1 2set -- 1 2 3 4 5 6 7 8 9 10 11 12 13 3[ "${##1}" = 3 ] || echo '${##1} wrong' 4[ "${###1}" = 3 ] || echo '${###1} wrong' 5[ "${###}" = 13 ] || echo '${###} wrong' 6[ "${#%3}" = 1 ] || echo '${#%3} wrong' 7[ "${#%%3}" = 1 ] || echo '${#%%3} wrong' 8[ "${#%%}" = 13 ] || echo '${#%%} wrong' 9set -- 10[ "${##0}" = "" ] || echo '${##0} wrong' 11[ "${###0}" = "" ] || echo '${###0} wrong' 12[ "${###}" = 0 ] || echo '${###} wrong' 13[ "${#%0}" = "" ] || echo '${#%0} wrong' 14[ "${#%%0}" = "" ] || echo '${#%%0} wrong' 15[ "${#%%}" = 0 ] || echo '${#%%} wrong' 16