/usr/share/fish/functions/cd.fish is in fish-common 2.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Wrap the builtin cd command to maintain directory history.
#
function cd --description "Change directory"
set -l MAX_DIR_HIST 25
if test (count $argv) -gt 1
printf "%s\n" (_ "Too many args for cd command")
return 1
end
# Skip history in subshells.
if status --is-command-substitution
builtin cd $argv
return $status
end
# Avoid set completions.
set -l previous $PWD
if test "$argv" = "-"
if test "$__fish_cd_direction" = "next"
nextd
else
prevd
end
return $status
end
builtin cd $argv
set -l cd_status $status
if test $cd_status -eq 0 -a "$PWD" != "$previous"
set -q dirprev[$MAX_DIR_HIST]
and set -e dirprev[1]
set -g dirprev $dirprev $previous
set -e dirnext
set -g __fish_cd_direction prev
end
return $cd_status
end
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