Double escape backward slash with HELMFILE_V1MODE=true

[z0rc]

Operating system

MacOS 14.0

Helmfile Version

v0.157.0

Helm Version

v3.13.1

Bug description

With HELMFILE_V1MODE=true HELMFILE_GOCCY_GOYAML=false helmfile template | grep css -A5 -B5 result is okay:

          string_attribute:
            enabled_regex_matching: true
            invert_match: true
            key: http.url
            values:
            - \.(js|css|json)
          type: string_attribute
    receivers:
      jaeger:
        protocols:
          grpc:

With HELMFILE_V1MODE=true HELMFILE_GOCCY_GOYAML=true helmfile template | grep css -A5 -B5 result is not okay, double escape \\. is generated:

          string_attribute:
            enabled_regex_matching: true
            invert_match: true
            key: http.url
            values:
            - \\.(js|css|json)
          type: string_attribute
    receivers:
      jaeger:
        protocols:
          grpc:

I wasn't able to find how wrap or escape this string to avoid double escaping and preserve single slash. I tried single quotes, double quotes and go template literals like:

{{` \.(js|css|json) `}}

to no avail.

Example helmfile.yaml

It's helmfile.yaml.gotmpl

repositories:
- name: open-telemetry
  url: https://open-telemetry.github.io/opentelemetry-helm-charts

releases:
- name: opentelemetry-collector
  namespace: opentelemetry
  chart: open-telemetry/opentelemetry-collector
  version: 0.72.0
  disableValidationOnInstall: true
  values:
  - mode: deployment
    config:
      processors:
        tail_sampling:
          policies:
          - name: drop_noisy_traces_by_url
            type: string_attribute
            string_attribute:
              key: http.url
              values:
              - \.(js|css|json) # <--- this line is problematic
              enabled_regex_matching: true
              invert_match: true

Error message you've seen (if any)

None

Steps to reproduce

See Bug description example helmfile

Working Helmfile Version

v0

Relevant discussion

#656

[z0rc]

I guess helmfile does some unmarshall-marshal process with yaml. I kinda reproduced this here https://go.dev/play/p/bHQbbYDBBo-. It isn't clear, if this is something of expected goccy/go-yaml behavior and whether it can be adjusted on helmfile side.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[z0rc]

Not stale. (i hate this bot)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[z0rc]

Not stale.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[z0rc]

Not stale.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[z0rc]

Not stale.

[MaksimAniskov]

I hit this bump too. +1 Really appreciate someone's addressing this problem