Version 0.2.1 behavior is documented here. Thesupport record separates local verification frompublished MoonX behavior; moonx examples use registry releases.
Print selected environment values, or the complete environment when no namesare supplied. -0 emits NUL-delimited records. Existing names are emitted inoperand order; any missing name makes the final status 1 without suppressingvalues found earlier or later. It reads the environment exposed by the host;the command does not filter variable names or force locale values.
Standalone --version prints exactly printenv 0.2.1 followed by onenewline. Standalone --help starts with Usage: printenv, lists bothmetadata options, and ends with a newline. Both write to stdout, leave stdinunread, and exit with status 0. Exact-version publication and verificationremain recorded separately in the support record.