Failed to find UnrealBuildTool.exe if the path includes a space character

To reproduce:

  1. Clone UnrealEngine repository from GitHub into the path including a space character like: /path/foo bar/UnrealEngine
  2. Execute and
  3. Open UE4 Xcode workspace
  4. Build and it will be failed because it couldn’t find UnrealBuildTool.exe.


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