Notify when slow commands finished in background

config.fish

set -gx NOTIFY_ON_COMMAND_DURATION 5000
function fish_right_prompt
    if test -n "$CMD_DURATION"; and test $CMD_DURATION -gt $NOTIFY_ON_COMMAND_DURATION
        if type -q wezterm; and test -n "$WEZTERM_PANE"
            set -l active_pid (osascript -e 'tell application "System Events" to get the unix id of first process whose frontmost is true')
            set -l active_pane (wezterm cli list-clients | perl -anle 'print $F[$#F] if $F[2] == '$active_pid)
            if test -n "$active_pane"; and test $WEZTERM_PANE -eq $active_pane
                return
            end
        end
        set -l duration (bc -S2 -e $CMD_DURATION/1000)
        set -l msg (echo (history | head -1) returned $status after $duration s)
        osascript -e 'display notification "'$msg'" with title "command completed"'
    end
end

WezTerm + fish でコマンドが完了したら通知する #macOS - Qiita