Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

missing-header-local-visibility.cpp
// RUN: %clang_cc1 -fmodules-local-submodule-visibility -fimplicit-module-maps -I%S/Inputs/missing-header-local-visibility %s
// RUN: %clang_cc1 -fmodules-local-submodule-visibility -fimplicit-module-maps -I%S/Inputs/missing-header-local-visibility -x c++-header %S/Inputs/missing-header-local-visibility/all.h
// RUN: %clang_cc1 -fmodule-name=M -std=c++2a -fimplicit-module-maps -I%S/Inputs/missing-header-local-visibility -x c++-header %s
// RUN: %clang_cc1 -fmodule-name=M -std=c++2a -fimplicit-module-maps -I%S/Inputs/missing-header-local-visibility -x c++-header %S/Inputs/missing-header-local-visibility/all.h

#include "a.h"
#include "b.h"