Merge from origin/emacs-26

3abebeb * lisp/files.el (cd): Fix last change.  (Bug#33791)
7a60a4f Fix remote directories in Eshell on MS-Windows
822a2d0 Fix :type 'group' in defcustom
a731c56 Fix NS fringe bitmap drawing bug (bug#33864)
0c52459 Fix commentary in dispnew.c
c9fdd1b Improve accept-process-process doc
9578c2a Fix a simple bug in display-buffer-use-some-frame
0f9be72 Clarify thread switching while waiting for process output
24ddea0 Improve process doc. with respect to handling of large input ...
2931016 ; Cosmetic changes in etc/NEWS
85516b8 Minor copyedits in landmark.el

# Conflicts:
#	etc/NEWS

1 files changed, 13 insertions, 9 deletions

diff --git a/src/process.c b/src/process.c
index 34045b4977a..e9b12b1f2dc 100644
--- a/src/process.c
+++ b/src/process.c
@@ -4607,8 +4607,8 @@ DEFUN ("accept-process-output", Faccept_process_output, Saccept_process_output,
        0, 4, 0,
        doc: /* Allow any pending output from subprocesses to be read by Emacs.
 It is given to their filter functions.
-Optional argument PROCESS means do not return until output has been
-received from PROCESS.
+Optional argument PROCESS means to return only after output is
+received from PROCESS or PROCESS closes the connection.
 
 Optional second argument SECONDS and third argument MILLISEC
 specify a timeout; return after that much time even if there is
@@ -4620,7 +4620,8 @@ If optional fourth argument JUST-THIS-ONE is non-nil, accept output
 from PROCESS only, suspending reading output from other processes.
 If JUST-THIS-ONE is an integer, don't run any timers either.
 Return non-nil if we received any output from PROCESS (or, if PROCESS
-is nil, from any process) before the timeout expired.  */)
+is nil, from any process) before the timeout expired or the
+corresponding connection was closed.  */)
   (Lisp_Object process, Lisp_Object seconds, Lisp_Object millisec,
    Lisp_Object just_this_one)
 {
@@ -6463,9 +6464,11 @@ DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region,
 PROCESS may be a process, a buffer, the name of a process or buffer, or
 nil, indicating the current buffer's process.
 Called from program, takes three arguments, PROCESS, START and END.
-If the region is more than 500 characters long,
-it is sent in several bunches.  This may happen even for shorter regions.
-Output from processes can arrive in between bunches.
+If the region is larger than the input buffer of the process (the
+length of which depends on the process connection type and the
+operating system), it is sent in several bunches.  This may happen
+even for shorter regions.  Output from processes can arrive in between
+bunches.
 
 If PROCESS is a non-blocking network process that hasn't been fully
 set up yet, this function will block until socket setup has completed.  */)
@@ -6496,9 +6499,10 @@ DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string,
        doc: /* Send PROCESS the contents of STRING as input.
 PROCESS may be a process, a buffer, the name of a process or buffer, or
 nil, indicating the current buffer's process.
-If STRING is more than 500 characters long,
-it is sent in several bunches.  This may happen even for shorter strings.
-Output from processes can arrive in between bunches.
+If STRING is larger than the input buffer of the process (the length
+of which depends on the process connection type and the operating
+system), it is sent in several bunches.  This may happen even for
+shorter strings.  Output from processes can arrive in between bunches.
 
 If PROCESS is a non-blocking network process that hasn't been fully
 set up yet, this function will block until socket setup has completed.  */)