Commit 31e0fbdd authored by Kim F. Storm's avatar Kim F. Storm
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*** empty log message ***

parent 2d942bfa
GNU Emacs NEWS -- history of user-visible changes. 2003-05-21
Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
See the end for copying conditions.
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......@@ -2523,6 +2523,17 @@ and modify elements on this property list.
The new low-level functions process-plist and set-process-plist are
used to access and replace the entire property list of a process.
*** Adaptive read buffering of subprocess output.
On some systems, when emacs reads the output from a subprocess, the
output data is read in very small blocks, potentially resulting in
very poor performance. This behaviour can be remedied to some extent
by setting the new variable process-adaptive-read-buffering to a
non-nil value (the default), as it will automatically delay reading
from such processes, to allowing them to produce more output before
emacs tries to read it.
** Enhanced networking support.
2004-01-02 Kim F. Storm <>
* process.h (struct Lisp_Process): New members for adaptive read
buffering: adaptive_read_buffering, read_output_delay, and
* process.c (ADAPTIVE_READ_BUFFERING): New conditional.
(process_output_delay_count, process_output_skip): New vars.
(Vprocess_adaptive_read_buffering): New variable.
(make_process): Initialize adaptive read buffering members.
(Fstart_process): Set adaptive_read_buffering member.
(deactivate_process): Cleanup adaptive read buffering.
(wait_reading_process_input): Temporarily omit delayed
subprocesses from the set of file descriptors to read from;
adjust the select timeout if we skipped any subprocesses.
(read_process_output): Increase adaptive read buffering delay if
we read less than a full buffer; reduce delay when we read a
full buffer.
(send_process): Simplify using local Lisp_Process var.
Reset adaptive read buffering delay after write.
(init_process): Initialize process_output_delay_count and
(syms_of_process): DEFVAR_LISP Vprocess_adaptive_read_buffering.
2004-01-01 Jason Rumney <>
* w32term.c (w32_text_out): Use s->font, for consistency with
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