YAML LOL
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Authored by Joe on Nov 24 2021, 4:40 PM.

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	F34764931: YAML LOL
	Nov 24 2021, 4:40 PM

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	test yaml file:
	```
	test:
	- name: foo
	params: &params
	bar: baz
	fixx: buxx
	- name: bar
	params:
	bar: BAR
	<<: *params

	```
	Ruby:
	```
	$ irb
	irb(main):001:0> require yaml
	irb(main):004:0> YAML.load_file('test.yaml')
	=> {"test"=>[{"name"=>"foo", "params"=>{"bar"=>"baz", "fixx"=>"buxx"}}, {"name"=>"bar", "params"=>{"bar"=>"baz", "fixx"=>"buxx"}}]}
	```
	The incoming parameter wins!

	Python:
	```
	$ python3
	Python 3.9.9 (main, Nov 16 2021, 10:24:31)
	[GCC 11.2.0] on linux
	Type "help", "copyright", "credits" or "license" for more information.
	>>> import yaml
	>>> with open('test.yaml', 'r') as fh:
	... yaml.safe_load(fh)
	...
	{'test': [{'name': 'foo', 'params': {'bar': 'baz', 'fixx': 'buxx'}}, {'name': 'bar', 'params': {'bar': 'BAR', 'fixx': 'buxx'}}]}
	```
	The local parameter wins!

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Joe created this paste.Nov 24 2021, 4:40 PM

That's a bug in the Ruby implementation. The YAML 1.1 Merge Key spec says:

If the value associated with the key is a single mapping node, each of its key/value pairs is inserted into the current mapping, unless the key already exists in it.

Obligatory link:
https://github.com/krakjoe/uopz/commit/e94fe6cace79edc700e520045b485f97605b24d2

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YAML LOL
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