Package: zstd Version: 1.5.7+dfsg-4 X-Debbugs-CC: [email protected] Dear Maintainer,
zstd seems to ignore the --format= option when doing decompression or testing archives: $ head -c32 /dev/zero | gzip -c | zstd -dc --format=xz | xxd 00000000: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 00000010: 0000 0000 0000 0000 0000 0000 0000 0000 ................ $ head -c32 /dev/zero | gzip -c | zstd -tc --format=xz; echo $? /*stdin*\ : 32 bytes 0 Compare to xz which returns an error for a similar case: $ head -c32 /dev/zero | xz -c | xz -dc --format=lzma; echo $? xz: (stdin): File format not recognized 1 >From the zstd manual page it's clear the option is meant to apply to decompression as well: --format=FORMAT: compress and decompress in other formats. If compiled with support, zstd can compress to or decompress from other compres‐ sion algorithm formats. Possibly available options are zstd, gzip, xz, lzma, and lz4. If no such format is provided, zstd is the default. Properly returning an error when trying to decompress as a wrong format instead of decompressing as an auto-detected correct format would help scripts which try to figure out which compression scheme was used to create an archive. -- System Information: Debian Release: forky/sid APT prefers buildd-unstable APT policy: (500, 'buildd-unstable'), (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: arm64, armhf, i386 Kernel: Linux 7.1.8+deb14.1-amd64 (SMP w/8 CPU threads; PREEMPT) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages zstd depends on: ii libc6 2.43-3 ii libgcc-s1 16.2.0-1 ii liblz4-1 1.10.0-10 ii liblzma5 5.8.3-1 ii libstdc++6 16.2.0-1 ii zlib1g 1:1.3.dfsg+really1.3.2-3 zstd recommends no packages. zstd suggests no packages. -- no debconf information
