Generalize start-process with keyword args

* src/process.c (Fmake_process): New function.
(create_process, create_pty): Check p->pty_flag instead of
Vprocess_connection_type.
(syms_of_process): Register QCcommand, QCconnection_type, Qpty,
Qpipe, and Smake_process.  Unregister Sstart_process.

* lisp/subr.el (start-process): New function, ported from the C
implementation.

* doc/lispref/processes.texi (Asynchronous Processes): Mention
`make-process'.

* etc/NEWS: Mention `make-process'.

2 files changed, 9 insertions, 0 deletions

diff --git a/etc/ChangeLog b/etc/ChangeLog
index c94e12296ed..e146f786f6f 100644
--- a/etc/ChangeLog
+++ b/etc/ChangeLog
@@ -1,3 +1,7 @@
+2015-03-23  Daiki Ueno  <ueno@gnu.org>
+
+        * NEWS: Mention `make-process'.
+
 2015-03-21  Titus von der Malsburg  <malsburg@posteo.de>
 
         * NEWS: Mention `default-font-width', `window-font-height',
diff --git a/etc/NEWS b/etc/NEWS
index 7cdb24b402e..3b848dc6539 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -651,6 +651,11 @@ word syntax, use `\sw' instead.
 
 * Lisp Changes in Emacs 25.1
 
+** New function `make-process' provides an alternative interface to
+`start-process'.  It allows programs to set process parameters such as
+process filter, sentinel, etc., through keyword arguments (similar to
+`make-network-process').
+
 ** `read-buffer' takes a new `predicate' argument.
 
 ** Emacs Lisp now supports generators.