Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

NoNewName.cpp
// Check for an error while -new-name argument has not been passed to
// clang-rename.
// RUN: not clang-rename -offset=133 %s 2>&1 | FileCheck %s
// CHECK: clang-rename: -new-name must be specified.