issues passing values with whitespace to config:set

[James-Quigley]

What is the current behavior?

If typing manually into the shell, I can type something like:
heroku config:set FOO=bar SPACE="Acme Corp" FIZZ=buzz
This works correctly!

However if I have a file with KV pairs such as:

FOO=bar
SPACE="Acme Corp"
FIZZ=buzz

and run heroku config:set $(cat <file>), I get the error:
'Corp" is invalid. Must be in the format FOO=bar.'

How can I get these KV pair into the config:set command correctly? There's gotta be a way to properly pass the entries with spaces into this command that I'm missing

I also tried putting all the KV entries on one line separated by spaces. It really feels like this command should accept input from stdin so I can redirect the file in or something.

What is the expected behavior?

I would expect it to function the same as if you input the values manually, and to parse the entry as SPACE="Acme Corp", instead it is parsing as SPACE="Acme and Corp" separately.

heroku --version

heroku/7.41.1 darwin-x64 node-v12.16.2