Allow almost anything as a key equivalent unless a text field is the first responder.

After testing in Cocoa, even unexpected keys such as tab can be used when a text field isn't selected. Some keys such as the arrow keys and escape act like key equivalents even with a text field active.

AppKit/CPEvent.j

@@ -571,10 +571,12 @@ var _CPEventPeriodicEventPeriod         = 0,
     if (_modifierFlags & (CPCommandKeyMask | CPControlKeyMask))
         return YES;
 
-    // Cocoa does not consider space, backspace, or escape a key equivalent
-    // if the first responder is a text field (presumably a subclass of NSText).
+    // Cocoa allows almost any key as a key equivalent unless the first responder is a
+    // text field (presumably a subclass of NSText.)
     var firstResponderIsText = [[_window firstResponder] isKindOfClass:[CPTextField class]];
 
+    // Some keys are accepted as key equivalents even if the first responder is a text
+    // field.
     for (var i = 0; i < characterCount; i++)
     {
         var c = _characters.charAt(i);
@@ -583,18 +585,13 @@ var _CPEventPeriodicEventPeriod         = 0,
             c === CPEnterCharacter ||
             c === CPNewlineCharacter ||
             c === CPCarriageReturnCharacter ||
-            c === CPEscapeFunctionKey ||
-            (!firstResponderIsText &&
-                (c === CPSpaceFunctionKey ||
-                 c === CPDeleteCharacter ||
-                 c === CPBackspaceCharacter)))
+            c === CPEscapeFunctionKey)
         {
             return YES;
         }
     }
 
-    // FIXME: More cases?
-    return NO;
+    return !firstResponderIsText;
 }
 
 /*!

Tests/Manual/KeyEquivalents/AppController.j

@@ -60,7 +60,6 @@
         [contentView addSubview:button];
     }
 
-
     var label = [[CPTextField alloc] initWithFrame:CGRectMakeZero()];
     [label setStringValue:@"Press the appropriate key on the keyboard for each button and verify that it reacts."];
     [label setFont:[CPFont boldSystemFontOfSize:14.0]];
@@ -86,7 +85,7 @@
         ["down arrow", CPDownArrowFunctionKey],
         ["home", CPHomeFunctionKey],
         ["end", CPEndFunctionKey]
-        ];
+    ];
 
     for (var i = 0, buttonsWide = 6, yOffset = 0; i < functionKeysToTest.length; i++)
     {
@@ -102,6 +101,15 @@
         [contentView addSubview:button];
     }
 
+    var label2 = [[CPTextField alloc] initWithFrame:CGRectMake(10, 140 + yOffset + 24, 100, 24)];
+    [label2 setStringValue:@"If a text field is the first responder, some key equivalents are ignored."];
+    [label2 sizeToFit];
+    [contentView addSubview:label2];
+
+    var textField = [CPTextField textFieldWithStringValue:"" placeholder:"" width:100];
+    [textField setFrameOrigin:CGPointMake(10, CGRectGetMaxY([label2 frame]) + 10)];
+    [contentView addSubview:textField];
+
     [theWindow orderFront:self];
 }