Package: bash Version: 5.0-5 Severity: normal Tags: upstream Dear Maintainer,
With a really specific procedure I'm able to reproduce an issue I'm having ~weekly: - Move ~/.bashrc elsewhere just to start clean - Start a new terminal (in my case tput cols tells it's 79 columns, beware, the bug varies according to the terminal width). - run `bash --norc` in it, to start clean - Prompt in my case is `bash-5.0$ `, beware, the bug varies according to the length of the prompt. - type `printf "Hello World\n "` (1) - hit the `uparrow` of your keyboard to see the printf again (2) - hit C-a (bash shortcut for beginning-of-line) (3) After (1) you should see (I'm using ■ to mark the place of the cursor): bash-5.0$ printf "Hello World\n Hello World bash-5.0$ ■ After (2) you should see: bash-5.0$ printf "Hello World\n " Hello World bash-5.0$ printf "Hello World\n "■ After (3) you should see: bash-5.0$ printf "Hello World\n " Hello World ■ bash-5.0$ printf "Hello World\n " The point should not go that far, it should stop on the `p` of `printf`. I straced and played a bit with, and noted a few interesting things: - Bug appear, or not, depending on the length of the prompt - Bug appear, or not, depending on the width of the terminal - When beginning-of-line calls `write(2, "\r\33[C\33[C\33[C\33[C\33[C...` I have the bug - When beginning-of-line calls `write(2, "\10\10\10\10\10\10\10\10\10...` I don't have the bug -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 5.3.0-3-amd64 (SMP w/16 CPU cores) Kernel taint flags: TAINT_WARN Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages bash depends on: ii base-files 11 ii debianutils 4.9.1 ii libc6 2.29-3 ii libtinfo6 6.1+20191019-1 Versions of packages bash recommends: ii bash-completion 1:2.8-6 Versions of packages bash suggests: pn bash-doc <none> -- no debconf information