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# Completion setup for bd()
_bd() {
# The function accepts only one argument, so it doesn't make sense to
# complete anywhere else
((COMP_CWORD == 1)) || return
# Iterate through slash-delimited matching parent path elements, as piped
# in by the subshell
local ci word
while IFS= read -rd/ word ; do
COMPREPLY[ci++]=$word
done < <(
# Build an array of path nodes, leaf to root
path=$PWD
while [[ -n $path ]] ; do
node=${path##*/}
path=${path%/*}
[[ -n $node ]] || continue
nodes[ni++]=$node
done
# Continue if we have at least two nodes, counting the leaf
((${#nodes} > 1)) || return
# Shift off the leaf, since it's not meaningful to go "back to" the
# current directory
nodes=("${nodes[@]:1}")
# Turn on case-insensitive matching, if configured to do so
while read -r _ setting ; do
case $setting in
('completion-ignore-case on')
shopt -s nocasematch 2>/dev/null
break
;;
esac
done < <(bind -v)
# Iterate through the nodes and print the ones that match the word
# being completed, with a trailing slash as terminator
for node in "${nodes[@]}" ; do
case $node in
("$2"*)
printf '%s/' "$node"
;;
esac
done
)
}
complete -F _bd bd
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