Merge changes from emacs-23 branch.

4 files changed, 127 insertions, 67 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index fa0dfc79c5b..29f410cad86 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,7 +1,29 @@
+2010-09-14  Jan Djärv  <jan.h.d@swipnet.se>
+
+	* xterm.c (get_current_vm_state): New function.
+	(do_ewmh_fullscreen): Call get_current_vm_state and compare with
+	want_fullscreen so set_wm_state calls are few (Bug#7013).
+	(x_handle_net_wm_state): Move code to get_current_vm_state and
+	call that function.
+
+2010-09-14  Courtney Bane  <emacs-bugs-7626@cbane.org>  (tiny change)
+
+	* term.c (tty_set_terminal_modes): Don't initialize twice (bug#7002).
+
+2010-09-14  Kenichi Handa  <handa@m17n.org>
+
+	* coding.c (encode_coding_iso_2022): Don't optimize for ASCII if
+	we may use designation or locking-shift.
+
+2010-09-14  Kenichi Handa  <handa@m17n.org>
+
+	* coding.c (detect_coding_emacs_mule): Fix checking of multibyte
+	sequence when the source is multibyte.
+
 2010-09-14  Andreas Schwab  <schwab@linux-m68k.org>
 
-	* xml.c (Fxml_parse_string, Fxml_parse_string): Revert last
-	change.  Don't make first argument optional.  Doc fix.
+	* xml.c (Fxml_parse_string, Fxml_parse_string): Revert last change.
+	Don't make first argument optional.  Doc fix.
 
 2010-09-14  Leo  <sdl.web@gmail.com>  (tiny change)
 
@@ -111,8 +133,8 @@
 	(produce_stretch_glyph): Set it2.char_to_display too before
 	calling x_produce_glyphs.
 	(x_produce_glyphs): Simplify by using the same code for ASCII and
-	non-ASCII characters.  Don't set it->char_to_display here.  Don't
-	handle unibyte-display-via-language-environment here. For a
+	non-ASCII characters.  Don't set it->char_to_display here.
+	Don't handle unibyte-display-via-language-environment here.  For a
 	charater of no glyph, use font->space_width instead of FONT_WIDTH.
 
 2010-08-31  Stefan Monnier  <monnier@iro.umontreal.ca>
diff --git a/src/coding.c b/src/coding.c
index 6012978b60a..d6285ed9245 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -2008,7 +2008,7 @@ detect_coding_emacs_mule (struct coding_system *coding,
 	}
       else
 	{
-	  int more_bytes = emacs_mule_bytes[*src_base] - 1;
+	  int more_bytes = emacs_mule_bytes[c] - 1;
 
 	  while (more_bytes > 0)
 	    {
@@ -4490,7 +4490,10 @@ encode_coding_iso_2022 (struct coding_system *coding)
   charset_list = CODING_ATTR_CHARSET_LIST (attrs);
   coding->safe_charsets = SDATA (CODING_ATTR_SAFE_CHARSETS (attrs));
 
-  ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs));
+  ascii_compatible
+    = (! NILP (CODING_ATTR_ASCII_COMPAT (attrs))
+       && ! (CODING_ISO_FLAGS (coding) & (CODING_ISO_FLAG_DESIGNATION
+					  | CODING_ISO_FLAG_LOCKING_SHIFT)));
 
   while (charbuf < charbuf_end)
     {
diff --git a/src/term.c b/src/term.c
index f090cdd2792..2deca1014e8 100644
--- a/src/term.c
+++ b/src/term.c
@@ -247,7 +247,6 @@ tty_set_terminal_modes (struct terminal *terminal)
             cmputc ('\n');
         }
 
-      OUTPUT_IF (tty, tty->TS_termcap_modes);
       OUTPUT_IF (tty, visible_cursor ? tty->TS_cursor_visible : tty->TS_cursor_normal);
       OUTPUT_IF (tty, tty->TS_keypad_mode);
       losecursor (tty);
diff --git a/src/xterm.c b/src/xterm.c
index 2ebe8a80378..c1d1aada530 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -8285,19 +8285,89 @@ x_set_sticky (struct frame *f, Lisp_Object new_value, Lisp_Object old_value)
                 "_NET_WM_STATE_STICKY", NULL);
 }
 
+/* Return the current _NET_WM_STATE.
+   SIZE_STATE is set to one of the FULLSCREEN_* values.
+   STICKY is set to 1 if the sticky state is set, 0 if not.  */
+
+static void
+get_current_vm_state (struct frame *f,
+                      Window window,
+                      int *size_state,
+                      int *sticky)
+{
+  Atom actual_type;
+  unsigned long actual_size, bytes_remaining;
+  int i, rc, actual_format;
+  struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+  long max_len = 65536;
+  Display *dpy = FRAME_X_DISPLAY (f);
+  unsigned char *tmp_data = NULL;
+  Atom target_type = XA_ATOM;
+
+  *sticky = 0;
+  *size_state = FULLSCREEN_NONE;
+
+  BLOCK_INPUT;
+  x_catch_errors (dpy);
+  rc = XGetWindowProperty (dpy, window, dpyinfo->Xatom_net_wm_state,
+                           0, max_len, False, target_type,
+                           &actual_type, &actual_format, &actual_size,
+                           &bytes_remaining, &tmp_data);
+
+  if (rc != Success || actual_type != target_type || x_had_errors_p (dpy))
+    {
+      if (tmp_data) XFree (tmp_data);
+      x_uncatch_errors ();
+      UNBLOCK_INPUT;
+      return;
+    }
+
+  x_uncatch_errors ();
+
+  for (i = 0; i < actual_size; ++i)
+    {
+      Atom a = ((Atom*)tmp_data)[i];
+      if (a == dpyinfo->Xatom_net_wm_state_maximized_horz) 
+        {
+          if (*size_state == FULLSCREEN_HEIGHT)
+            *size_state = FULLSCREEN_MAXIMIZED;
+          else
+            *size_state = FULLSCREEN_WIDTH;
+        }
+      else if (a == dpyinfo->Xatom_net_wm_state_maximized_vert)
+        {
+          if (*size_state == FULLSCREEN_WIDTH)
+            *size_state = FULLSCREEN_MAXIMIZED;
+          else
+            *size_state = FULLSCREEN_HEIGHT;
+        }
+      else if (a == dpyinfo->Xatom_net_wm_state_fullscreen_atom)
+        *size_state = FULLSCREEN_BOTH;
+      else if (a == dpyinfo->Xatom_net_wm_state_sticky)
+        *sticky = 1;
+    }
+
+  if (tmp_data) XFree (tmp_data);
+  UNBLOCK_INPUT;
+}
+
 /* Do fullscreen as specified in extended window manager hints */
 
 static int
 do_ewmh_fullscreen (struct frame *f)
 {
   int have_net_atom = wm_supports (f, "_NET_WM_STATE");
+  Lisp_Object lval = get_frame_param (f, Qfullscreen);
+  int cur, dummy;
+
+  get_current_vm_state (f, FRAME_OUTER_WINDOW (f), &cur, &dummy);
 
   /* Some window managers don't say they support _NET_WM_STATE, but they do say
      they support _NET_WM_STATE_FULLSCREEN.  Try that also.  */
   if (!have_net_atom)
       have_net_atom = wm_supports (f, "_NET_WM_STATE_FULLSCREEN");
 
-  if (have_net_atom)
+  if (have_net_atom && cur != f->want_fullscreen)
     {
       Lisp_Object frame;
       const char *fs = "_NET_WM_STATE_FULLSCREEN";
@@ -8306,26 +8376,41 @@ do_ewmh_fullscreen (struct frame *f)
 
       XSETFRAME (frame, f);
 
-      set_wm_state (frame, 0, fs, NULL);
-      set_wm_state (frame, 0, fh, NULL);
-      set_wm_state (frame, 0, fw, NULL);
-
-      /* If there are _NET_ atoms we assume we have extended window manager
-         hints.  */
+      /* Keep number of calls to set_wm_state as low as possible.
+         Some window managers, or possible Gtk+, hangs when too many
+         are sent at once.  */
       switch (f->want_fullscreen)
         {
         case FULLSCREEN_BOTH:
+          if (cur == FULLSCREEN_WIDTH || cur == FULLSCREEN_MAXIMIZED
+              || cur == FULLSCREEN_HEIGHT)
+            set_wm_state (frame, 0, fw, fh);
           set_wm_state (frame, 1, fs, NULL);
           break;
         case FULLSCREEN_WIDTH:
-          set_wm_state (frame, 1, fw, NULL);
+          if (cur == FULLSCREEN_BOTH || cur == FULLSCREEN_HEIGHT
+              || cur == FULLSCREEN_MAXIMIZED)
+            set_wm_state (frame, 0, fs, fh);
+          if (cur != FULLSCREEN_MAXIMIZED)
+            set_wm_state (frame, 1, fw, NULL);
           break;
         case FULLSCREEN_HEIGHT:
-          set_wm_state (frame, 1, fh, NULL);
+          if (cur == FULLSCREEN_BOTH || cur == FULLSCREEN_WIDTH
+              || cur == FULLSCREEN_MAXIMIZED)
+            set_wm_state (frame, 0, fs, fw);
+          if (cur != FULLSCREEN_MAXIMIZED)
+            set_wm_state (frame, 1, fh, NULL);
           break;
         case FULLSCREEN_MAXIMIZED:
+          if (cur == FULLSCREEN_BOTH)
+            set_wm_state (frame, 0, fs, NULL);
           set_wm_state (frame, 1, fw, fh);
           break;
+        case FULLSCREEN_NONE:
+          if (cur == FULLSCREEN_BOTH)
+            set_wm_state (frame, 0, fs, NULL);
+          else
+            set_wm_state (frame, 0, fw, fh);
         }
 
       f->want_fullscreen = FULLSCREEN_NONE;
@@ -8351,57 +8436,11 @@ XTfullscreen_hook (FRAME_PTR f)
 static void
 x_handle_net_wm_state (struct frame *f, XPropertyEvent *event)
 {
-  Atom actual_type;
-  unsigned long actual_size, bytes_remaining;
-  int i, rc, actual_format, value = FULLSCREEN_NONE;
-  struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
-  long max_len = 65536;
-  Display *dpy = FRAME_X_DISPLAY (f);
-  unsigned char *tmp_data = NULL;
-  Atom target_type = XA_ATOM;
+  int value = FULLSCREEN_NONE;
   Lisp_Object lval;
   int sticky = 0;
 
-  BLOCK_INPUT;
-  x_catch_errors (dpy);
-  rc = XGetWindowProperty (dpy, event->window,
-                           event->atom, 0, max_len, False, target_type,
-                           &actual_type, &actual_format, &actual_size,
-                           &bytes_remaining, &tmp_data);
-
-  if (rc != Success || actual_type != target_type || x_had_errors_p (dpy))
-    {
-      if (tmp_data) XFree (tmp_data);
-      x_uncatch_errors ();
-      UNBLOCK_INPUT;
-      return;
-    }
-
-  x_uncatch_errors ();
-
-  for (i = 0; i < actual_size; ++i)
-    {
-      Atom a = ((Atom*)tmp_data)[i];
-      if (a == dpyinfo->Xatom_net_wm_state_maximized_horz)
-        {
-          if (value == FULLSCREEN_HEIGHT)
-            value = FULLSCREEN_MAXIMIZED;
-          else
-            value = FULLSCREEN_WIDTH;
-        }
-      else if (a == dpyinfo->Xatom_net_wm_state_maximized_vert)
-        {
-          if (value == FULLSCREEN_WIDTH)
-            value = FULLSCREEN_MAXIMIZED;
-          else
-            value = FULLSCREEN_HEIGHT;
-        }
-      else if (a == dpyinfo->Xatom_net_wm_state_fullscreen_atom)
-        value = FULLSCREEN_BOTH;
-      else if (a == dpyinfo->Xatom_net_wm_state_sticky)
-        sticky = 1;
-    }
-
+  get_current_vm_state (f, event->window, &value, &sticky);
   lval = Qnil;
   switch (value)
     {
@@ -8421,9 +8460,6 @@ x_handle_net_wm_state (struct frame *f, XPropertyEvent *event)
 
   store_frame_param (f, Qfullscreen, lval);
   store_frame_param (f, Qsticky, sticky ? Qt : Qnil);
-
-  if (tmp_data) XFree (tmp_data);
-  UNBLOCK_INPUT;
 }
 
 /* Check if we need to resize the frame due to a fullscreen request.