Merge branch 'master' of git.sv.gnu.org:/srv/git/emacs into feature/pgtk

24 files changed, 217 insertions, 207 deletions

diff --git a/src/buffer.c b/src/buffer.c
index 81f7d922fdb..71ad5edd527 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -2602,8 +2602,6 @@ current buffer is cleared.  */)
 	      p += bytes, pos += bytes;
 	    }
 	}
-      if (narrowed)
-	Fnarrow_to_region (make_fixnum (begv), make_fixnum (zv));
     }
   else
     {
@@ -2682,9 +2680,6 @@ current buffer is cleared.  */)
       if (pt != PT)
 	TEMP_SET_PT (pt);
 
-      if (narrowed)
-	Fnarrow_to_region (make_fixnum (begv), make_fixnum (zv));
-
       /* Do this first, so that chars_in_text asks the right question.
 	 set_intervals_multibyte needs it too.  */
       bset_enable_multibyte_characters (current_buffer, Qt);
@@ -6385,10 +6380,3 @@ nil NORECORD argument since it may lead to infinite recursion.  */);
 
   Fput (intern_c_string ("erase-buffer"), Qdisabled, Qt);
 }
-
-void
-keys_of_buffer (void)
-{
-  initial_define_key (control_x_map, 'b', "switch-to-buffer");
-  initial_define_key (control_x_map, 'k', "kill-buffer");
-}
diff --git a/src/callproc.c b/src/callproc.c
index 8d2a5619eb8..1da315bef18 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -314,6 +314,7 @@ call_process (ptrdiff_t nargs, Lisp_Object *args, int filefd,
 #ifdef MSDOS	/* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
   char *tempfile = NULL;
 #else
+  sigset_t oldset;
   pid_t pid = -1;
 #endif
   int child_errno;
@@ -601,9 +602,12 @@ call_process (ptrdiff_t nargs, Lisp_Object *args, int filefd,
 
 #ifndef MSDOS
 
+  block_input ();
+  block_child_signal (&oldset);
+
   child_errno
     = emacs_spawn (&pid, filefd, fd_output, fd_error, new_argv, env,
-                   SSDATA (current_dir), NULL);
+                   SSDATA (current_dir), NULL, &oldset);
   eassert ((child_errno == 0) == (0 < pid));
 
   if (pid > 0)
@@ -624,6 +628,9 @@ call_process (ptrdiff_t nargs, Lisp_Object *args, int filefd,
 	}
     }
 
+  unblock_child_signal (&oldset);
+  unblock_input ();
+
   if (pid < 0)
     report_file_errno (CHILD_SETUP_ERROR_DESC, Qnil, child_errno);
 
@@ -1227,17 +1234,21 @@ child_setup (int in, int out, int err, char **new_argv, char **env,
    process image file ARGV[0].  Use ENVP for the environment block for
    the new process.  Use CWD as working directory for the new process.
    If PTY is not NULL, it must be a pseudoterminal device.  If PTY is
-   NULL, don't perform any terminal setup.  */
+   NULL, don't perform any terminal setup.  OLDSET must be a pointer
+   to a signal set initialized by `block_child_signal'.  Before
+   calling this function, call `block_input' and `block_child_signal';
+   afterwards, call `unblock_input' and `unblock_child_signal'.  Be
+   sure to call `unblock_child_signal' only after registering NEWPID
+   in a list where `handle_child_signal' can find it!  */
 
 int
 emacs_spawn (pid_t *newpid, int std_in, int std_out, int std_err,
-             char **argv, char **envp, const char *cwd, const char *pty)
+             char **argv, char **envp, const char *cwd,
+             const char *pty, const sigset_t *oldset)
 {
-  sigset_t oldset;
   int pid;
 
-  block_input ();
-  block_child_signal (&oldset);
+  eassert (input_blocked_p ());
 
 #ifndef WINDOWSNT
   /* vfork, and prevent local vars from being clobbered by the vfork.  */
@@ -1249,6 +1260,7 @@ emacs_spawn (pid_t *newpid, int std_in, int std_out, int std_err,
   int volatile stdout_volatile = std_out;
   int volatile stderr_volatile = std_err;
   char **volatile envp_volatile = envp;
+  const sigset_t *volatile oldset_volatile = oldset;
 
 #ifdef DARWIN_OS
   /* Darwin doesn't let us run setsid after a vfork, so use fork when
@@ -1270,6 +1282,7 @@ emacs_spawn (pid_t *newpid, int std_in, int std_out, int std_err,
   std_out = stdout_volatile;
   std_err = stderr_volatile;
   envp = envp_volatile;
+  oldset = oldset_volatile;
 
   if (pid == 0)
 #endif /* not WINDOWSNT */
@@ -1364,7 +1377,7 @@ emacs_spawn (pid_t *newpid, int std_in, int std_out, int std_err,
 #endif
 
       /* Stop blocking SIGCHLD in the child.  */
-      unblock_child_signal (&oldset);
+      unblock_child_signal (oldset);
 
       if (pty_flag)
 	child_setup_tty (std_out);
@@ -1382,10 +1395,6 @@ emacs_spawn (pid_t *newpid, int std_in, int std_out, int std_err,
 
   int vfork_error = pid < 0 ? errno : 0;
 
-  /* Stop blocking in the parent.  */
-  unblock_child_signal (&oldset);
-  unblock_input ();
-
   if (pid < 0)
     {
       eassert (0 < vfork_error);
diff --git a/src/casefiddle.c b/src/casefiddle.c
index a948bb3bc88..a7a25414909 100644
--- a/src/casefiddle.c
+++ b/src/casefiddle.c
@@ -682,16 +682,3 @@ Called with one argument METHOD which can be:
   defsubr (&Sdowncase_word);
   defsubr (&Scapitalize_word);
 }
-
-void
-keys_of_casefiddle (void)
-{
-  initial_define_key (control_x_map, Ctl ('U'), "upcase-region");
-  Fput (intern ("upcase-region"), Qdisabled, Qt);
-  initial_define_key (control_x_map, Ctl ('L'), "downcase-region");
-  Fput (intern ("downcase-region"), Qdisabled, Qt);
-
-  initial_define_key (meta_map, 'u', "upcase-word");
-  initial_define_key (meta_map, 'l', "downcase-word");
-  initial_define_key (meta_map, 'c', "capitalize-word");
-}
diff --git a/src/cmds.c b/src/cmds.c
index 798fd68a920..1547db80e88 100644
--- a/src/cmds.c
+++ b/src/cmds.c
@@ -529,24 +529,3 @@ This is run after inserting the character.  */);
   defsubr (&Sdelete_char);
   defsubr (&Sself_insert_command);
 }
-
-void
-keys_of_cmds (void)
-{
-  int n;
-
-  initial_define_key (global_map, Ctl ('I'), "self-insert-command");
-  for (n = 040; n < 0177; n++)
-    initial_define_key (global_map, n, "self-insert-command");
-#ifdef MSDOS
-  for (n = 0200; n < 0240; n++)
-    initial_define_key (global_map, n, "self-insert-command");
-#endif
-  for (n = 0240; n < 0400; n++)
-    initial_define_key (global_map, n, "self-insert-command");
-
-  initial_define_key (global_map, Ctl ('A'), "beginning-of-line");
-  initial_define_key (global_map, Ctl ('B'), "backward-char");
-  initial_define_key (global_map, Ctl ('E'), "end-of-line");
-  initial_define_key (global_map, Ctl ('F'), "forward-char");
-}
diff --git a/src/commands.h b/src/commands.h
index a09858d050d..2205ebf7d39 100644
--- a/src/commands.h
+++ b/src/commands.h
@@ -23,14 +23,6 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #define Ctl(c) ((c)&037)
 
-/* Define the names of keymaps, just so people can refer to them in
-   calls to initial_define_key.  These should *not* be used after
-   initialization; use-global-map doesn't affect these; it sets
-   current_global_map instead.  */
-extern Lisp_Object global_map;
-extern Lisp_Object meta_map;
-extern Lisp_Object control_x_map;
-
 /* If not Qnil, this is a switch-frame event which we decided to put
    off until the end of a key sequence.  This should be read as the
    next command input, after any Vunread_command_events.
diff --git a/src/emacs.c b/src/emacs.c
index 61d2023b4da..461d1b72e4c 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -1969,12 +1969,7 @@ Using an Emacs configured with --with-x-toolkit=lucid does not have this problem
       syms_of_json ();
 #endif
 
-      keys_of_casefiddle ();
-      keys_of_cmds ();
-      keys_of_buffer ();
       keys_of_keyboard ();
-      keys_of_keymap ();
-      keys_of_window ();
     }
   else
     {
diff --git a/src/keyboard.c b/src/keyboard.c
index 2446f078fde..4540b3179b5 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -285,7 +285,7 @@ bool input_pending;
    with the input rate, but if it can keep up just enough that there's no
    input_pending when we begin the command, then redisplay is not skipped
    which results in better feedback to the user.  */
-static bool input_was_pending;
+bool input_was_pending;
 
 /* Circular buffer for pre-read keyboard input.  */
 
@@ -12396,12 +12396,6 @@ syms_of_keyboard_for_pdumper (void)
 void
 keys_of_keyboard (void)
 {
-  initial_define_key (global_map, Ctl ('Z'), "suspend-emacs");
-  initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs");
-  initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit");
-  initial_define_key (global_map, Ctl (']'), "abort-recursive-edit");
-  initial_define_key (meta_map, 'x', "execute-extended-command");
-
   initial_define_lispy_key (Vspecial_event_map, "delete-frame",
 			    "handle-delete-frame");
 #ifdef HAVE_NTGUI
diff --git a/src/keyboard.h b/src/keyboard.h
index 91c6f4604f9..8bdffaa2bff 100644
--- a/src/keyboard.h
+++ b/src/keyboard.h
@@ -432,7 +432,7 @@ extern int parse_solitary_modifier (Lisp_Object symbol);
 extern Lisp_Object real_this_command;
 
 extern int quit_char;
-
+extern bool input_was_pending;
 extern unsigned int timers_run;
 
 extern bool menu_separator_name_p (const char *);
diff --git a/src/keymap.c b/src/keymap.c
index 1eeea81f627..1197f6fd4a5 100644
--- a/src/keymap.c
+++ b/src/keymap.c
@@ -59,22 +59,6 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 
 Lisp_Object current_global_map;	/* Current global keymap.  */
 
-Lisp_Object global_map;		/* Default global key bindings.  */
-
-Lisp_Object meta_map;		/* The keymap used for globally bound
-				   ESC-prefixed default commands.  */
-
-Lisp_Object control_x_map;	/* The keymap used for globally bound
-				   C-x-prefixed default commands.  */
-
-				/* The keymap used by the minibuf for local
-				   bindings when spaces are allowed in the
-				   minibuf.  */
-
-				/* The keymap used by the minibuf for local
-				   bindings when spaces are not encouraged
-				   in the minibuf.  */
-
 /* Alist of elements like (DEL . "\d").  */
 static Lisp_Object exclude_keys;
 
@@ -140,19 +124,6 @@ in case you use it as a menu with `x-popup-menu'.  */)
   return list1 (Qkeymap);
 }
 
-/* This function is used for installing the standard key bindings
-   at initialization time.
-
-   For example:
-
-   initial_define_key (control_x_map, Ctl('X'), "exchange-point-and-mark");  */
-
-void
-initial_define_key (Lisp_Object keymap, int key, const char *defname)
-{
-  store_in_keymap (keymap, make_fixnum (key), intern_c_string (defname));
-}
-
 void
 initial_define_lispy_key (Lisp_Object keymap, const char *keyname, const char *defname)
 {
@@ -1741,28 +1712,6 @@ bindings; see the description of `lookup-key' for more details about this.  */)
   return Flist (j, maps);
 }
 
-DEFUN ("define-prefix-command", Fdefine_prefix_command, Sdefine_prefix_command, 1, 3, 0,
-       doc: /* Define COMMAND as a prefix command.  COMMAND should be a symbol.
-A new sparse keymap is stored as COMMAND's function definition and its
-value.
-This prepares COMMAND for use as a prefix key's binding.
-If a second optional argument MAPVAR is given, it should be a symbol.
-The map is then stored as MAPVAR's value instead of as COMMAND's
-value; but COMMAND is still defined as a function.
-The third optional argument NAME, if given, supplies a menu name
-string for the map.  This is required to use the keymap as a menu.
-This function returns COMMAND.  */)
-  (Lisp_Object command, Lisp_Object mapvar, Lisp_Object name)
-{
-  Lisp_Object map = Fmake_sparse_keymap (name);
-  Ffset (command, map);
-  if (!NILP (mapvar))
-    Fset (mapvar, map);
-  else
-    Fset (command, map);
-  return command;
-}
-
 DEFUN ("use-global-map", Fuse_global_map, Suse_global_map, 1, 1, 0,
        doc: /* Select KEYMAP as the global keymap.  */)
   (Lisp_Object keymap)
@@ -2217,11 +2166,21 @@ See `text-char-description' for describing character codes.  */)
     {
       if (NILP (no_angles))
 	{
-	  Lisp_Object result;
-	  char *buffer = SAFE_ALLOCA (sizeof "<>"
-				      + SBYTES (SYMBOL_NAME (key)));
-	  esprintf (buffer, "<%s>", SDATA (SYMBOL_NAME (key)));
-	  result = build_string (buffer);
+	  Lisp_Object namestr = SYMBOL_NAME (key);
+	  const char *sym = SSDATA (namestr);
+	  ptrdiff_t len = SBYTES (namestr);
+	  /* Find the extent of the modifier prefix, like "C-M-". */
+	  int i = 0;
+	  while (i < len - 3 && sym[i + 1] == '-' && strchr ("CMSsHA", sym[i]))
+	    i += 2;
+	  /* First I bytes of SYM are modifiers; put <> around the rest. */
+	  char *buffer = SAFE_ALLOCA (len + 3);
+	  memcpy (buffer, sym, i);
+	  buffer[i] = '<';
+	  memcpy (buffer + i + 1, sym + i, len - i);
+	  buffer [len + 1] = '>';
+	  buffer [len + 2] = '\0';
+	  Lisp_Object result = build_string (buffer);
 	  SAFE_FREE ();
 	  return result;
 	}
@@ -3195,21 +3154,9 @@ syms_of_keymap (void)
      Each one is the value of a Lisp variable, and is also
      pointed to by a C variable */
 
-  global_map = Fmake_keymap (Qnil);
-  Fset (intern_c_string ("global-map"), global_map);
-
-  current_global_map = global_map;
-  staticpro (&global_map);
+  current_global_map = Qnil;
   staticpro (&current_global_map);
 
-  meta_map = Fmake_keymap (Qnil);
-  Fset (intern_c_string ("esc-map"), meta_map);
-  Ffset (intern_c_string ("ESC-prefix"), meta_map);
-
-  control_x_map = Fmake_keymap (Qnil);
-  Fset (intern_c_string ("ctl-x-map"), control_x_map);
-  Ffset (intern_c_string ("Control-X-prefix"), control_x_map);
-
   exclude_keys = pure_list
     (pure_cons (build_pure_c_string ("DEL"), build_pure_c_string ("\\d")),
      pure_cons (build_pure_c_string ("TAB"), build_pure_c_string ("\\t")),
@@ -3311,7 +3258,6 @@ be preferred.  */);
   defsubr (&Sminor_mode_key_binding);
   defsubr (&Sdefine_key);
   defsubr (&Slookup_key);
-  defsubr (&Sdefine_prefix_command);
   defsubr (&Suse_global_map);
   defsubr (&Suse_local_map);
   defsubr (&Scurrent_local_map);
@@ -3328,10 +3274,3 @@ be preferred.  */);
   defsubr (&Swhere_is_internal);
   defsubr (&Sdescribe_buffer_bindings);
 }
-
-void
-keys_of_keymap (void)
-{
-  initial_define_key (global_map, 033, "ESC-prefix");
-  initial_define_key (global_map, Ctl ('X'), "Control-X-prefix");
-}
diff --git a/src/keymap.h b/src/keymap.h
index 072c09348e2..f417301c8f2 100644
--- a/src/keymap.h
+++ b/src/keymap.h
@@ -37,10 +37,8 @@ extern char *push_key_description (EMACS_INT, char *);
 extern Lisp_Object access_keymap (Lisp_Object, Lisp_Object, bool, bool, bool);
 extern Lisp_Object get_keymap (Lisp_Object, bool, bool);
 extern ptrdiff_t current_minor_maps (Lisp_Object **, Lisp_Object **);
-extern void initial_define_key (Lisp_Object, int, const char *);
 extern void initial_define_lispy_key (Lisp_Object, const char *, const char *);
 extern void syms_of_keymap (void);
-extern void keys_of_keymap (void);
 
 typedef void (*map_keymap_function_t)
      (Lisp_Object key, Lisp_Object val, Lisp_Object args, void *data);
diff --git a/src/lisp.h b/src/lisp.h
index 0ad788cff84..d139df93424 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -1478,8 +1478,8 @@ struct Lisp_String
   {
     struct
     {
-      ptrdiff_t size;
-      ptrdiff_t size_byte;
+      ptrdiff_t size;           /* MSB is used as the markbit.  */
+      ptrdiff_t size_byte;      /* Set to -1 for unibyte strings.  */
       INTERVAL intervals;	/* Text properties in this string.  */
       unsigned char *data;
     } s;
@@ -3561,7 +3561,6 @@ extern void swap_in_global_binding (struct Lisp_Symbol *);
 
 /* Defined in cmds.c */
 extern void syms_of_cmds (void);
-extern void keys_of_cmds (void);
 
 /* Defined in coding.c.  */
 extern Lisp_Object detect_coding_system (const unsigned char *, ptrdiff_t,
@@ -4262,7 +4261,6 @@ extern Lisp_Object get_truename_buffer (Lisp_Object);
 extern void init_buffer_once (void);
 extern void init_buffer (void);
 extern void syms_of_buffer (void);
-extern void keys_of_buffer (void);
 
 /* Defined in marker.c.  */
 
@@ -4359,7 +4357,6 @@ extern void syms_of_callint (void);
 /* Defined in casefiddle.c.  */
 
 extern void syms_of_casefiddle (void);
-extern void keys_of_casefiddle (void);
 
 /* Defined in casetab.c.  */
 
@@ -4498,8 +4495,8 @@ extern void setup_process_coding_systems (Lisp_Object);
 # define CHILD_SETUP_ERROR_DESC "Doing vfork"
 #endif
 
-extern int emacs_spawn (pid_t *, int, int, int, char **, char **, const char *,
-			const char *);
+extern int emacs_spawn (pid_t *, int, int, int, char **, char **,
+                        const char *, const char *, const sigset_t *);
 extern char **make_environment_block (Lisp_Object);
 extern void init_callproc_1 (void);
 extern void init_callproc (void);
diff --git a/src/minibuf.c b/src/minibuf.c
index 8b235690199..5ee440f6622 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -2013,9 +2013,6 @@ syms_of_minibuf (void)
   DEFSYM (Qminibuffer_setup_hook, "minibuffer-setup-hook");
   DEFSYM (Qminibuffer_exit_hook, "minibuffer-exit-hook");
 
-  /* The maximum length of a minibuffer history.  */
-  DEFSYM (Qhistory_length, "history-length");
-
   DEFSYM (Qcurrent_input_method, "current-input-method");
   DEFSYM (Qactivate_input_method, "activate-input-method");
   DEFSYM (Qcase_fold_search, "case-fold-search");
diff --git a/src/nsfns.m b/src/nsfns.m
index ee2daea0723..ae114f83e4d 100644
--- a/src/nsfns.m
+++ b/src/nsfns.m
@@ -1485,14 +1485,14 @@ Some window managers may refuse to restack windows.  */)
 
   if (FRAME_NS_VIEW (f1) && FRAME_NS_VIEW (f2))
     {
-      NSWindow *window = [FRAME_NS_VIEW (f1) window];
-      NSInteger window2 = [[FRAME_NS_VIEW (f2) window] windowNumber];
-      NSWindowOrderingMode flag = NILP (above) ? NSWindowBelow : NSWindowAbove;
+      EmacsWindow *window = (EmacsWindow *)[FRAME_NS_VIEW (f1) window];
+      NSWindow *window2 = [FRAME_NS_VIEW (f2) window];
+      BOOL flag = !NILP (above);
 
-      [window orderWindow: flag
-               relativeTo: window2];
-
-      return Qt;
+      if ([window restackWindow:window2 above:!NILP (above)])
+        return Qt;
+      else
+        return Qnil;
     }
   else
     {
diff --git a/src/nsmenu.m b/src/nsmenu.m
index 9b56958100a..8086f56854e 100644
--- a/src/nsmenu.m
+++ b/src/nsmenu.m
@@ -145,6 +145,10 @@ ns_update_menubar (struct frame *f, bool deep_p)
   t = -(1000*tb.time+tb.millitm);
 #endif
 
+#ifdef NS_IMPL_GNUSTEP
+  deep_p = 1; /* See comment in menuNeedsUpdate.  */
+#endif
+
   if (deep_p)
     {
       /* Make a widget-value tree representing the entire menu trees.  */
@@ -433,21 +437,22 @@ set_frame_menubar (struct frame *f, bool first_time, bool deep_p)
 }
 
 
-/* Delegate method called when a submenu is being opened: run a 'deep' call
-   to set_frame_menubar.  */
-
-/* TODO: GNUstep calls this method when the menu is still being built
-   which throws it into an infinite loop.  One possible solution is to
-   use menuWillOpen instead, but the Apple docs explicitly warn
-   against changing the contents of the menu in it.  I don't know what
-   the right thing to do for GNUstep is.  */
+/* Delegate method called when a submenu is being opened: run a 'deep'
+   call to ns_update_menubar.  */
 - (void)menuNeedsUpdate: (NSMenu *)menu
 {
   if (!FRAME_LIVE_P (SELECTED_FRAME ()))
     return;
 
+#ifdef NS_IMPL_COCOA
+/* TODO: GNUstep calls this method when the menu is still being built
+   which results in a recursive stack overflow.  One possible solution
+   is to use menuWillOpen instead, but the Apple docs explicitly warn
+   against changing the contents of the menu in it.  I don't know what
+   the right thing to do for GNUstep is.  */
   if (needsUpdate)
     ns_update_menubar (SELECTED_FRAME (), true);
+#endif
 }
 
 
diff --git a/src/nsterm.h b/src/nsterm.h
index 3fb64494f76..2c9d8e85ba9 100644
--- a/src/nsterm.h
+++ b/src/nsterm.h
@@ -498,6 +498,7 @@ typedef id instancetype;
   NSPoint grabOffset;
 }
 
+- (BOOL)restackWindow:(NSWindow *)win above:(BOOL)above;
 - (void)setAppearance;
 @end
 
diff --git a/src/nsterm.m b/src/nsterm.m
index 27310639508..2defb9e2eec 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -8693,6 +8693,112 @@ not_in_argv (NSString *arg)
 
 @implementation EmacsWindow
 
+/* It seems the only way to reorder child frames is by removing them
+   from the parent and then reattaching them in the correct order.  */
+
+- (void)orderFront:(id)sender
+{
+  NSTRACE ("[EmacsWindow orderFront:]");
+
+  NSWindow *parent = [self parentWindow];
+  if (parent)
+    {
+      [parent removeChildWindow:self];
+      [parent addChildWindow:self ordered:NSWindowAbove];
+    }
+  else
+    [super orderFront:sender];
+}
+
+- (void)makeKeyAndOrderFront:(id)sender
+{
+  NSTRACE ("[EmacsWindow makeKeyAndOrderFront:]");
+
+  if ([self parentWindow])
+    {
+      [self orderFront:sender];
+      [self makeKeyWindow];
+    }
+  else
+    [super makeKeyAndOrderFront:sender];
+}
+
+
+/* The array returned by [NSWindow parentWindow] may already be
+   sorted, but the documentation doesn't tell us whether or not it is,
+   so to be safe we'll sort it.  */
+NSInteger nswindow_orderedIndex_sort (id w1, id w2, void *c)
+{
+  NSInteger i1 = [w1 orderedIndex];
+  NSInteger i2 = [w2 orderedIndex];
+
+  if (i1 > i2)
+    return NSOrderedAscending;
+  if (i1 < i2)
+    return NSOrderedDescending;
+
+  return NSOrderedSame;
+}
+
+- (void)orderBack:(id)sender
+{
+  NSTRACE ("[EmacsWindow orderBack:]");
+
+  NSWindow *parent = [self parentWindow];
+  if (parent)
+    {
+      NSArray *children = [[parent childWindows]
+                            sortedArrayUsingFunction:nswindow_orderedIndex_sort
+                                              context:nil];
+      [parent removeChildWindow:self];
+      [parent addChildWindow:self ordered:NSWindowAbove];
+
+      for (NSWindow *win in children)
+        {
+          if (win != self)
+            {
+              [parent removeChildWindow:win];
+              [parent addChildWindow:win ordered:NSWindowAbove];
+            }
+        }
+    }
+  else
+    [super orderBack:sender];
+}
+
+- (BOOL)restackWindow:(NSWindow *)win above:(BOOL)above
+{
+  NSTRACE ("[EmacsWindow restackWindow:above:]");
+
+  /* If parent windows don't match we can't restack these frames
+     without changing the parents.  */
+  if ([self parentWindow] != [win parentWindow])
+    return NO;
+  else if (![self parentWindow])
+    [self orderWindow:(above ? NSWindowAbove : NSWindowBelow)
+           relativeTo:[win windowNumber]];
+  else
+    {
+      NSInteger index;
+      NSWindow *parent = [self parentWindow];
+      NSMutableArray *children = [[[parent childWindows]
+                                   sortedArrayUsingFunction:nswindow_orderedIndex_sort
+                                                    context:nil]
+                                   mutableCopy];
+      [children removeObject:self];
+      index = [children indexOfObject:win];
+      [children insertObject:self atIndex:(above ? index+1 : index)];
+
+      for (NSWindow *w in children)
+        {
+          [parent removeChildWindow:w];
+          [parent addChildWindow:w ordered:NSWindowAbove];
+        }
+    }
+
+  return YES;
+}
+
 #ifdef NS_IMPL_COCOA
 - (id)accessibilityAttributeValue:(NSString *)attribute
 {
diff --git a/src/pdumper.c b/src/pdumper.c
index 6956ee36829..116cc28dbba 100644
--- a/src/pdumper.c
+++ b/src/pdumper.c
@@ -2058,7 +2058,7 @@ dump_interval_tree (struct dump_context *ctx,
 static dump_off
 dump_string (struct dump_context *ctx, const struct Lisp_String *string)
 {
-#if CHECK_STRUCTS && !defined (HASH_Lisp_String_86FEA6EC7C)
+#if CHECK_STRUCTS && !defined (HASH_Lisp_String_348C2B2FDB)
 # error "Lisp_String changed. See CHECK_STRUCTS comment in config.h."
 #endif
   /* If we have text properties, write them _after_ the string so that
diff --git a/src/print.c b/src/print.c
index 94a8bcbf882..14af9195475 100644
--- a/src/print.c
+++ b/src/print.c
@@ -1557,7 +1557,8 @@ print_vectorlike (Lisp_Object obj, Lisp_Object printcharfun, bool escapeflag,
 	/* Implement a readable output, e.g.:
 	  #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */
 	/* Always print the size.  */
-	int len = sprintf (buf, "#s(hash-table size %"pD"d", ASIZE (h->next));
+	int len = sprintf (buf, "#s(hash-table size %"pD"d",
+                           HASH_TABLE_SIZE (h));
 	strout (buf, len, len, printcharfun);
 
 	if (!NILP (h->test.name))
diff --git a/src/process.c b/src/process.c
index 3550f623c6a..25883f911f1 100644
--- a/src/process.c
+++ b/src/process.c
@@ -692,8 +692,7 @@ status_convert (int w)
   if (WIFSTOPPED (w))
     return Fcons (Qstop, Fcons (make_fixnum (WSTOPSIG (w)), Qnil));
   else if (WIFEXITED (w))
-    return Fcons (Qexit, Fcons (make_fixnum (WEXITSTATUS (w)),
-				WCOREDUMP (w) ? Qt : Qnil));
+    return Fcons (Qexit, Fcons (make_fixnum (WEXITSTATUS (w)), Qnil));
   else if (WIFSIGNALED (w))
     return Fcons (Qsignal, Fcons (make_fixnum (WTERMSIG (w)),
 				  WCOREDUMP (w) ? Qt : Qnil));
@@ -2059,6 +2058,7 @@ create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir)
   bool pty_flag = 0;
   char pty_name[PTY_NAME_SIZE];
   Lisp_Object lisp_pty_name = Qnil;
+  sigset_t oldset;
 
   inchannel = outchannel = -1;
 
@@ -2139,13 +2139,16 @@ create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir)
   setup_process_coding_systems (process);
   char **env = make_environment_block (current_dir);
 
+  block_input ();
+  block_child_signal (&oldset);
+
   pty_flag = p->pty_flag;
   eassert (pty_flag == ! NILP (lisp_pty_name));
 
   vfork_errno
     = emacs_spawn (&pid, forkin, forkout, forkerr, new_argv, env,
                    SSDATA (current_dir),
-                   pty_flag ? SSDATA (lisp_pty_name) : NULL);
+                   pty_flag ? SSDATA (lisp_pty_name) : NULL, &oldset);
 
   eassert ((vfork_errno == 0) == (0 < pid));
 
@@ -2153,6 +2156,10 @@ create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir)
   if (pid >= 0)
     p->alive = 1;
 
+  /* Stop blocking in the parent.  */
+  unblock_child_signal (&oldset);
+  unblock_input ();
+
   /* Environment block no longer needed.  */
   unbind_to (count, Qnil);
 
diff --git a/src/terminfo.c b/src/terminfo.c
index 15aff317f15..a9c9572bbb2 100644
--- a/src/terminfo.c
+++ b/src/terminfo.c
@@ -23,10 +23,10 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Define these variables that serve as global parameters to termcap,
    so that we do not need to conditionalize the places in Emacs
-   that set them.  But don't do that for terminfo, as that could
-   cause link errors when using -fno-common.  */
+   that set them.  But don't do that if terminfo defines them, as that
+   could cause link errors when using -fno-common.  */
 
-#if !TERMINFO
+#ifndef TERMINFO_DEFINES_BC
 char *UP, *BC, PC;
 #endif
 
diff --git a/src/window.c b/src/window.c
index ba8682eed7c..5e78aa400b5 100644
--- a/src/window.c
+++ b/src/window.c
@@ -8100,6 +8100,18 @@ and scrolling positions.  */)
     return Qt;
   return Qnil;
 }
+
+DEFUN ("window-bump-use-time", Fwindow_bump_use_time,
+       Swindow_bump_use_time, 1, 1, 0,
+       doc: /* Mark WINDOW as having been recently used.  */)
+  (Lisp_Object window)
+{
+  struct window *w = decode_valid_window (window);
+
+  w->use_time = ++window_select_count;
+  return Qnil;
+}
+
 
 
 static void init_window_once_for_pdumper (void);
@@ -8573,6 +8585,7 @@ displayed after a scrolling operation to be somewhat inaccurate.  */);
   defsubr (&Swindow_vscroll);
   defsubr (&Sset_window_vscroll);
   defsubr (&Scompare_window_configurations);
+  defsubr (&Swindow_bump_use_time);
   defsubr (&Swindow_list);
   defsubr (&Swindow_list_1);
   defsubr (&Swindow_prev_buffers);
@@ -8583,14 +8596,3 @@ displayed after a scrolling operation to be somewhat inaccurate.  */);
   defsubr (&Swindow_parameter);
   defsubr (&Sset_window_parameter);
 }
-
-void
-keys_of_window (void)
-{
-  initial_define_key (control_x_map, '<', "scroll-left");
-  initial_define_key (control_x_map, '>', "scroll-right");
-
-  initial_define_key (global_map, Ctl ('V'), "scroll-up-command");
-  initial_define_key (meta_map, Ctl ('V'), "scroll-other-window");
-  initial_define_key (meta_map, 'v', "scroll-down-command");
-}
diff --git a/src/window.h b/src/window.h
index fba98f438c4..fbdec0df997 100644
--- a/src/window.h
+++ b/src/window.h
@@ -1202,7 +1202,6 @@ extern bool window_outdated (struct window *);
 extern void init_window_once (void);
 extern void init_window (void);
 extern void syms_of_window (void);
-extern void keys_of_window (void);
 /* Move cursor to row/column position VPOS/HPOS, pixel coordinates
    Y/X. HPOS/VPOS are window-relative row and column numbers and X/Y
    are window-relative pixel positions.  This is always done during
diff --git a/src/xdisp.c b/src/xdisp.c
index b0f218dcb35..d070c5ae5cd 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -4262,6 +4262,7 @@ handle_fontified_prop (struct it *it)
   if (!STRINGP (it->string)
       && it->s == NULL
       && !NILP (Vfontification_functions)
+      && !(input_was_pending && redisplay_skip_fontification_on_input)
       && !NILP (Vrun_hooks)
       && (pos = make_fixnum (IT_CHARPOS (*it)),
 	  prop = Fget_char_property (pos, Qfontified, Qnil),
@@ -25508,7 +25509,7 @@ display_mode_line (struct window *w, enum face_id face_id, Lisp_Object format)
 	  if (start < i)
 	    display_string (NULL,
 			    Fsubstring (mode_string, make_fixnum (start),
-					make_fixnum (i - 1)),
+					make_fixnum (i)),
 			    Qnil, 0, 0, &it, 0, 0, 0,
 			    STRING_MULTIBYTE (mode_string));
 	}
@@ -35613,6 +35614,19 @@ best except in special circumstances such as running redisplay tests
 in batch mode.   */);
   redisplay_skip_initial_frame = true;
 
+  DEFVAR_BOOL ("redisplay-skip-fontification-on-input",
+               redisplay_skip_fontification_on_input,
+    doc: /* Skip `fontification_functions` when there is input pending.
+If non-nil and there was input pending at the beginning of the command,
+the `fontification_functions` hook is not run.  This usually does not
+affect the display because redisplay is completely skipped anyway if input
+was pending, but it can make scrolling smoother by avoiding
+unnecessary fontification.
+It is similar to `fast-but-imprecise-scrolling' with similar tradeoffs,
+but with the advantage that it should only affect the behavior when Emacs
+has trouble keeping up with the incoming input rate.  */);
+  redisplay_skip_fontification_on_input = false;
+
   DEFVAR_BOOL ("redisplay-adhoc-scroll-in-resize-mini-windows",
                redisplay_adhoc_scroll_in_resize_mini_windows,
     doc: /* If nil always use normal scrolling in minibuffer windows.
diff --git a/src/xterm.c b/src/xterm.c
index 0a86738cc20..b8374fed8b1 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -13035,13 +13035,13 @@ x_term_init (Lisp_Object display_name, char *xrm_option, char *resource_name)
        or larger than other for other applications, even if it is the same
        font name (monospace-10 for example).  */
 
+# ifdef HAVE_XRENDER
     int event_base, error_base;
-    char *v;
-    double d;
-
     XRenderQueryExtension (dpyinfo->display, &event_base, &error_base);
+# endif
 
-    v = XGetDefault (dpyinfo->display, "Xft", "dpi");
+    char *v = XGetDefault (dpyinfo->display, "Xft", "dpi");
+    double d;
     if (v != NULL && sscanf (v, "%lf", &d) == 1)
       dpyinfo->resy = dpyinfo->resx = d;
   }