Public bug reported:

The command /usr/bin/look prints only words that begin with an upper-
case letter, even if the search string begins with a lower-case letter.

$ look big
BigQuery
BigQuery's
Bigfoot
Bigfoot's
Biggles
Biggles's

This is incorrect behavior. "look" should also print words like big,
bigger, biggest.

$ grep '^big' /usr/share/dict/wordsbig
bigamist
bigamist's
bigamists
bigamous
...


Adding the -f option does not change the behavior.

Bug reproduced on two different Ubuntu 22.04 systems.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: bsdextrautils 2.37.2-4ubuntu3
ProcVersionSignature: Ubuntu 5.15.0-87.97-generic 5.15.122
Uname: Linux 5.15.0-87-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Wed Oct 25 20:36:39 2023
InstallationDate: Installed on 2020-02-29 (1334 days ago)
InstallationMedia: Kubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 
(20190805)
SourcePackage: util-linux
UpgradeStatus: Upgraded to jammy on 2022-12-03 (326 days ago)

** Affects: util-linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug jammy third-party-packages

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https://bugs.launchpad.net/bugs/2040936

Title:
  look command prints only words with capital first letter

Status in util-linux package in Ubuntu:
  New

Bug description:
  The command /usr/bin/look prints only words that begin with an upper-
  case letter, even if the search string begins with a lower-case
  letter.

  $ look big
  BigQuery
  BigQuery's
  Bigfoot
  Bigfoot's
  Biggles
  Biggles's

  This is incorrect behavior. "look" should also print words like big,
  bigger, biggest.

  $ grep '^big' /usr/share/dict/wordsbig
  bigamist
  bigamist's
  bigamists
  bigamous
  ...

  
  Adding the -f option does not change the behavior.

  Bug reproduced on two different Ubuntu 22.04 systems.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: bsdextrautils 2.37.2-4ubuntu3
  ProcVersionSignature: Ubuntu 5.15.0-87.97-generic 5.15.122
  Uname: Linux 5.15.0-87-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: KDE
  Date: Wed Oct 25 20:36:39 2023
  InstallationDate: Installed on 2020-02-29 (1334 days ago)
  InstallationMedia: Kubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 
(20190805)
  SourcePackage: util-linux
  UpgradeStatus: Upgraded to jammy on 2022-12-03 (326 days ago)

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https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/2040936/+subscriptions


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