Date: Thu, 08 Jan 2026 12:50:44 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 259197] xzgrep should present a message when fed a non-recognised file format Message-ID: <bug-259197-227-JFHqk5EdTD@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-259197-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259197 Daniel Tameling <tamelingdaniel@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tamelingdaniel@gmail.com --- Comment #9 from Daniel Tameling <tamelingdaniel@gmail.com> --- (In reply to Craig Leres from comment #5) I don't think it is a good idea to remove the -f flag from the wrapper script. Quoting the xz man page: "When used with --decompress --stdout and xz cannot recognize the type of the source file, copy the source file as is to standard output. This allows xzcat --force to be used like cat(1) for files that have not been compressed with xz." So currently you can search normal files simultaneously with xz archives with a single command. E.g. if one uses xz to compress /var/log/messages one can use xzgrep harfbuzz /var/log/messages* to search all files. Without the flag one would get the warnings for the non-xz files, but they wouldn't be passed to stdout. The upstream xzgrep file also uses the -f flag, so changing it in base would reduce the portability of scripts. However, upstream has a way to deal with the situation: it invokes other programs, depending on the file ending: case $i in *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) uncompress="gzip -cdf";; *[-.]bz2 | *[-.]tbz | *.tbz2) uncompress="bzip2 -cdf";; *[-.]lzo | *[-.]tzo) uncompress="lzop -cdf";; *[-.]zst | *[-.]tzst) uncompress="zstd -cdfq";; # zstd needs -q. *[-.]lz4) uncompress="lz4 -cdf";; *) uncompress="$xz -cdfqQ";; # -qQ to ignore warnings like unsupp. check. esac Something similar could be implemented in our wrapper script if one really wants to address the issue. -- You are receiving this mail because: You are the assignee for the bug.home | help
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