[Bug 2111333] [NEW] apt shows escapes-sequences when coloring output

Andrew Aitchison 2111333 at bugs.launchpad.net
Tue May 20 13:25:53 UTC 2025 

Public bug reported:

# echo $TERM
xterm-256color
# apt show apt
ESC[1mPackage: ESC[0mESC[32maptESC[0m
ESC[1mVersion:ESC[0m 3.0.0
ESC[1mPriority:ESC[0m important
ESC[1mBuild-Essential:ESC[0m yes
ESC[1mSection:ESC[0m admin
ESC[1mOrigin:ESC[0m Ubuntu
ESC[1mMaintainer:ESC[0m Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
ESC[1mOriginal-Maintainer:ESC[0m APT Development Team <deity at lists.debian.org>
ESC[1mBugs:ESC[0m https://bugs.launchpad.net/ubuntu/+filebug
ESC[1mInstalled-Size: ESC[0m4,369 kB
ESC[1mProvides:ESC[0m apt-transport-https (= 3.0.0)
ESC[1mDepends:ESC[0m base-passwd (>= 3.6.1) | adduser, gpgv, libapt-pkg7.0 (>= 3.0.0), ubuntu-keyring, libc6 (>= 2.38), libgcc-s1 (>= 3.3.1), libseccomp2 (>= 2.4.2), libssl3t64 (>= 3.0.0), libstdc++6 (>= 13.1), libsystemd0
ESC[1mRecommends:ESC[0m ca-certificates
ESC[1mSuggests:ESC[0m apt-doc, aptitude | synaptic | wajig, dpkg-dev (>= 1.17.2), gnupg | gnupg2 | gnupg1, powermgmt-base
ESC[1mConflicts:ESC[0m apt-verify, libnettle8 (<< 3.9.1-2.2~)
ESC[1mBreaks:ESC[0m apt-transport-https (<< 1.5~alpha4~), apt-utils (<< 1.3~exp2~), aptitude (<< 0.8.10)
ESC[1mReplaces:ESC[0m apt-transport-https (<< 1.5~alpha4~), apt-utils (<< 1.3~exp2~)
ESC[1mTask:ESC[0m cloud-minimal, minimal, server-minimal
ESC[1mDownload-Size: ESC[0m1,440 kB
ESC[1mAPT-Manual-Installed: ESC[0myes
ESC[1mAPT-Sources: ESC[0mhttp://gb.archive.ubuntu.com/ubuntu plucky/main amd64 Packages
ESC[1mDescription: ESC[0mcommandline package manager
 This package provides commandline tools for searching and managing as well
 as querying information about packages as a low-level access to all
 features of the libapt-pkg library.
 .
 These include:
  * apt-get for retrieval of packages and information about them
    from authenticated sources and for installation, upgrade and
    removal of packages together with their dependencies
  * apt-cache for querying available information about installed
    as well as installable packages
  * apt-cdrom to use removable media as a source for packages
  * apt-config as an interface to the configuration settings
  * apt-extracttemplates is used by debconf to prompt for configuration
    questions before installation.

However with
   APT_NO_COLOR=yes apt show apt
the output is monochrome but unpolluted.

ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: apt 3.0.0
ProcVersionSignature: Ubuntu 6.14.0-15.15-generic 6.14.0
Uname: Linux 6.14.0-15-generic x86_64
ApportVersion: 2.32.0-0ubuntu5
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Tue May 20 14:15:59 2025
InstallationDate: Installed on 2018-12-01 (2362 days ago)
InstallationMedia: Lubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 LANG=en_GB.utf8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm
 XDG_RUNTIME_DIR=<set>
SourcePackage: apt
UpgradeStatus: Upgraded to plucky on 2020-11-06 (1656 days ago)
modified.conffile..etc.logrotate.d.apt: [modified]
mtime.conffile..etc.logrotate.d.apt: 2025-02-09T08:57:34.172479

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


** Tags: amd64 apport-bug plucky

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https://bugs.launchpad.net/bugs/2111333

Title:
  apt shows escapes-sequences when coloring output

Status in apt package in Ubuntu:
  New

Bug description:
  # echo $TERM
  xterm-256color
  # apt show apt
  ESC[1mPackage: ESC[0mESC[32maptESC[0m
  ESC[1mVersion:ESC[0m 3.0.0
  ESC[1mPriority:ESC[0m important
  ESC[1mBuild-Essential:ESC[0m yes
  ESC[1mSection:ESC[0m admin
  ESC[1mOrigin:ESC[0m Ubuntu
  ESC[1mMaintainer:ESC[0m Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
  ESC[1mOriginal-Maintainer:ESC[0m APT Development Team <deity at lists.debian.org>
  ESC[1mBugs:ESC[0m https://bugs.launchpad.net/ubuntu/+filebug
  ESC[1mInstalled-Size: ESC[0m4,369 kB
  ESC[1mProvides:ESC[0m apt-transport-https (= 3.0.0)
  ESC[1mDepends:ESC[0m base-passwd (>= 3.6.1) | adduser, gpgv, libapt-pkg7.0 (>= 3.0.0), ubuntu-keyring, libc6 (>= 2.38), libgcc-s1 (>= 3.3.1), libseccomp2 (>= 2.4.2), libssl3t64 (>= 3.0.0), libstdc++6 (>= 13.1), libsystemd0
  ESC[1mRecommends:ESC[0m ca-certificates
  ESC[1mSuggests:ESC[0m apt-doc, aptitude | synaptic | wajig, dpkg-dev (>= 1.17.2), gnupg | gnupg2 | gnupg1, powermgmt-base
  ESC[1mConflicts:ESC[0m apt-verify, libnettle8 (<< 3.9.1-2.2~)
  ESC[1mBreaks:ESC[0m apt-transport-https (<< 1.5~alpha4~), apt-utils (<< 1.3~exp2~), aptitude (<< 0.8.10)
  ESC[1mReplaces:ESC[0m apt-transport-https (<< 1.5~alpha4~), apt-utils (<< 1.3~exp2~)
  ESC[1mTask:ESC[0m cloud-minimal, minimal, server-minimal
  ESC[1mDownload-Size: ESC[0m1,440 kB
  ESC[1mAPT-Manual-Installed: ESC[0myes
  ESC[1mAPT-Sources: ESC[0mhttp://gb.archive.ubuntu.com/ubuntu plucky/main amd64 Packages
  ESC[1mDescription: ESC[0mcommandline package manager
   This package provides commandline tools for searching and managing as well
   as querying information about packages as a low-level access to all
   features of the libapt-pkg library.
   .
   These include:
    * apt-get for retrieval of packages and information about them
      from authenticated sources and for installation, upgrade and
      removal of packages together with their dependencies
    * apt-cache for querying available information about installed
      as well as installable packages
    * apt-cdrom to use removable media as a source for packages
    * apt-config as an interface to the configuration settings
    * apt-extracttemplates is used by debconf to prompt for configuration
      questions before installation.

  However with
     APT_NO_COLOR=yes apt show apt
  the output is monochrome but unpolluted.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.04
  Package: apt 3.0.0
  ProcVersionSignature: Ubuntu 6.14.0-15.15-generic 6.14.0
  Uname: Linux 6.14.0-15-generic x86_64
  ApportVersion: 2.32.0-0ubuntu5
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Tue May 20 14:15:59 2025
  InstallationDate: Installed on 2018-12-01 (2362 days ago)
  InstallationMedia: Lubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  ProcEnviron:
   LANG=en_GB.utf8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm
   XDG_RUNTIME_DIR=<set>
  SourcePackage: apt
  UpgradeStatus: Upgraded to plucky on 2020-11-06 (1656 days ago)
  modified.conffile..etc.logrotate.d.apt: [modified]
  mtime.conffile..etc.logrotate.d.apt: 2025-02-09T08:57:34.172479

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