parseJson with key of "." errors.

[DavidOrchard]

Component

Forge

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (08a629a 2023-06-03T00:14:26.563741000Z)

What command(s) is the bug in?

forge test

Operating System

macOS (Apple Silicon)

Describe the bug

The jq docs at https://jqlang.github.io/jq/manual/#Basicfilters say that a key of "." should return the whole object, but instead

        bytes memory transactionDetails = vm.parseJson(json, ".");

causes

[FAIL. Reason: path error: 
$.
^^
] testParseJson() (gas: 6104)

I've forked and made a PR that adds the failing test. foundry-rs/forge-std#420.

I did the fork & branch against forge-std as I'm new to solidity/forge and couldn't get the foundry/forge solidity tests to run.