Merge from origin/emacs-25

16e5e8e Fix last change to isearch-update (bug#23406)
b755d98 Autoload cursor-sensor-inhibit (bug#23406)
b52ebd4 org-map-entries: Fix org-agenda-prepare-buffers call
86aa409 Followup for last commit in the user manual
7004459 Improve doc string of 'set-goal-column'
ccdaf04 Fix the MSDOS build
ffe701c Remove \= from format string (bug#18190)
1c58fa1 Fix variable-pitch font on MS-Windows
c6077bf Restore follow-scroll-up/down to scrolling by the combined si...
b671e21 Revert unneeded change which harms syntactic parsing.  This f...
48b24c9 Correct indentation of ids in a C++ enum after a protection k...
5c3534f * lisp/window.el (window--process-window-list): No-op if no p...
734fb3a Port dumping to NetBSD with PaX
0255a70 Don't mistake `for' inside a function for a part of array com...

# Conflicts:
#	src/Makefile.in

14 files changed, 114 insertions, 53 deletions

diff --git a/src/Makefile.in b/src/Makefile.in
index fc9360a5bde..8639effde86 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -114,8 +114,9 @@ TEMACS_LDFLAGS = $(LD_SWITCH_SYSTEM) $(LD_SWITCH_SYSTEM_TEMACS)
 ## around this, newer ones setfattr.  See Bug#11398 and Bug#16343.
 PAXCTL = @PAXCTL@
 SETFATTR = @SETFATTR@
-PAXCTL_if_present = $(or $(PAXCTL),: paxctl)
-SETFATTR_if_present = $(or $(SETFATTR),: setfattr)
+## Commands to set PaX flags on dumped and not-dumped instances of Emacs.
+PAXCTL_dumped = @PAXCTL_dumped@
+PAXCTL_notdumped = @PAXCTL_notdumped@
 
 ## Some systems define this to request special libraries.
 LIBS_SYSTEM=@LIBS_SYSTEM@
@@ -542,7 +543,9 @@ ifeq ($(CANNOT_DUMP),yes)
 	ln -f temacs$(EXEEXT) $@
 else
 	LC_ALL=C $(RUN_TEMACS) -batch $(BUILD_DETAILS) -l loadup dump
-	$(PAXCTL_if_present) -zex $@
+  ifneq ($(PAXCTL_dumped),)
+	$(PAXCTL_dumped) $@
+  endif
 	ln -f $@ bootstrap-emacs$(EXEEXT)
 endif
 
@@ -606,8 +609,9 @@ temacs$(EXEEXT): $(LIBXMENU) $(ALLOBJS) \
 	  -o temacs $(ALLOBJS) $(LIBEGNU_ARCHIVE) $(W32_RES_LINK) $(LIBES)
 	$(MKDIR_P) $(etc)
 ifneq ($(CANNOT_DUMP),yes)
-	$(PAXCTL_if_present) -r $@
-	$(SETFATTR_if_present) -n user.pax.flags -v er $@
+  ifneq ($(PAXCTL_notdumped),)
+	$(PAXCTL_notdumped) $@
+  endif
 endif
 
 ## The following oldxmenu-related rules are only (possibly) used if
@@ -748,7 +752,9 @@ ifeq ($(CANNOT_DUMP),yes)
 	ln -f temacs$(EXEEXT) $@
 else
 	$(RUN_TEMACS) --batch $(BUILD_DETAILS) --load loadup bootstrap
-	$(PAXCTL_if_present) -zex emacs$(EXEEXT)
+  ifneq ($(PAXCTL_dumped),)
+	$(PAXCTL_dumped) emacs$(EXEEXT)
+  endif
 	mv -f emacs$(EXEEXT) $@
 endif
 	@: Compile some files earlier to speed up further compilation.
diff --git a/src/atimer.c b/src/atimer.c
index 70d9bf52bc2..64c9e8ab6cb 100644
--- a/src/atimer.c
+++ b/src/atimer.c
@@ -30,6 +30,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 # include <sys/timerfd.h>
 #endif
 
+#ifdef MSDOS
+#include "msdos.h"
+#endif
+
 /* Free-list of atimer structures.  */
 
 static struct atimer *free_atimers;
diff --git a/src/conf_post.h b/src/conf_post.h
index 047e3575e19..5d3394fafce 100644
--- a/src/conf_post.h
+++ b/src/conf_post.h
@@ -134,6 +134,9 @@ You lose; /* Emacs for DOS must be compiled with DJGPP */
 # define HAVE_LSTAT 1
 #else
 # define lstat stat
+/* DJGPP 2.03 and older don't have the next two.  */
+# define EOVERFLOW ERANGE
+# define SIZE_MAX  4294967295U
 #endif
 
 /* We must intercept 'opendir' calls to stash away the directory name,
diff --git a/src/deps.mk b/src/deps.mk
index 0295e705a9c..72f68cabfc3 100644
--- a/src/deps.mk
+++ b/src/deps.mk
@@ -35,7 +35,7 @@
 ### Code:
 
 atimer.o: atimer.c atimer.h syssignal.h systime.h lisp.h blockinput.h \
- globals.h ../lib/unistd.h $(config_h)
+ globals.h ../lib/unistd.h msdos.h $(config_h)
 bidi.o: bidi.c buffer.h character.h dispextern.h msdos.h lisp.h \
    globals.h $(config_h)
 buffer.o: buffer.c buffer.h region-cache.h commands.h window.h \
@@ -92,7 +92,7 @@ editfns.o: editfns.c window.h buffer.h systime.h $(INTERVALS_H) character.h \
 emacs.o: emacs.c commands.h systty.h syssignal.h blockinput.h process.h \
    termhooks.h buffer.h atimer.h systime.h $(INTERVALS_H) lisp.h $(config_h) \
    globals.h ../lib/unistd.h window.h dispextern.h keyboard.h keymap.h \
-   frame.h coding.h gnutls.h msdos.h unexec.h
+   frame.h coding.h gnutls.h msdos.h dosfns.h unexec.h
 fileio.o: fileio.c window.h buffer.h systime.h $(INTERVALS_H) character.h \
    coding.h msdos.h blockinput.h atimer.h lisp.h $(config_h) frame.h \
    commands.h globals.h ../lib/unistd.h
diff --git a/src/dosfns.h b/src/dosfns.h
index 9fbf7eda192..849fb91a7af 100644
--- a/src/dosfns.h
+++ b/src/dosfns.h
@@ -24,6 +24,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 extern unsigned char dos_country_info[DOS_COUNTRY_INFO];
 extern int dos_memory_info (unsigned long *, unsigned long *,
 			    unsigned long *, unsigned long *);
+void dos_cleanup (void);
+void syms_of_dosfns (void);
+void init_dosfns (void);
+
 #ifndef HAVE_X_WINDOWS
 extern int         msdos_stdcolor_idx  (const char *);
 extern Lisp_Object msdos_stdcolor_name (int);
diff --git a/src/emacs.c b/src/emacs.c
index a7cbb32e141..3e0cf596402 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -54,6 +54,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifdef MSDOS
 #include <binary-io.h>
+#include "dosfns.h"
 #endif
 
 #ifdef HAVE_LIBSYSTEMD
diff --git a/src/filelock.c b/src/filelock.c
index 6db6daa3bba..62017188b33 100644
--- a/src/filelock.c
+++ b/src/filelock.c
@@ -53,6 +53,8 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "w32.h"	/* for dostounix_filename */
 #endif
 
+#ifndef MSDOS
+
 #ifdef HAVE_UTMP_H
 #include <utmp.h>
 #endif
@@ -732,6 +734,19 @@ unlock_file (Lisp_Object fn)
   SAFE_FREE ();
 }
 
+#else  /* MSDOS */
+void
+lock_file (Lisp_Object fn)
+{
+}
+
+void
+unlock_file (Lisp_Object fn)
+{
+}
+
+#endif	/* MSDOS */
+
 void
 unlock_all_files (void)
 {
@@ -795,6 +810,9 @@ The value is nil if the FILENAME is not locked,
 t if it is locked by you, else a string saying which user has locked it.  */)
   (Lisp_Object filename)
 {
+#ifdef MSDOS
+  return Qnil;
+#else
   Lisp_Object ret;
   char *lfname;
   int owner;
@@ -815,6 +833,7 @@ t if it is locked by you, else a string saying which user has locked it.  */)
 
   SAFE_FREE ();
   return ret;
+#endif
 }
 
 void
diff --git a/src/fns.c b/src/fns.c
index b21e93d109a..5217b068882 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -34,8 +34,13 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "intervals.h"
 #include "window.h"
 
+#if __GNUC__ >= 4
 static void sort_vector_copy (Lisp_Object, ptrdiff_t,
 			      Lisp_Object [restrict], Lisp_Object [restrict]);
+#else
+static void sort_vector_copy (Lisp_Object, ptrdiff_t,
+			      Lisp_Object [], Lisp_Object []);
+#endif
 static bool internal_equal (Lisp_Object, Lisp_Object, int, bool, Lisp_Object);
 
 DEFUN ("identity", Fidentity, Sidentity, 1, 1, 0,
diff --git a/src/frame.c b/src/frame.c
index 9c8926c42c7..1c5c12c7e29 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -509,10 +509,13 @@ adjust_frame_size (struct frame *f, int new_width, int new_height, int inhibit,
   block_input ();
 
 #ifdef MSDOS
-  /* We only can set screen dimensions to certain values supported
-     by our video hardware.  Try to find the smallest size greater
-     or equal to the requested dimensions.  */
-  dos_set_window_size (&new_lines, &new_cols);
+  /* We only can set screen dimensions to certain values supported by
+     our video hardware.  Try to find the smallest size greater or
+     equal to the requested dimensions, while accounting for the fact
+     that the menu-bar lines are not counted in the frame height.  */
+  int dos_new_lines = new_lines + FRAME_TOP_MARGIN (f);
+  dos_set_window_size (&dos_new_lines, &new_cols);
+  new_lines = dos_new_lines - FRAME_TOP_MARGIN (f);
 #endif
 
   if (new_windows_width != old_windows_width)
diff --git a/src/lread.c b/src/lread.c
index 44507281f2f..98a4d69894b 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -47,6 +47,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifdef MSDOS
 #include "msdos.h"
+#if __DJGPP__ == 2 && __DJGPP_MINOR__ < 5
+# define INFINITY  __builtin_inf()
+# define NAN       __builtin_nan("")
+#endif
 #endif
 
 #ifdef HAVE_NS
diff --git a/src/msdos.c b/src/msdos.c
index 84e8c39ec0c..62411ea2f6d 100644
--- a/src/msdos.c
+++ b/src/msdos.c
@@ -59,6 +59,12 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <libc/dosio.h>  /* for _USE_LFN */
 #include <conio.h>	 /* for cputs */
 
+#if (__DJGPP__ + (__DJGPP_MINOR__ > 3)) >= 3
+#define SYS_ENVIRON _environ
+#else
+#define SYS_ENVIRON environ
+#endif
+
 #include "msdos.h"
 #include "systime.h"
 #include "frame.h"
@@ -422,8 +428,6 @@ static unsigned long screen_old_address = 0;
 /* Segment and offset of the virtual screen.  If 0, DOS/V is NOT loaded.  */
 static unsigned short screen_virtual_segment = 0;
 static unsigned short screen_virtual_offset = 0;
-extern Lisp_Object Qcursor_type;
-extern Lisp_Object Qbar, Qhbar;
 
 /* The screen colors of the current frame, which serve as the default
    colors for newly-created frames.  */
@@ -1384,11 +1388,6 @@ IT_delete_glyphs (struct frame *f, int n)
 
 /* This was copied from xfaces.c  */
 
-extern Lisp_Object Qbackground_color;
-extern Lisp_Object Qforeground_color;
-Lisp_Object Qreverse;
-extern Lisp_Object Qtitle;
-
 /* IT_set_terminal_modes is called when emacs is started,
    resumed, and whenever the screen is redrawn!  */
 
@@ -3710,7 +3709,7 @@ dos_ttcooked (void)
    file TEMPOUT and stderr to TEMPERR.  */
 
 int
-run_msdos_command (unsigned char **argv, const char *working_dir,
+run_msdos_command (char **argv, const char *working_dir,
 		   int tempin, int tempout, int temperr, char **envv)
 {
   char *saveargv1, *saveargv2, *lowcase_argv0, *pa, *pl;
@@ -3796,8 +3795,8 @@ run_msdos_command (unsigned char **argv, const char *working_dir,
 	;
       if (*cmnd)
 	{
-	  extern char **environ;
-	  char **save_env = environ;
+	  extern char **SYS_ENVIRON;
+	  char **save_env = SYS_ENVIRON;
 	  int save_system_flags = __system_flags;
 
 	  /* Request the most powerful version of `system'.  We need
@@ -3809,16 +3808,16 @@ run_msdos_command (unsigned char **argv, const char *working_dir,
 			     | __system_handle_null_commands
 			     | __system_emulate_chdir);
 
-	  environ = envv;
+	  SYS_ENVIRON = envv;
 	  result = system (cmnd);
 	  __system_flags = save_system_flags;
-	  environ = save_env;
+	  SYS_ENVIRON = save_env;
 	}
       else
 	result = 0;	/* emulate Unixy shell behavior with empty cmd line */
     }
   else
-    result = spawnve (P_WAIT, argv[0], (char **)argv, envv);
+    result = spawnve (P_WAIT, argv[0], argv, envv);
 
   dup2 (inbak, 0);
   dup2 (outbak, 1);
@@ -4085,11 +4084,14 @@ sys_select (int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds,
 	  gettime (&t);
 	  clnow = make_timespec (t.tv_sec, t.tv_nsec);
 	  cldiff = timespec_sub (clnow, cllast);
+	  /* Stop when timeout value is about to cross zero.  */
+	  if (timespec_cmp (*timeout, cldiff) <= 0)
+	    {
+	      timeout->tv_sec = 0;
+	      timeout->tv_nsec = 0;
+	      return 0;
+	    }
 	  *timeout = timespec_sub (*timeout, cldiff);
-
-	  /* Stop when timeout value crosses zero.  */
-	  if (timespec_sign (*timeout) <= 0)
-	    return 0;
 	  cllast = clnow;
 	  dos_yield_time_slice ();
 	}
diff --git a/src/msdos.h b/src/msdos.h
index 863ca486e8d..0c3ba2bfa16 100644
--- a/src/msdos.h
+++ b/src/msdos.h
@@ -41,8 +41,12 @@ void mouse_on (void);
 void mouse_off (void);
 void mouse_moveto (int, int);
 
+void IT_set_frame_parameters (struct frame *, Lisp_Object);
+
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <pc.h>
+#include <signal.h>
 
 #if __DJGPP__ == 2 && __DJGPP_MINOR__ < 4
 int readlink (const char *, char *, size_t);
@@ -50,6 +54,16 @@ int readlink (const char *, char *, size_t);
 ssize_t readlinkat (int, const char *, char *, size_t);
 int fstatat (int, char const *, struct stat *, int);
 int unsetenv (const char *);
+int faccessat (int, const char *, int, int);
+void msdos_fatal_signal (int);
+void syms_of_msdos (void);
+int pthread_sigmask (int, const sigset_t *, sigset_t *);
+int dos_keysns (void);
+int dos_keyread (void);
+int run_msdos_command (char **, const char *, int, int, int, char **);
+
+void syms_of_win16select (void);
+
 
 /* Constants.  */
 #define EINPROGRESS 112
diff --git a/src/process.c b/src/process.c
index 0dfe1622971..9f2d379c330 100644
--- a/src/process.c
+++ b/src/process.c
@@ -4278,19 +4278,6 @@ Data that is unavailable is returned as nil.  */)
 #endif
 }
 
-/* If program file NAME starts with /: for quoting a magic
-   name, remove that, preserving the multibyteness of NAME.  */
-
-Lisp_Object
-remove_slash_colon (Lisp_Object name)
-{
-  return
-    ((SBYTES (name) > 2 && SREF (name, 0) == '/' && SREF (name, 1) == ':')
-     ? make_specified_string (SSDATA (name) + 2, SCHARS (name) - 2,
-			      SBYTES (name) - 2, STRING_MULTIBYTE (name))
-     : name);
-}
-
 /* Turn off input and output for process PROC.  */
 
 static void
@@ -7483,6 +7470,19 @@ add_timer_wait_descriptor (int fd)
 
 #endif /* HAVE_TIMERFD */
 
+/* If program file NAME starts with /: for quoting a magic
+   name, remove that, preserving the multibyteness of NAME.  */
+
+Lisp_Object
+remove_slash_colon (Lisp_Object name)
+{
+  return
+    ((SBYTES (name) > 2 && SREF (name, 0) == '/' && SREF (name, 1) == ':')
+     ? make_specified_string (SSDATA (name) + 2, SCHARS (name) - 2,
+			      SBYTES (name) - 2, STRING_MULTIBYTE (name))
+     : name);
+}
+
 /* Add DESC to the set of keyboard input descriptors.  */
 
 void
@@ -8010,13 +8010,6 @@ The variable takes effect when `start-process' is called.  */);
   defsubr (&Sset_process_filter_multibyte);
   defsubr (&Sprocess_filter_multibyte_p);
 
-#endif	/* subprocesses */
-
-  defsubr (&Sget_buffer_process);
-  defsubr (&Sprocess_inherit_coding_system_flag);
-  defsubr (&Slist_system_processes);
-  defsubr (&Sprocess_attributes);
-
  {
    Lisp_Object subfeatures = Qnil;
    const struct socket_options *sopt;
@@ -8049,4 +8042,10 @@ The variable takes effect when `start-process' is called.  */);
    Fprovide (intern_c_string ("make-network-process"), subfeatures);
  }
 
+#endif	/* subprocesses */
+
+  defsubr (&Sget_buffer_process);
+  defsubr (&Sprocess_inherit_coding_system_flag);
+  defsubr (&Slist_system_processes);
+  defsubr (&Sprocess_attributes);
 }
diff --git a/src/w16select.c b/src/w16select.c
index 434a5987893..208cfccf11a 100644
--- a/src/w16select.c
+++ b/src/w16select.c
@@ -65,8 +65,6 @@ unsigned get_clipboard_data (unsigned, void *, unsigned, int);
 unsigned close_clipboard (void);
 unsigned clipboard_compact (unsigned);
 
-Lisp_Object QCLIPBOARD, QPRIMARY;
-
 /* The segment address and the size of the buffer in low
    memory used to move data between us and WinOldAp module.  */
 static struct {
@@ -719,8 +717,7 @@ variable is set, it is used for the next communication only.
 After the communication, this variable is set to nil.  */);
   Vnext_selection_coding_system = Qnil;
 
-  QPRIMARY   = intern ("PRIMARY");	staticpro (&QPRIMARY);
-  QCLIPBOARD = intern ("CLIPBOARD");	staticpro (&QCLIPBOARD);
+  DEFSYM (QCLIPBOARD, "CLIPBOARD");
 }
 
 #endif /* MSDOS */