xinput: enum InputClass: comment value Attach 7

The value Attach=7 is defined in XI.h but not supported anymore by libXi.
And it never was transmitted over the protocol.
(It was used to tag a fake class created by libXi)

Add this comment so that future reviews will not accidentally add this value.

spec:
http://cgit.freedesktop.org/xorg/proto/inputproto/tree/XI.h#n242

drop of support in libXi:
http://cgit.freedesktop.org/xorg/lib/libXi/commit/?id=62858c426e6de1b99df660251737233afd335302

diff --git a/src/xinput.xml b/src/xinput.xml
index 459b388..58551ea 100644 (file)
--- a/src/xinput.xml
+++ b/src/xinput.xml
@@ -89,6 +89,17 @@ authorization from the authors.
         <item name="Proximity"> <value>4</value> </item>
         <item name="Focus">     <value>5</value> </item>
         <item name="Other">     <value>6</value> </item>
+        <!--
+               value Attach=7 is still contained in XI.h as "#define AttachClass"
+               but it was never transmitted over the protocol.
+               (It was used to tag a fake class created by libXi).
+
+               Even the creation of that fake class has been dropped
+               from libXi in 2009 by the following change:
+               http://cgit.freedesktop.org/xorg/lib/libXi/commit/?id=62858c426e6de1b99df660251737233afd335302
+
+               <item name="Attach">    <value>7</value> </item>
+        -->
     </enum>
 
     <enum name="ValuatorMode">