5 files changed, 52 insertions, 17 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 3aef0c729f6..72e78724bab 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,29 @@
+2014-05-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * minibuf.c (read_minibuf): Avoid C99ism in previous patch (Bug#17430).
+
+2014-05-08  Jarek Czekalski  <jarekczek@poczta.onet.pl>
+
+        Fix initialization of minibuffer history variable (Bug#17430).
+        * minibuf.c (read_minibuf): Initialize histval to Qnil if unbound.
+        Move the initialization up to prevent any "value void" message.
+
+2014-05-08  Samuel Bronson  <naesten@gmail.com>
+
+        * keyboard.c (Frecursive_edit): Ensure inc&dec of command_loop_level
+        are matched (bug#17413).
+
+2014-05-08  Jarek Czekalski  <jarekczek@poczta.onet.pl>
+
+        Stop tooltips pulling Emacs window to front (Bug#17408).
+        * w32fns.c (Fx_show_tip): Add SWP_NOOWNERZORDER flag to
+        SetWindowPos invocations.
+
+2014-05-08  Jan Djärv  <jan.h.d@swipnet.se>
+
+        * nsselect.m (Fx_selection_exists_p): Just return Qnil if window system
+        not initialized (Bug#17398).
+
 2014-05-07  Paul Eggert  <eggert@cs.ucla.edu>
 
         * image.c: Include <png.h> before <setjmp.h> (Bug#17429).
diff --git a/src/keyboard.c b/src/keyboard.c
index d52483e6a18..a5a9ad93047 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -825,22 +825,25 @@ This function is called by the editor initialization to begin editing.  */)
   if (input_blocked_p ())
     return Qnil;
 
-  command_loop_level++;
-  update_mode_lines = 17;
-
-  if (command_loop_level
+  if (command_loop_level >= 0
       && current_buffer != XBUFFER (XWINDOW (selected_window)->contents))
     buffer = Fcurrent_buffer ();
   else
     buffer = Qnil;
 
+  /* Don't do anything interesting between the increment and the
+     record_unwind_protect!  Otherwise, we could get distracted and
+     never decrement the counter again.  */
+  command_loop_level++;
+  update_mode_lines = 17;
+  record_unwind_protect (recursive_edit_unwind, buffer);
+
   /* If we leave recursive_edit_1 below with a `throw' for instance,
      like it is done in the splash screen display, we have to
      make sure that we restore single_kboard as command_loop_1
      would have done if it were left normally.  */
   if (command_loop_level > 0)
     temporarily_switch_to_single_kboard (SELECTED_FRAME ());
-  record_unwind_protect (recursive_edit_unwind, buffer);
 
   recursive_edit_1 ();
   return unbind_to (count, Qnil);
diff --git a/src/minibuf.c b/src/minibuf.c
index 8b742cf88ca..06fe0c07df6 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -384,6 +384,7 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
   EMACS_INT pos = 0;
   /* String to add to the history.  */
   Lisp_Object histstring;
+  Lisp_Object histval;
 
   Lisp_Object empty_minibuf;
   Lisp_Object dummy, frame;
@@ -535,6 +536,14 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
   if (!NILP (Vminibuffer_completing_file_name))
     Vminibuffer_completing_file_name = Qlambda;
 
+  /* If variable is unbound, make it nil.  */
+  histval = find_symbol_value (Vminibuffer_history_variable);
+  if (EQ (histval, Qunbound))
+    {
+      Fset (Vminibuffer_history_variable, Qnil);
+      histval = Qnil;
+    }
+
   if (inherit_input_method)
     {
       /* `current-input-method' is buffer local.  So, remember it in
@@ -703,13 +712,6 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
     {
       /* If the caller wanted to save the value read on a history list,
          then do so if the value is not already the front of the list.  */
-      Lisp_Object histval;
-
-      /* If variable is unbound, make it nil.  */
-
-      histval = find_symbol_value (Vminibuffer_history_variable);
-      if (EQ (histval, Qunbound))
-        Fset (Vminibuffer_history_variable, Qnil);
 
       /* The value of the history variable must be a cons or nil.  Other
          values are unacceptable.  We silently ignore these values.  */
diff --git a/src/nsselect.m b/src/nsselect.m
index f4713cb5e10..038849c0aed 100644
--- a/src/nsselect.m
+++ b/src/nsselect.m
@@ -429,7 +429,9 @@ On Nextstep, TERMINAL is unused.  */)
   id pb;
   NSArray *types;
 
-  check_window_system (NULL);
+  if (!window_system_available (NULL))
+    return Qnil;
+
   CHECK_SYMBOL (selection);
   if (EQ (selection, Qnil)) selection = QPRIMARY;
   if (EQ (selection, Qt)) selection = QSECONDARY;
diff --git a/src/w32fns.c b/src/w32fns.c
index 77476757c2f..fa988583f33 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -6035,12 +6035,13 @@ Text larger than the specified size is clipped.  */)
           /* Put tooltip in topmost group and in position.  */
           SetWindowPos (FRAME_W32_WINDOW (f), HWND_TOPMOST,
                         root_x, root_y, 0, 0,
-                        SWP_NOSIZE | SWP_NOACTIVATE);
+                        SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOOWNERZORDER);
 
           /* Ensure tooltip is on top of other topmost windows (eg menus).  */
           SetWindowPos (FRAME_W32_WINDOW (f), HWND_TOP,
                         0, 0, 0, 0,
-                        SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
+                        SWP_NOMOVE | SWP_NOSIZE
+                        | SWP_NOACTIVATE | SWP_NOOWNERZORDER);
 
           unblock_input ();
           goto start_timer;
@@ -6238,12 +6239,13 @@ Text larger than the specified size is clipped.  */)
     SetWindowPos (FRAME_W32_WINDOW (f), HWND_TOPMOST,
                   root_x, root_y,
                   rect.right - rect.left + FRAME_COLUMN_WIDTH (f),
-                  rect.bottom - rect.top, SWP_NOACTIVATE);
+                  rect.bottom - rect.top, SWP_NOACTIVATE | SWP_NOOWNERZORDER);
 
     /* Ensure tooltip is on top of other topmost windows (eg menus).  */
     SetWindowPos (FRAME_W32_WINDOW (f), HWND_TOP,
                   0, 0, 0, 0,
-                  SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
+                  SWP_NOMOVE | SWP_NOSIZE
+                  | SWP_NOACTIVATE | SWP_NOOWNERZORDER);
 
     /* Let redisplay know that we have made the frame visible already.  */
     SET_FRAME_VISIBLE (f, 1);