complete -c block -s h -l help -d (N_ "Display help and exit" )
complete -c block -s e -l erase -d (N_ "Remove the topmost global event block" )
complete -c block -s l -l local -d (N_ "Create a local (automatically erased) event block" )
complete -c block -s g -l global -d (N_ "Create a global (manually erased) event block" )