25.10
  Release:	25.10

  apt-cache policy  rust-coreutils
  rust-coreutils:
    Installé : 0.2.2-0ubuntu2
    Candidat : 0.2.2-0ubuntu2
   Table de version :
   *** 0.2.2-0ubuntu2 500
          500 http://fr.archive.ubuntu.com/ubuntu questing/main amd64 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: rust-coreutils 0.2.2-0ubuntu2
  ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
  Uname: Linux 6.17.0-5-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Oct 18 17:07:18 2025
  ProcEnviron:
   LANG=fr_FR.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: rust-coreutils
  UpgradeStatus: Upgraded to questing on 2025-10-11 (7 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/rust-coreutils/+bug/2128894/+subscriptions