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

4 files changed, 20 insertions, 9 deletions

diff --git a/lisp/files.el b/lisp/files.el
index 448df62710c..fb09c96c47e 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -802,9 +802,15 @@ The path separator is colon in GNU and GNU-like systems."
     (setq cd-path (or (parse-colon-path (getenv "CDPATH"))
                       (list "./"))))
   (cd-absolute
-   (or (locate-file dir cd-path nil
-                    (lambda (f) (and (file-directory-p f) 'dir-ok)))
-       (error "No such directory found via CDPATH environment variable"))))
+   (or
+    ;; locate-file doesn't support remote file names, so detect them
+    ;; and support them here by hand.
+    (and (file-remote-p (expand-file-name dir))
+         (file-accessible-directory-p (expand-file-name dir))
+         (expand-file-name dir))
+    (locate-file dir cd-path nil
+                 (lambda (f) (and (file-directory-p f) 'dir-ok)))
+    (error "No such directory found via CDPATH environment variable"))))
 
 (defun directory-files-recursively (dir regexp &optional include-directories)
   "Return list of all files under DIR that have file names matching REGEXP.
diff --git a/lisp/obsolete/landmark.el b/lisp/obsolete/landmark.el
index effea95cd8f..c4c4c7a20f6 100644
--- a/lisp/obsolete/landmark.el
+++ b/lisp/obsolete/landmark.el
@@ -2,7 +2,7 @@
 
 ;; Copyright (C) 1996-1997, 2000-2018 Free Software Foundation, Inc.
 
-;; Author: Terrence Brannon (was: <brannon@rana.usc.edu>)
+;; Author: Terrence Brannon <metaperl@gmail.com>
 ;; Created: December 16, 1996 - first release to usenet
 ;; Keywords: games, neural network, adaptive search, chemotaxis
 ;; Version: 1.0
@@ -36,7 +36,7 @@
 ;; the smell of the tree increases, then the weights in the robot's
 ;; brain are adjusted to encourage this odor-driven behavior in the
 ;; future. If the smell of the tree decreases, the robots weights are
-;; adjusted to discourage a correct move.
+;; adjusted to discourage that odor-driven behavior.
 
 ;; In laymen's terms, the search space is initially flat. The point
 ;; of training is to "turn up the edges of the search space" so that
@@ -53,6 +53,13 @@
 ;; a single move, one moves east,west and south, then both east and
 ;; west will be improved when they shouldn't
 
+;; The source code was developed as part of a course on Brain Theory
+;; and Neural Networks at the University of Southern California. The
+;; original problem description and solution appeared in 1981 in the
+;; paper "Landmark Learning: An Illustration of Associative
+;; Search" authored by Andrew G. Barto and Richard S. Sutton and
+;; published to Biological Cybernetics.
+
 ;; Many thanks to Yuri Pryadkin <yuri@rana.usc.edu> for this
 ;; concise problem description.
 
diff --git a/lisp/wid-edit.el b/lisp/wid-edit.el
index bee7f8069ee..29a7a44f2aa 100644
--- a/lisp/wid-edit.el
+++ b/lisp/wid-edit.el
@@ -2746,7 +2746,7 @@ Return an alist of (TYPE MATCH)."
   "A widget which groups other widgets inside."
   :convert-widget 'widget-types-convert-widget
   :copy 'widget-types-copy
-  :format "%v"
+  :format ":\n%v"
   :value-create 'widget-group-value-create
   :value-get 'widget-editable-list-value-get
   :default-get 'widget-group-default-get
diff --git a/lisp/window.el b/lisp/window.el
index 4e72d343674..f1e56643671 100644
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -7182,9 +7182,7 @@ that allows the selected frame)."
           (or (cdr (assq 'frame-predicate alist))
               (lambda (frame)
                 (and (not (eq frame (selected-frame)))
-                     (not (window-dedicated-p
-                           (or (get-lru-window frame)
-                               (frame-first-window frame))))))))
+                     (get-lru-window frame)))))
          (frame (car (filtered-frame-list predicate)))
          (window
           (and frame