/usr/share/fish/functions/prompt_pwd.fish is in fish-common 2.2.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | set -l args_pre
set -l args_post
switch (uname)
case Darwin
set args_pre $args_pre -e 's|^/private/|/|'
case 'CYGWIN_*'
set args_pre $args_pre -e 's|^/cygdrive/\(.\)|\1/:|'
set args_post $args_post -e 's-^\([^/]\)/:/\?-\u\1:/-'
end
function prompt_pwd -V args_pre -V args_post --description "Print the current working directory, shortened to fit the prompt"
set -l realhome ~
echo $PWD | sed -e "s|^$realhome|~|" $args_pre -e 's-\([^/.]\)[^/]*/-\1/-g' $args_post
end
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