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#!/bin/sh
# Block until no zellij sessions remain.
#
# Used as the ExecStart payload of zellij-inhibit-suspend.service: the
# service wraps this script with `systemd-inhibit`, so the inhibit lock
# is held for exactly the lifetime of this process. When the last zellij
# session ends, this script exits 0, the service stops, and the lock is
# released.
#
# A user-level `.path` unit re-activates the service whenever the zellij
# socket directory becomes non-empty again, so the lock is automatically
# reacquired on the next `zellij` invocation.
set -eu
poll=${ZELLIJ_INHIBIT_POLL:-15}
while sessions=$(zellij list-sessions --short 2>/dev/null) &&
[ -n "$sessions" ]; do
sleep "$poll"
done
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