Wrong indentation level?

Lines 511 to 516 in 5af5693

    
           if s == 'N' or s == '-': 
        
               if start_n == -1: 
        
                   start_n = i 
        
           elif start_n >= 0: 
        
               missings.append((start_n, i - 1)) 
        
               start_n = -1

I think lines 514 and 515 should be one level down

oh - I get it. This is collapsing two tests:

is s something other than N or -
is start_n not -1, indicating that we started tracking a missing interval

	if s == 'N' or s == '-':
	if start_n == -1:
	start_n = i
	elif start_n >= 0:
	missings.append((start_n, i - 1))
	start_n = -1