String count method in 1.9

As per the Ruby documentation,
string.count(character_set1,character_set2)first takes the
intersection of
character_set1 and character_set2 and then counts the number of times
character from the resulting intersection occurs in string.

The program:
a = ‘hooooooooooll’
puts a.count “lo” “o”

displays 10 in irb but displays 12 in Ruby 1.9. Why?

Damn silly of me, to miss out the , between the two parameters. I’ll
attribute it to my high fever but still can’t leave aside Ruby :slight_smile: