YAML.to_s in JRuby

What I’m used to:

YAML.to_s # “YAML”

What JRuby gives me:

YAML.to_s # “Psych”

Bug, feature, quirk?

Hal

It’s the same in MRI Ruby 1.9.3.

irb(main):001:0> require ‘yaml’
=> true
irb(main):002:0> YAML
=> Psych

Between 1.8 and 1.9 old YAML parser and generator was scrapped and
replaced with a new one called Psych. There is probably a line like
“YAML = Psych” somewhere in Ruby stdlib, for backwards compatibility.

– Matma R.

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