How do i prevent elasticsearch's _analyze from interpretting yml - elasticsearch

Question

I'm trying to use the _analyze api with text that looks like this:
--- some -- text ---
This request works as expected:
curl localhost:9200/my_index/_analyze -d '--'
{"tokens":[]}
However, this one fails:
curl localhost:9200/medical_documents/_analyze -d '---'
---
error:
root_cause:
- type: "illegal_argument_exception"
reason: "Malforrmed content, must start with an object"
type: "illegal_argument_exception"
reason: "Malforrmed content, must start with an object"
status: 400
Considering the formatting of the response, i assume that elasticsearch tried to parse the request as yaml and failed.
If that is the case, how can i disable yml parsing, or _analyze a text that starts with --- ?

Answer 1

The problem is not the yaml parser. The problem is that you are trying to create a type.
The following is incorrect(will give you Malforrmed content, must start with an object error)
curl localhost:9200/my_index/medical_documents/_analyze -d '---'
This will give you no error, but is incorrect. Because it will tell elastic to create a new type.
curl localhost:9200/my_index/medical_documents/_analyze -d '{"analyzer" : "standard","text" : "this is a test"}'
Analyzers are created Index level. verify with:
curl -XGET 'localhost:9200/my_index/_settings'<br/>
So the proper way is:
curl -XGET 'localhost:9200/my_index/_analyze' -d '{"analyzer" : "your_analyzer_name","text" : "----"}'
Previously need to create the analyzer.