# File lib/maruku/string_utils.rb, line 83
        def number_of_leading_spaces(s)
                n=0; i=0;
                while i < s.size 
                        c = s[i,1]
                        if c == ' '
                                i+=1; n+=1;
                        elsif c == "\t"
                                i+=1; n+=TabSize;
                        else
                                break
                        end
                end
                n
        end