  Process Internals The fields of a process (for a complete list, see the definition of struct Lisp_Process in process.h) include:   name 
A Lisp string, the name of the process.   command 
A list containing the command arguments that were used to start this process. For a network or serial process, it is nil if the process is running or t if the process is stopped.   filter 
A Lisp function used to accept output from the process.   sentinel 
A Lisp function called whenever the state of the process changes.   buffer 
The associated buffer of the process.   pid 
An integer, the operating system’s process ID. Pseudo-processes such as network or serial connections use a value of 0.   childp 
A flag, t if this is really a child process. For a network or serial connection, it is a plist based on the arguments to make-network-process or make-serial-process.   mark 
A marker indicating the position of the end of the last output from this process inserted into the buffer. This is often but not always the end of the buffer.   kill_without_query 
If this is non-zero, killing Emacs while this process is still running does not ask for confirmation about killing the process.   raw_status 
The raw process status, as returned by the wait system call.   status 
The process status, as process-status should return it. This is a Lisp symbol, a cons cell, or a list.   tick update_tick 
If these two fields are not equal, a change in the status of the process needs to be reported, either by running the sentinel or by inserting a message in the process buffer.   pty_flag 
Non-zero if communication with the subprocess uses a pty; zero if it uses a pipe.   infd 
The file descriptor for input from the process.   outfd 
The file descriptor for output to the process.   tty_name 
The name of the terminal that the subprocess is using, or nil if it is using pipes.   decode_coding_system 
Coding-system for decoding the input from this process.   decoding_buf 
A working buffer for decoding.   decoding_carryover 
Size of carryover in decoding.   encode_coding_system 
Coding-system for encoding the output to this process.   encoding_buf 
A working buffer for encoding.   inherit_coding_system_flag 
Flag to set coding-system of the process buffer from the coding system used to decode process output.   type 
Symbol indicating the type of process: real, network, serial.   

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