multiline support for kubernetes_logs source

[gwang-JNPR]

Hi All,

I have java program running on k8s, I wish to combine multiline exceptions.
I know file source support multiline and I am currently using it: https://vector.dev/docs/reference/configuration/sources/file/#multiline

How to do the same via kubernetes_logs source?
transforms via Lua?

[gwang-JNPR]

found the answer: #13080

[huanghuangzym]

can reduce support reg match?