debcrafters-packages team mailing list archive

[Mikko Rantalainen <2121228@xxxxxxxxxxxxxxxxxx>]

I assume that this is a bug in the implementation of tab completion of
command `find`. In addition to fixing the tab completion of this
command, the bash error diagnostics should be improved, too. It's next
to impossible for me to even figure out which file bash is trying to
process while the error happends.

-- 
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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/bash/+bug/2121228/+subscriptions