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(Fopen_network_stream): Likewise.

(read_process_output): Use read instead of READ_CHILD_OUTPUT.

do check for keyboard input and swallow events, just don't exit.
(max): New macro.
(wait_reading_process_input): Pass a smaller first arg to select.

keyboard input if wait_for_cell.

Don't close the output descriptor if that is also the input descriptor.

the process WAIT_PROC has terminated, first read all its output.

Vdefault_process_coding_system.
(Fopen_network_stream): Likewise.

based on actual buffer change rather than size of string.
old_begv and old_zv are now ints.
(status_notify): Likewise for opoint.

ignore subprocess input and respond only to keyboard.
(non_process_wait_mask): New variable.
(add_keyboard_wait_descriptor): Update it.
(delete_keyboard_wait_descriptor): Update it.
(init_process): Initialize it.

character code conversion if enable-multibyte-characters is nil.

(proc_decode_coding_system, proc_encode_coding_system): New
variables.
(Fstart_process, create_process, Fopen_network_stream): Setup
coding systems for character code conversion.
(READ_CHILD_OUTPUT): New macro.
(read_process_output): Perform character code conversion of a
process output.
(send_process): Perform character code conversion of a text sent
to a process.
(Fset_process_coding_system, Fprocess_coding_system): New
functions.
(syms_of_process): Handle them.

(create_process): Block input around the fork.

Call Fmatch_data with new explicit arguments.

When we wait for the buffer to clear, wait just .02 second.

before each call to read_process_output.
(read_process_output): Handle match data properly in recursive calls.
(exec_sentinel): Likewise.

just before running the sentinel, in case it dies.

(syms_of_process): staticpro deleted.

Don't reestablish handler.

(Fopen_network_stream): Store a cons cell in childp.
(NETCONN_P): Use GC_CONSP.
(list_processes_1): Use new childp format.

and defined (HAVE_SETSID) instead of DONT_REOPEN_PTY.

Don't reinstall sig handler if POSIX_SIGNALS.

annoying messages.

O_NDELAY conditionals out of the EWOULDBLOCK conditional.

socket library is loaded if available.

(create_process, read_process_output, Fsignal_process) [WINDOWSNT]:
Remove conditional NT code.

If wait_for_cell, don't call timer_check, and use
detect_input_pending instead of detect_input_pending_run_timers.

Get rid of the loop around the detect_input_pending call.