Numbers are rounded

[Feofilakt]

Hello!
Numbers are rounded and converted to exp notation: https://play.spruce.cf/#39a2a4d6ebafb495ede3dc87a4723512

--- # first.yml
some_data: this will be overwritten later
--- # second.yml
some_data: 4200000.42

some_data: 4.2000005e+06

Its a bug or feature?

[geofffranks]

This is also part of the https://gopkg.in/yaml.v2 library. See go-yaml/yaml#669 for more details.

[Feofilakt]

If I understood that issue correctly, there is an option "%g" that must keep accuracy