Render of multiline string breaks pretty yaml printing in certain cases

[distorhead]

Before proceeding

• I didn't find a similar issue

Version

1.2.204

How to reproduce

Define a manifest with string-value as multiline yaml which contains empty string with number of spaces more than identation level:

---$
apiVersion: v1$
kind: ConfigMap$
metadata:$
  name: cm$
data:$
  stringkey: |$
    hello: world$
     $
    test: value$

Note that after hello: world there is 5 spaces, while identation of string value yaml is 4 spaces.

Result

Run werf render (or werf helm template .helm):

# Source: test/templates/cm.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: cm
  annotations:
    project.werf.io/env: ""
    project.werf.io/name: x
    werf.io/version: dev
data:
  stringkey: "hello: world\n \ntest: value\n"

stringkey value is no more multiline string.

Expected result

Running vanilla helm template .helm does not break multiline representation of stringkey:

---
# Source: test/templates/cm.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: cm
data:
  stringkey: |
    hello: world
     
    test: value

Additional information

No response

[distorhead]

More cases.

Works OK:

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: renew-role-mapping
data:
  aa: |
    xx: hello
{{ include "odsp_extend_role_mapping" . | indent 4 }}

Fails:

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: renew-role-mapping
data:
  aa: |
    xx: hello
    key:
{{ include "odsp_extend_role_mapping" . | indent 6 }}

Workaround is to add trim either in include statement or in the template definition itself:

{{ include "odsp_extend_role_mapping" . | trim | indent 6 }}

Or:

{{- define "odsp_extend_role_mapping" -}} # << right trim here
...
{{- end }}