Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

prep-diag11.td
// RUN: not llvm-tblgen -I %p %s 2>&1 | FileCheck %s

// CHECK: error: Reached EOF without matching #endif
// CHECK: error: The latest preprocessor control is here
#ifdef DISABLED
#else
#define ENABLED
include "prep-diag11-include.inc"