Make selection in omnibox break at periods.

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h"
 
 #include <Carbon/Carbon.h>  // kVK_Return
 
 #include "app/mac/nsimage_cache.h"
 #include "base/string_util.h"
@@ skipping 514 matching lines @@
     ApplyTextAttributes(GetText(), storage);
 
     [storage endEditing];
   } else {
     SetText(GetText());
   }
 }
 
 void OmniboxViewMac::ApplyTextAttributes(const string16& display_text,
                                          NSMutableAttributedString* as) {
+  NSUInteger as_length = [as length];
+  NSRange as_entire_string = NSMakeRange(0, as_length);
+
   [as addAttribute:NSFontAttributeName value:GetFieldFont()
-             range:NSMakeRange(0, [as length])];
+             range:as_entire_string];
+
+  // A kinda hacky way to add breaking at periods. This is what Safari does.
+  // This works for IDNs too, despite the "en_US".
+  [as addAttribute:@"NSLanguage" value:@"en_US_POSIX"
+             range:as_entire_string];
 
   // Make a paragraph style locking in the standard line height as the maximum,
   // otherwise the baseline may shift "downwards".
   scoped_nsobject<NSMutableParagraphStyle>
       paragraph_style([[NSMutableParagraphStyle alloc] init]);
   [paragraph_style setMaximumLineHeight:line_height_];
   [as addAttribute:NSParagraphStyleAttributeName value:paragraph_style
-             range:NSMakeRange(0, [as length])];
+             range:as_entire_string];
 
   // Grey out the suggest text.
   [as addAttribute:NSForegroundColorAttributeName value:SuggestTextColor()
-             range:NSMakeRange([as length] - suggest_text_length_,
+             range:NSMakeRange(as_length - suggest_text_length_,
                                suggest_text_length_)];
 
   url_parse::Component scheme, host;
   AutocompleteInput::ParseForEmphasizeComponents(
       display_text, model_->GetDesiredTLD(), &scheme, &host);
   const bool emphasize = model_->CurrentTextIsURL() && (host.len > 0);
   if (emphasize) {
     [as addAttribute:NSForegroundColorAttributeName value:BaseTextColor()
-               range:NSMakeRange(0, [as length])];
+               range:as_entire_string];
 
     [as addAttribute:NSForegroundColorAttributeName value:HostTextColor()
                range:ComponentToNSRange(host)];
   }
 
   // TODO(shess): GTK has this as a member var, figure out why.
   // [Could it be to not change if no change?  If so, I'm guessing
   // AppKit may already handle that.]
   const ToolbarModel::SecurityLevel security_level =
       toolbar_model_->GetSecurityLevel();
@@ skipping 539 matching lines @@
 
 void OmniboxViewMac::PlaceCaretAt(NSUInteger pos) {
   DCHECK(pos <= GetTextLength());
   SetSelectedRange(NSMakeRange(pos, pos));
 }
 
 bool OmniboxViewMac::IsCaretAtEnd() const {
   const NSRange selection = GetSelectedRange();
   return selection.length == 0 && selection.location == GetTextLength();
 }