Add support for piping using other file descriptor than fd 1

darcs-hash:20051007140857-ac50b-314a47d98ccd09e837be7bd81ebe58d5144c3499.gz

proc.h

@@ -92,6 +92,8 @@ typedef struct process{
 		INTERNAL_BUILTIN, \c INTERNAL_FUNCTION, \c INTERNAL_BLOCK
 	*/
 	int type;
+	/** File descriptor that pipe output should bind to */
+	int pipe_fd;
 	/** true if process has completed */
 	volatile int completed;
 	/** true if process has stopped */