HRX

HRX (Human Readable Archive) is a simple non-compressed archive format designed for storing text files. It is apparently associated with Google.

The specification seems to imply that it can only store files that are valid UTF-8.

Identification
An HRX file starts with ' ', then one or more ' ' characters, then ' ', then either a space or newline.

Specifications

 * https://github.com/google/hrx

Sample files

 * https://github.com/google/hrx/tree/master/example