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   NAME
	GetPrompt -- Returns the prompt for the current process (V36)

   SYNOPSIS
	success = GetPrompt(buf, len)
	D0                  D1   D2

	BOOL GetPrompt(STRPTR, LONG)

   FUNCTION
	Extracts the prompt string from the CLI structure and puts it
	into the buffer.  If the buffer is too small, the string is truncated
	appropriately and a failure code returned.  If no CLI structure is
	present, a null string is returned in the buffer, and failure from
	the call (with IoErr() == ERROR_OBJECT_WRONG_TYPE);

   INPUTS
	buf     - Buffer to hold extracted prompt
	len     - Number of bytes of space in buffer

   RESULT
	success - Success/failure indicator

   SEE ALSO
	SetPrompt()