Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5

Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/internal/pkg/completion/bash.go b/internal/pkg/completion/bash.go
new file mode 100644
index 0000000..a42e5b6
--- /dev/null
+++ b/internal/pkg/completion/bash.go
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2019-present Ciena Corporation
+ *
+ * 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.
+ */
+package completion
+
+const Bash = `
+#  Copyright 2019-present Ciena Corporation
+# 
+# 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.
+#
+_voltctl() {
+    # All arguments except the first one
+    args=("${COMP_WORDS[@]:1:$COMP_CWORD}")
+
+    # Only split on newlines
+    local IFS=$'\n'
+
+    # Call completion (note that the first element of COMP_WORDS is
+    # the executable itself)
+    COMPREPLY=($(GO_FLAGS_COMPLETION=1 ${COMP_WORDS[0]} "${args[@]}"))
+    return 0
+}
+
+complete -F _voltctl voltctl
+`