2 files changed, 25 insertions, 20 deletions

diff --git a/library/menu.tcl b/library/menu.tcl
index c334fd9..1fb6e78 100644
--- a/library/menu.tcl
+++ b/library/menu.tcl
@@ -488,6 +488,7 @@ proc ::tk::MenuMotion {menu x y state} {
 	set index [$menu index @$x,$y]
 	if {[info exists Priv(menuActivated)] \
 		&& $index ne "none" \
+		&& $index >= 0 \
 		&& $index ne $activeindex} {
 	    set mode [option get $menu clickToFocus ClickToFocus]
 	    if {[string is false $mode]} {
@@ -529,7 +530,8 @@ proc ::tk::MenuButtonDown menu {
     if {![winfo viewable $menu]} {
 	return
     }
-    if {[$menu index active] eq "none"} {
+    set activeindex [$menu index active]
+    if {($activeindex eq "none") || ($activeindex < 0)} {
 	if {[$menu cget -type] ne "menubar" } {
 	    set Priv(window) {}
 	}
@@ -587,7 +589,8 @@ proc ::tk::MenuButtonDown menu {
 proc ::tk::MenuLeave {menu rootx rooty state} {
     variable ::tk::Priv
     set Priv(window) {}
-    if {[$menu index active] eq "none"} {
+    set activeindex [$menu index active]
+    if {($activeindex eq "none") || ($activeindex < 0)} {
 	return
     }
     if {[$menu type active] eq "cascade" \
@@ -632,8 +635,8 @@ proc ::tk::MenuInvoke {w buttonRelease} {
 	MenuUnpost $w
     } elseif {[$w cget -type] eq "menubar"} {
 	$w postcascade none
-	set active [$w index active]
-	set isCascade [string equal [$w type $active] "cascade"]
+	set activeindex [$w index active]
+	set isCascade [string equal [$w type $activeindex] "cascade"]
 
 	# Only de-activate the active item if it's a cascade; this prevents
 	# the annoying "activation flicker" you otherwise get with
@@ -651,11 +654,11 @@ proc ::tk::MenuInvoke {w buttonRelease} {
 	# but not recommended)
 
 	if { !$isCascade } {
-	    uplevel #0 [list $w invoke $active]
+	    uplevel #0 [list $w invoke $activeindex]
 	}
     } else {
-	set active [$w index active]
-	if {$Priv(popup) eq "" || $active ne "none"} {
+	set activeindex [$w index active]
+	if {$Priv(popup) eq "" || (($activeindex ne "none") && ($activeindex >= 0)} {
 	    MenuUnpost $w
 	}
 	uplevel #0 [list $w invoke active]
@@ -799,7 +802,8 @@ proc ::tk::MenuNextMenu {menu direction} {
 	if {[winfo class $mb] eq "Menubutton" \
 		&& [$mb cget -state] ne "disabled" \
 		&& [$mb cget -menu] ne "" \
-		&& [[$mb cget -menu] index last] ne "none"} {
+		&& [[$mb cget -menu] index last] ne "none" \
+		&& [[$mb cget -menu] index last] >= 0} {
 	    break
 	}
 	if {$mb eq $w} {
@@ -822,16 +826,16 @@ proc ::tk::MenuNextMenu {menu direction} {
 
 proc ::tk::MenuNextEntry {menu count} {
     set last [$menu index last]
-    if {$last eq "none"} {
+    if {($last eq "none") || ($last < 0)} {
 	return
     }
     set length [expr {$last+1}]
     set quitAfter $length
-    set active [$menu index active]
-    if {$active eq "none"} {
+    set activeindex [$menu index active]
+    if {($activeindex eq "none") || ($activeindex < 0)} {
 	set i 0
     } else {
-	set i [expr {$active + $count}]
+	set i [expr {$activeindex + $count}]
     }
     while {1} {
 	if {$quitAfter <= 0} {
@@ -853,7 +857,7 @@ proc ::tk::MenuNextEntry {menu count} {
 		break
 	    }
 	}
-	if {$i == $active} {
+	if {$i == $activeindex} {
 	    return
 	}
 	incr i $count
@@ -1070,7 +1074,8 @@ proc ::tk::MenuFirstEntry menu {
 	return
     }
     tk_menuSetFocus $menu
-    if {[$menu index active] ne "none"} {
+    set activeindex [$menu index active]
+    if {($activeindex ne "none") && ($activeindex >= 0)} {
 	return
     }
     set last [$menu index last]
diff --git a/library/tearoff.tcl b/library/tearoff.tcl
index 1dbe858..3a63b17 100644
--- a/library/tearoff.tcl
+++ b/library/tearoff.tcl
@@ -31,10 +31,10 @@ proc ::tk::TearOffMenu {w {x 0} {y 0}} {
     # away when the toplevel goes away.
 
     if {$x == 0} {
-    	set x [winfo rootx $w]
+	set x [winfo rootx $w]
     }
     if {$y == 0} {
-    	set y [winfo rooty $w]
+	set y [winfo rooty $w]
 	if {[tk windowingsystem] eq "aqua"} {
 	    # Shift by height of tearoff entry minus height of window titlebar
 	    catch {incr y [expr {[$w yposition 1] - 16}]}
@@ -66,14 +66,14 @@ proc ::tk::TearOffMenu {w {x 0} {y 0}} {
 
     set parent [winfo parent $w]
     if {[$menu cget -title] ne ""} {
-    	wm title $menu [$menu cget -title]
+	wm title $menu [$menu cget -title]
     } else {
-    	switch -- [winfo class $parent] {
+	switch -- [winfo class $parent] {
 	    Menubutton {
-	    	wm title $menu [$parent cget -text]
+		wm title $menu [$parent cget -text]
 	    }
 	    Menu {
-	    	wm title $menu [$parent entrycget active -label]
+		wm title $menu [$parent entrycget active -label]
 	    }
 	}
     }