Ruby split ignores empty fields

Came across a little weirdness with the string split function in ruby today. Basically

"a,b,c".split(",") #=> ["a,b,c"] # this is correct
"a,b,c,,".split(",") #=> ["a", "b", "c"] # this is weird

I was expecting the second one to have 2 extra empty fields. After doing some digging, turns out there is a limit param.

If the limit parameter is omitted, trailing null fields are suppressed. If limit is a positive number, at most that number of fields will be returned (if limit is 1, the entire string is returned as the only entry in an array). If negative, there is no limit to the number of fields returned, and trailing null fields are not suppressed.

source: Class: String (ruby 2.1.4)

Essentially, the split function needs to be called with a limit the same way as you would in Scala.

"a,b,c,,".split(",",-1) #=> ["a", "b", "c", "", ""]