This calls the external C<zfgrep -i> program and returns the
matching lines.");
- ("realpath", (RString "rpath", [Pathname "path"]), 163, [],
+ ("realpath", (RString "rpath", [Pathname "path"]), 163, [Optional "realpath"],
[InitISOFS, Always, TestOutput (
[["realpath"; "/../directory"]], "/directory")],
"canonicalized absolute pathname",