Commit 31e0fbdd authored by Kim F. Storm's avatar Kim F. Storm

*** 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.
Please send Emacs bug reports to
......@@ -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
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment