inconsistent result when concatenating string with null

[ryenus]

Describe the bug
The result of string concatenation with null varies depending on the order:

Command	Output
yq -n '"str" + null' -oj	"strnull"
yq -n 'null + "str"' -oj	"str"
jq -n '"str" + null'	"str"
jq -n 'null + "str"'	"str"

So when null was appended a string it end up as the string literal "null", but when appending a string to null, it end up as an empty string.

Meanwhile as a comparison, jq turns both null into "", namely empty strings.

Version of yq: 4.34.1
Operating system: mac
Installed via: homebrew

Expected behavior
I'd expect when converting null to a string, the result should be consistent in both case, regardless the order of the operands.

[mikefarah]

Thanks for raising - will update so that "str" + null = "str" :)

[mikefarah]

Fixed in 4.35.2