Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

multiple-include.cpp
// RUN: rm -rf %t
// RUN: %clang_cc1 -fmodules -I%S/Inputs/multiple-include -fmodules-cache-path=%t -fimplicit-module-maps -verify %s -fmodules-local-submodule-visibility
// expected-no-diagnostics
#include "b.h"
int c = get();