JSON and TOML format require explicit quoting of strings in single values like environment variables

[akaIDIOT]

While not allowing bare strings is a feature of both JSON and TOML, this becomes a bit cumbersome when simple string configuration values are supplied through environment variables.

$ NAME_CONFIG="value" program    # will raise an UnexpectedCharError
$ NAME_CONFIG="'value'" program  # value is quoted, this works

Though correct, can we come up with something decent that will alleviate the pain but not break other things?

[akaIDIOT]

Could applicable formats get something like a format=TOML(bare_str=True)? Aside from naming, this might allow to keep the default compliant with the format, but allow a user to expect these things and the implementation to take a different path if it requested as such.

[akaIDIOT]

Alternatively, the semantics of Format.loads() could be updated to expect a 'full document', adding an extra Format.load_value() that defaults to calling loads(), but enabling a Format to jump through specific hoops if needed.