debcrafters-packages team mailing list archive

[Mikko Rantalainen <2121228@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Steps to reproduce (minimal test case):

Type following command without actually running it (copy pasting this
text is okay):

    find -type f -exec echo {} +

move cursor to location after `find` and type something (e.g. "_") and
press tab. The result should be

    find _[TAB HERE] -type f -exec echo {} +

which should result in bash completion showing directories that start
with an underscore. Instead of that we get the current line overwritten
with the error message

    bash: COMP_POINT: substring expression < 0

and the prompt is reset to empty string.

The trigger for this bug seems to be the `-exec` part of the command. If
you replace that with `-print` and keep everything else as-is, the tab
completion works as expected (even though `-print echo {} +` makes no
sense as argument to `find`).

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: bash 5.1-6ubuntu1.1
ProcVersionSignature: Ubuntu 6.8.0-65.68.1~22.04.1-lowlatency 6.8.12
Uname: Linux 6.8.0-65-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.10
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: XFCE
Date: Fri Aug 22 17:24:53 2025
EcryptfsInUse: Yes
InstallationDate: Installed on 2019-01-05 (2420 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: bash
UpgradeStatus: Upgraded to jammy on 2023-08-11 (742 days ago)
modified.conffile..etc.init.d.apport: [modified]
mtime.conffile..etc.init.d.apport: 2025-05-30T10:33:32.233549

** Affects: bash (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug jammy

-- 
You received this bug notification because you are a member of
Debcrafters packages, which is subscribed to bash in Ubuntu.
https://bugs.launchpad.net/bugs/2121228

Title:
  tab completion fails with "bash: COMP_POINT: substring expression < 0"

Status in bash package in Ubuntu:
  New

Bug description:
  Steps to reproduce (minimal test case):

  Type following command without actually running it (copy pasting this
  text is okay):

      find -type f -exec echo {} +

  move cursor to location after `find` and type something (e.g. "_") and
  press tab. The result should be

      find _[TAB HERE] -type f -exec echo {} +

  which should result in bash completion showing directories that start
  with an underscore. Instead of that we get the current line
  overwritten with the error message

      bash: COMP_POINT: substring expression < 0

  and the prompt is reset to empty string.

  The trigger for this bug seems to be the `-exec` part of the command.
  If you replace that with `-print` and keep everything else as-is, the
  tab completion works as expected (even though `-print echo {} +` makes
  no sense as argument to `find`).

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: bash 5.1-6ubuntu1.1
  ProcVersionSignature: Ubuntu 6.8.0-65.68.1~22.04.1-lowlatency 6.8.12
  Uname: Linux 6.8.0-65-lowlatency x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82.10
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: XFCE
  Date: Fri Aug 22 17:24:53 2025
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2019-01-05 (2420 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  RebootRequiredPkgs: Error: path contained symlinks.
  SourcePackage: bash
  UpgradeStatus: Upgraded to jammy on 2023-08-11 (742 days ago)
  modified.conffile..etc.init.d.apport: [modified]
  mtime.conffile..etc.init.d.apport: 2025-05-30T10:33:32.233549

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