On: Node.js 20.6.0 will include built-in support for ....

[prng2021]

Can you provide a concrete example? What do you mean by other software not parsing it the same way?

[3np → prng2021]

  FOO="abc
  BAR=123"

Is this one or two vars? What is the value of FOO?

[prng2021 → 3np]

I've never seen something like this in an env file. No one should be putting lines like this in an env file unless it's by mistake.

[3np → prng2021]

Your personal opinion of how esoteric or weird this is is besides the point - there are fundamentally incompatible interpretations where I can bet that switching will be breaking and potentially dangerous for some out there.

[moojd → prng2021]

Some execute them as a shell script and others parse them as a newline separated list of key value pairs