GNU bug report logs - #79231
sends non-printable characters to the terminal in error message

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From: Vincent Lefevre <vincent <at> vinc17.net>
To: 79231 <at> debbugs.gnu.org
Subject: bug#79231: sends non-printable characters to the terminal in error message
Date: Wed, 13 Aug 2025 16:49:59 +0200

gzip can send non-printable characters to the terminal in its error
message. This is bad because escape sequences and control characters
can have unpredictable consequences in the terminal.

For instance,

$ touch "$(printf "file\e[H\e[c\n\b")"
$ gunzip file*

makes xterm crash with reverseWrap enabled.

Note: The end user is not necessary the cause of such of file name,
which may come from a downloaded archive or from a bug in some
software.

-- 
Vincent Lefèvre <vincent <at> vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)

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