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diff --git a/rules/native_binary.bzl b/rules/native_binary.bzl
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+# Copyright 2019 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""native_binary() and native_test() rule implementations.
+
+These rules let you wrap a pre-built binary or script in a conventional binary
+and test rule respectively. They fulfill the same goal as sh_binary and sh_test
+do, but they run the wrapped binary directly, instead of through Bash, so they
+don't depend on Bash and work with --shell_exectuable="".
+"""
+
+load("//rules/private:copy_file_private.bzl", "copy_bash", "copy_cmd")
+
+def _impl_rule(ctx, is_windows):
+    out = ctx.actions.declare_file(ctx.attr.out)
+    if is_windows:
+        copy_cmd(ctx, ctx.file.src, out)
+    else:
+        copy_bash(ctx, ctx.file.src, out)
+    return DefaultInfo(
+        executable = out,
+        files = depset([out]),
+        runfiles = ctx.runfiles(
+            files = [out],
+            collect_data = True,
+            collect_default = True,
+        ),
+    )
+
+def _impl(ctx):
+    return _impl_rule(ctx, ctx.attr.is_windows)
+
+_ATTRS = {
+    "src": attr.label(
+        executable = True,
+        allow_single_file = True,
+        mandatory = True,
+        cfg = "host",
+    ),
+    "data": attr.label_list(allow_files = True),
+    # "out" is attr.string instead of attr.output, so that it is select()'able.
+    "out": attr.string(mandatory = True),
+    "is_windows": attr.bool(mandatory = True),
+}
+
+_native_binary = rule(
+    implementation = _impl,
+    attrs = _ATTRS,
+    executable = True,
+)
+
+_native_test = rule(
+    implementation = _impl,
+    attrs = _ATTRS,
+    test = True,
+)
+
+def native_binary(name, src, out, data = None, **kwargs):
+    """Wraps a pre-built binary or script with a binary rule.
+
+    You can "bazel run" this rule like any other binary rule, and use it as a tool in genrule.tools for example. You can also augment the binary with runfiles.
+
+    Args:
+      name: The name of the test rule.
+      src: label; path of the pre-built executable
+      out: output; an output name for the copy of the binary. (Bazel requires that this rule make a copy of 'src'.)
+      data: list of labels; data dependencies
+      **kwargs: The <a href="https://docs.bazel.build/versions/master/be/common-definitions.html#common-attributes-binaries">common attributes for binaries</a>.
+    """
+    _native_binary(
+        name = name,
+        src = src,
+        out = out,
+        data = data,
+        is_windows = select({
+            "@bazel_tools//src/conditions:host_windows": True,
+            "//conditions:default": False,
+        }),
+        **kwargs
+    )
+
+def native_test(name, src, out, data = None, **kwargs):
+    """Wraps a pre-built binary or script with a test rule.
+
+    You can "bazel test" this rule like any other test rule. You can also augment the binary with
+    runfiles.
+
+    Args:
+      name: The name of the test rule.
+      src: label; path of the pre-built executable
+      out: output; an output name for the copy of the binary. (Bazel requires that this rule make a copy of 'src'.)
+      data: list of labels; data dependencies
+      **kwargs: The <a href="https://docs.bazel.build/versions/master/be/common-definitions.html#common-attributes-tests">common attributes for tests</a>.
+    """
+    _native_test(
+        name = name,
+        src = src,
+        out = out,
+        data = data,
+        is_windows = select({
+            "@bazel_tools//src/conditions:host_windows": True,
+            "//conditions:default": False,
+        }),
+        **kwargs
+    )