lululau

--- mituharu-emacs-mac-b5e5c4a6234d/src/macappkit.m	2017-02-04 13:21:43.000000000 +0800
+++ mituharu-emacs-mac/src/macappkit.m	2017-04-03 14:10:01.000000000 +0800
@@ -1824,6 +1824,18 @@
 
 @implementation EmacsWindow
 
++ (NSButton *)standardWindowButton:(NSWindowButton)b forStyleMask:(NSWindowStyleMask)styleMask
+{
+
+  NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

lululau

--- mituharu-emacs-mac-b5e5c4a6234d/src/macappkit.m	2017-02-04 13:21:43.000000000 +0800
+++ mituharu-emacs-mac/src/macappkit.m	2017-03-31 22:58:41.000000000 +0800
@@ -1824,6 +1824,14 @@
 
 @implementation EmacsWindow
 
++ (NSButton *)standardWindowButton:(NSWindowButton)b forStyleMask:(NSWindowStyleMask)styleMask
+{
+  if(b == NSWindowDocumentIconButton || b == NSWindowDocumentVersionsButton) {
+    return nil;

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD