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�Zddd�Zddd�Zddd�Zdd� Zddd�ZdS )z9Common utility functions for interacting with subprocess.� N)�ENOEXEC�
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| dj|�d���|S ) a� Ensure user-provided commands start with base_command; warn otherwise.
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not present.
- When the command is a string not starting with 'base-command', warn.
Allow flexibility to provide non-base-command environment/config setup if
needed.
@commands: List of commands. Each command element is a list or string.
@return: List of 'fixed up' commands.
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