<oerjan> learn shebang_args_or_input is similar to print_args_or_input, but for other scripting languages like perl or python. E.g. if you have a python script that pipes stdin, replace the usual shebang line by #!/hackenv/bin/shebang_args_or_input python .

b=bottle a=({no+more+$b\s,1+$b,{2..99}+$b\s}+of+beer) w=on+the+wall
x=(Take+one+down,+pass+it+around Go+to+the+store+and+buy+some+more)
for i in {99..0};{
echo "${a[i]^} $w, ${a[i]}.
${x[!i]}, ${a[i-1]} $w."
}|tr + \