Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

symbol-rewriter.c
// RUN: %clang -frewrite-map-file=%S/Inputs/rewrite.map -### %s 2>&1 | FileCheck %s -check-prefix CHECK-SINGLE

// CHECK-SINGLE: "-frewrite-map-file={{.*[\\/]}}rewrite.map"

// RUN: %clang -frewrite-map-file=%S/Inputs/rewrite-1.map -frewrite-map-file=%S/Inputs/rewrite-2.map -### %s 2>&1 | FileCheck %s -check-prefix CHECK-MULTIPLE

// CHECK-MULTIPLE: "-frewrite-map-file={{.*[\\/]}}rewrite-1.map" "-frewrite-map-file={{.*[\\/]}}rewrite-2.map"