Why does Rails titlecase add a space to a name?

Question

Why does the titlecase mess up the name? I have:

John Mark McMillan

and it turns it into:

>> \"john mark McM         


        

Answer 1

Edited (inspired by The Tin Man's suggestion)

A hack will be:

class String
  def titlecase
    gsub(/(?:_|\b)(.)/){$1.upcase}
  end
end

p "john mark McMillan".titlecase
# => "John Mark McMillan"

Note that the string 'john mark McMillan' is inconsistent in capitalization, and is somewhat unexpected as a human input, or if it is not from a human input, you probably should not have the strings stored in that way. A string like 'john mark mc_millan' is more consistent, and would more likely appear as a human input if you define such convention. My answer will handle these cases as well:

p "john mark mc_millan".titlecase
# => "John Mark McMillan"