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(elisp)Deleting Processes

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Deleting Processes
==================

   "Deleting a process" disconnects Emacs immediately from the
subprocess, and removes it from the list of active processes.  It sends
a signal to the subprocess to make the subprocess terminate, but this is
not guaranteed to happen immediately.  The process object itself
continues to exist as long as other Lisp objects point to it.  The
process mark continues to point to the same place as before (usually
into a buffer where output from the process was being inserted).

   You can delete a process explicitly at any time.  Processes are
deleted automatically after they terminate, but not necessarily right
away.  If you delete a terminated process explicitly before it is
deleted automatically, no harm results.

 - User Option: delete-exited-processes
     This variable controls automatic deletion of processes that have
     terminated (due to calling `exit' or to a signal).  If it is
     `nil', then they continue to exist until the user runs
     `list-processes'.  Otherwise, they are deleted immediately after
     they exit.

 - Function: delete-process name
     This function deletes the process associated with NAME, killing it
     with a `SIGHUP' signal.  The argument NAME may be a process, the
     name of a process, a buffer, or the name of a buffer.

          (delete-process "*shell*")
               => nil

 - Function: process-kill-without-query process &optional do-query
     This function specifies whether Emacs should query the user if
     PROCESS is still running when Emacs is exited.  If DO-QUERY is
     `nil', the process will be deleted silently.  Otherwise, Emacs
     will query about killing it.

     The value is `t' if the process was formerly set up to require
     query, `nil' otherwise.  A newly-created process always requires
     query.

          (process-kill-without-query (get-process "shell"))
               => t