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diff --git a/bpkg/pkg-unpack-options.cli b/bpkg/pkg-unpack-options.cli
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+// file      : bpkg/pkg-unpack-options.cli
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+include <bpkg/common-options.cli>;
+
+/*
+"\section=1"
+"\name=bpkg-pkg-unpack"
+
+"\h{SYNOPSIS}
+
+bpkg pkg-unpack [<options>] <pkg>|(-e <dir>)"
+
+"\h{DESCRIPTION}
+
+The \cb{pkg-unpack} command unpacks the archive for the previously
+fetched (\cb{pkg-fetch}) package. If the \cb{-e|--existing} option
+is used, then instead of the package name, \cb{pkg-unpack} expects
+a local path to the existing package source directory. In this case,
+\cb{bpkg} will use the directory in place, without copying it to the
+configuration or package cache directories. It will also not attempt
+to remove this directory if the package is purged with the \cb{pkg-purge}
+command."
+*/
+
+namespace bpkg
+{
+  class pkg_unpack_options: common_options
+  {
+    dir_path --directory|-d (".")
+    {
+      "<dir>",
+      "Assume configuration is in <dir> rather than in the current working
+       directory."
+    };
+
+    bool --existing|-e
+    {
+      "Treat the argument as an existing package directory path rather than
+       package name to unpack."
+    };
+  };
+}