[Yaml-core] Integer vs. String when Dump-ing from Perl?

[Johan H. <hol...@ia...>]

Hi!

I've been using YAML in both Perl and Ruby without any problem. But 
recently I tried to mix the two languages, and let both work on the the 
same YAML-files. As far as I can see, a string that happens to consist 
of only integers "looses" its type when it is handled by Perl. For example:

     $ cat example.yaml
     ---
     - 11
     - "22"
     - foo
     $
     $ perl -MYAML -00 -e 'print Dump Load <>' example.yaml
     --- #YAML:1.0
     - 11
     - 22
     - foo
     $
     $ ruby -rYAML -e 'print YAML.load(ARGF.read).to_yaml' example.yaml
     ---
     - 11
     - "22"
     - foo

In the Perl case above the "22" is transformed into a number 22.

I'm aware of Perl's indifference and on-the-fly conversion between 
numbers and strings. But I had still hoped that YAML for Perl would have 
left a string looking like a number as it was (like Data::Dumper in Perl 
does).

Is there some way of configuring YAML for Perl to do what I want,
or is it impossible to this behavior?

Regards,
Johan Holmberg