#realpath

Version 0.1.3 behavior is documented here. The support record separates local verification from published MoonX behavior; moonx examples use registry releases.

Print canonical paths for one or more operands:

moonx cli/realpath -e input.txt
moonx cli/realpath -z input.txt other.txt

-e/--canonicalize-existing requires every component to exist, and -z/--zero terminates records with NUL bytes. Operands are handled independently; a failed operand does not erase earlier output.

The command defaults to allowing a missing final component (-E/--canonicalize), while -e requires every component. -m/--canonicalize-missing also permits missing and non-directory components. -s/--strip/--no-symlinks suppresses link expansion; only -ms is fully lexical. Bare -s still checks existence and intermediate directories. Physical modes walk components and expand resolvable links with the public filesystem API, so link/.. follows the actual target before traversing up. Missing ordinary paths are supported without a blanket physical-mode rejection. On Windows, physical modes also expand existing 8.3 aliases through the public fs.realpath API; -s keeps the supplied lexical spelling.

--relative-to=DIR computes relative output after canonicalization. --relative-base=DIR limits relative output to descendants and defaults the reference directory to the same base. Component boundaries are respected; if the reference is outside the base, all operands remain absolute. Existing mode requires the reference/base to be directories. -q/--quiet suppresses operand failures, preserving failure status and successful output; invalid reference initialization and usage errors remain visible.

An identified symbolic link that public fs.realpath cannot expand is a narrow boundary when missing-mode resolution needs its target text. No public readlink API is available, so those cases fail with an explicit diagnostic and status 2 rather than pretending the link is an ordinary lexical component. -ms can handle the same spelling lexically. Published coordinates remain frozen. --help prints usage and --version prints the command and package version.

#Standalone metadata

Standalone --version prints exactly realpath 0.1.3 followed by one newline. Standalone --help starts with Usage: realpath, lists both metadata options, and ends with a newline. Both write to stdout, leave stdin unread, and exit with status 0. Exact-version publication and verification remain recorded separately in the support record.

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