Text string '0x' is marshaled without quotes.

[mcdee]

Describe the bug

Attempting to marshal the text string '0x' returns without quotes.

To Reproduce

https://go.dev/play/p/Zu1JcjgLguZ

Expected behavior

The text string should be marshalled with quotes, as it is a string.

Version Variables

• Go version: 1.21
• go-yaml's Version: e.g. v1.15.11

[goccy]

@mcdee This is not a bug. First, flow mode is not JSON. Additionally, '0x' is correctly interpreted as a string, so when the output is unmarshalled, it will be treated as a string. If you're expecting JSON, you should use yaml.YAMLToJSON

[mcdee]

Is there an option to output anything that is a Go string as a quoted value in go-yaml? The change to behavior (this value was output quoted prior to 1.13.16) is causing broken tests in our repos, but we don't control the source data for the tests (round trip unmarshal and marshal) so we can't work around it easily.

[goccy]

@mcdee Basically, quotes are added only to values that cannot be interpreted as strings. Therefore, since '0x' is clearly a string, quotes cannot be added. Currently, there is no option to explicitly add quotes to strings, so implementing such a feature would require new development.