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#!/usr/bin/env sh
# Description: Autodetects a nnn remote mountpoint (mounted with `c`)
# from any of its subfolders and allows unmounting it
# from the subdir without navigating to the mountppoint
# or entering the remote name. Also works when hovering
# the mountpoint directly like vanilla `u`.
#
# Dependencies: fusermount
#
# Shell: POSIX compliant
# Authors: Kabouik & 0xACE
#
# TODO:
# - Avoid lazy unmount by forcing nnn context to leave the subfolder before fusermount.
# Tried `printf "%s" "0c$m" > "$NNN_PIPE"` but it breaks the nnn interface, see #854.
err=0
m=$HOME/.config/nnn/mounts
if [ "$PWD" = "$m" ]; then
# Allow running the script on hovered directory if user is in ~/.config/nnn/mounts
d="$1"
else
d=$(dirname "$(readlink -f "$1")" | grep -oP "^$m\K.*" | cut -d"/" -f2)
fi
# Test if user is within $m or a subdir, abort if not
if [ "$d" = "" ]; then
clear && printf "You are not in a remote folder mounted with nnn. Press return to continue. " && read -r _
else
# Test if $m/$d is a mountpoint and try unmounting if it is
mountpoint -q -- "$m/$d"
if [ "$?" -eq "1" ]; then
clear && printf "Parent '%s' is not a mountpoint. Press return to continue. " "$d" && read -r _
else
cd "$m" && fusermount -uq "$m/$d" || err=1
if [ "$err" -eq "0" ]; then
rmdir "$m/$d" && clear && printf "Parent '%s' unmounted." "$d"
else
clear && printf "Failed to unmount. Try lazy unmount? [Yy/Nn] " && read -r
fi
fi
fi
# If unmount fails, offer lazy unmount
if [ "$REPLY" = "y" ] || [ "$REPLY" = "Y" ]; then
err=0
cd "$m" && fusermount -uqz "$m/$d" || err=1
if [ "$err" -eq "0" ]; then
rmdir "$m/$d" && clear && printf "Parent '%s' unmounted with lazy unmount. " "$d"
fi
fi
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