I received a user report that
https://www.debian.org/releases/bullseye/amd64/apbs05.en.html#preseed-hooks
provides an incorrect code example:

# This command is run immediately before the partitioner starts. It may be
# useful to apply dynamic partitioner preseeding that depends on the state
# of the disks (which may not be visible when preseed/early_command runs).
#d-i partman/early_command \
#       string debconf-set partman-auto/disk "$(list-devices disk | head -n1)"

The reporter claims that the $ sign should be escaped, like:

#d-i partman/early_command \
#    string debconf-set partman-auto/disk "\$(list-devices disk | head -n1)"

Since I am not familiar with d-i and preseed at all, please verify whether
this makes sense. If this is a problem, it exists in the installation-guide of
both Debian Buster and Debian Bullseye. If it's not, please feel free to close
this bug report.

Hello,

Boyuan Yang, le jeu. 06 mai 2021 11:10:41 -0400, a ecrit:

I guess the reporter actually tested that the backslash is needed. But
do we really want to have to put a backslash here, and thus it's the
documentation that needs to be fixed, or is it partman-auto which is
bogus and should rather be fixed?

Samuel