Package: aptitude Version: 0.6.11-1 Severity: minor Dumb terminals only support a limited number of control codes. In particular they do not have the ability to process ANSI escape sequences which are commonly used for a number of aptitude's commands to display progress of steps.
As far as I can gather this is a matter of avoiding some of the conditionals in the switch statement in src/download_item.cc:77. The problematic cases are the “transient” states: StatIdle, StatFetching, and StatDone. This makes the output of the following command rather ugly: ~ % TERM=dumb aptitude update 0% [Working] Ign http://ppa.launchpad.net trusty InRelease 17% [Connecting to ftp.no.debian.org (2001:700:0:12e::f70)] Hit http://ppa.launchpad.net trusty Release.gpg 40% [Connecting to ftp.no.debian.org (2001:700:0:12e::f70)] Hit http://ppa.launchpad.net trusty Release 40% [Connecting to ftp.no.debian.org (2001:700:0:12e::f70)] 30% [Connecting to ftp.no.debian.org (2001:700:0:12e::f70)] Hit http://ppa.launchpad.net trusty/main Sources 40% [Connecting to ftp.no.debian.org (2001:700:0:12e::f70)] Hit http://ppa.launchpad.net trusty/main amd64 Packages 50% [Connecting to ftp.no.debian.org (2001:700:0:12e::f70)] [Waiting for headers Ign http://ppa.launchpad.net trusty/main Translation-en_US 60% [Waiting for headers] Ign http://ppa.launchpad.net trusty/main Translation-en 70% [Waiting for headers] Ign http://ppa.launchpad.net trusty/main Translation-en_GB 80% [Waiting for headers] Hit http://ftp.no.debian.org sid InRelease 80% [Working] 69% [Working] Hit http://ftp.no.debian.org sid/main Sources/DiffIndex 79% [Working] Hit http://ftp.no.debian.org sid/main amd64 Packages/DiffIndex 87% [Connecting to ftp.no.debian.org (2001:700:0:12e::f70)] Hit http://ftp.no.debian.org sid/main Translation-en/DiffIndex 94% [Working] [ 0%] Reading package lists [100%] Reading package lists The expected output should be what you see in an intelligent terminal: ~ % aptitude update Ign http://ppa.launchpad.net trusty InRelease Hit http://ppa.launchpad.net trusty Release.gpg Hit http://ppa.launchpad.net trusty Release Hit http://ppa.launchpad.net trusty/main Sources Hit http://ppa.launchpad.net trusty/main amd64 Packages Ign http://ppa.launchpad.net trusty/main Translation-en_US Ign http://ppa.launchpad.net trusty/main Translation-en Ign http://ppa.launchpad.net trusty/main Translation-en_GB Hit http://ftp.no.debian.org sid InRelease Hit http://ftp.no.debian.org sid/main Sources/DiffIndex Hit http://ftp.no.debian.org sid/main amd64 Packages/DiffIndex Hit http://ftp.no.debian.org sid/main Translation-en/DiffIndex -- Package-specific info: Terminal: dumb $DISPLAY is set. which aptitude: /usr/bin/aptitude aptitude version information: aptitude 0.6.11 compiled at Jun 9 2014 20:46:57 Compiler: g++ 4.8.3 Compiled against: apt version 4.12.0 NCurses version 5.9 libsigc++ version: 2.2.11 Gtk+ support disabled. Qt support disabled. Current library versions: NCurses version: ncurses 5.9.20140712 cwidget version: 0.5.17 Apt version: 4.12.0 aptitude linkage: linux-vdso.so.1 (0x00007fff8d9fe000) libapt-pkg.so.4.12 => /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12 (0x00007f18ac326000) libncursesw.so.5 => /lib/x86_64-linux-gnu/libncursesw.so.5 (0x00007f18ac0f0000) libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007f18abec5000) libsigc-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libsigc-2.0.so.0 (0x00007f18abcc0000) libcwidget.so.3 => /usr/lib/x86_64-linux-gnu/libcwidget.so.3 (0x00007f18ab9b9000) libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007f18ab6f7000) libboost_iostreams.so.1.55.0 => /usr/lib/x86_64-linux-gnu/libboost_iostreams.so.1.55.0 (0x00007f18ab4df000) libxapian.so.22 => /usr/lib/libxapian.so.22 (0x00007f18ab0d4000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f18aaeb6000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f18aabab000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f18aa8aa000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f18aa693000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f18aa2ea000) libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007f18aa0e7000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f18a9ee2000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f18a9cca000) libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f18a9aba000) liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f18a9896000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f18a968e000) libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f18a9488000) /lib64/ld-linux-x86-64.so.2 (0x00007f18accc3000) -- System Information: Debian Release: jessie/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 3.14-1-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages aptitude depends on: ii aptitude-common 0.6.11-1 ii libapt-pkg4.12 1.0.6 ii libboost-iostreams1.55.0 1.55.0+dfsg-2 ii libc6 2.19-7 ii libcwidget3 0.5.17-1 ii libgcc1 1:4.9.1-5 ii libncursesw5 5.9+20140712-2 ii libsigc++-2.0-0c2a 2.2.11-4 ii libsqlite3-0 3.8.5-2 ii libstdc++6 4.9.1-5 ii libtinfo5 5.9+20140712-2 ii libxapian22 1.2.18-1 Versions of packages aptitude recommends: pn aptitude-doc-en | aptitude-doc <none> pn libparse-debianchangelog-perl <none> ii sensible-utils 0.0.9 Versions of packages aptitude suggests: pn apt-xapian-index <none> pn debtags <none> ii tasksel 3.20 -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". 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