def strip_indent(s, n) 
		i = 0
		while i < s.size && n>0
			c = s[i,1]
			if c == ' '
				n-=1;
			elsif c == "\t"
				n-=TabSize;
			else
				break
			end
			i+=1
		end
		s[i, s.size]
	end
def strip_indent(s, n) 
		i = 0
		while i < s.size && n>0
			c = s[i,1]
			if c == ' '
				n-=1;
			elsif c == "\t"
				n-=TabSize;
			else
				break
			end
			i+=1
		end
		s[i, s.size]
	end
toglie al massimo n caratteri