commit bf32ae30258e4fd2c36344126b629bf89c9de737
Author: Jérôme Carretero <cJ@zougloub.eu>
Date:   Tue Dec 31 20:14:21 2013 -0500

    add AutoReleaseButtons configuration option

diff --git a/include/evdev-properties.h b/include/evdev-properties.h
index 8ae5ba3..ab356e1 100644
--- a/include/evdev-properties.h
+++ b/include/evdev-properties.h
@@ -91,4 +91,8 @@
 /* INT32, 3 values (vertical, horizontal, dial) */
 #define EVDEV_PROP_SCROLL_DISTANCE "Evdev Scrolling Distance"
 
+/* Auto-release */
+/* CARD32, 1 value, bitmap, bit N set = button (N+1) is auto-released */
+#define EVDEV_PROP_AUTORELEASE "Evdev Auto-Release Buttons"
+
 #endif
diff --git a/man/evdev.man b/man/evdev.man
index 06613fc..a2f8128 100644
--- a/man/evdev.man
+++ b/man/evdev.man
@@ -82,6 +82,12 @@ Sets a \*qmaster drag lock button\*q that acts as a \*qMeta Key\*q
 indicating that the next button pressed is to be
 \*qdrag locked\*q. Property: "Evdev Drag Lock Buttons".
 .TP 7
+.BI "Option \*qAutoReleaseButtons\*q \*q" "Bn ..." \*q
+Sets which buttons are to be treated as immediately released.  This is
+useful for mice which have buttons which do not generate events in the
+normal way, generating a release event when the button is next clicked as
+opposed to when it is released.
+Property: "Evdev Auto Release Buttons".
 .TP 7
 .BI "Option \*qEmulate3Buttons\*q \*q" boolean \*q
 Enable/disable the emulation of the third (middle) mouse button for mice
diff --git a/src/Makefile.am b/src/Makefile.am
index 5e0c3b3..df68213 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -38,6 +38,7 @@ AM_CPPFLAGS =-I$(top_srcdir)/include $(LIBEVDEV_CFLAGS)
                                emuMB.c \
                                emuThird.c \
                                emuWheel.c \
+                               autorelease.c \
                                draglock.c \
                                apple.c \
                                axis_labels.h
diff --git a/src/evdev.c b/src/evdev.c
index d1ed9ee..b2f7a79 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -660,6 +660,9 @@ EvdevProcessButtonEvent(InputInfoPtr pInfo, struct input_event *ev)
     if (EvdevDragLockFilterEvent(pInfo, button, value))
         return;
 
+    if (EvdevAutoReleaseFilterEvent(pInfo, button, value))
+        return;
+
     if (EvdevWheelEmuFilterButton(pInfo, button, value))
         return;
 
@@ -1949,6 +1952,7 @@ EvdevInit(DeviceIntPtr device)
     Evdev3BEmuInitProperty(device);
     EvdevWheelEmuInitProperty(device);
     EvdevDragLockInitProperty(device);
+    EvdevAutoReleaseInitProperty(device);
     EvdevAppleInitProperty(device);
 
     return Success;
@@ -2663,6 +2667,7 @@ EvdevPreInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags)
         Evdev3BEmuPreInit(pInfo);
         EvdevWheelEmuPreInit(pInfo);
         EvdevDragLockPreInit(pInfo);
+        EvdevAutoReleasePreInit(pInfo);
     }
 
     return Success;
diff --git a/src/evdev.h b/src/evdev.h
index 520d017..e8478e6 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -233,6 +233,7 @@ typedef struct {
         int                 min_y;
         int                 max_y;
     } calibration;
+    uint32_t                releaseButtons;
 
     unsigned char btnmap[32];           /* config-file specified button mapping */
 
@@ -295,9 +296,14 @@ BOOL EvdevWheelEmuFilterMotion(InputInfoPtr pInfo, struct input_event *pEv);
 void EvdevDragLockPreInit(InputInfoPtr pInfo);
 BOOL EvdevDragLockFilterEvent(InputInfoPtr pInfo, unsigned int button, int value);
 
+/* Auto-release code */
+void EvdevAutoReleasePreInit(InputInfoPtr pInfo);
+BOOL EvdevAutoReleaseFilterEvent(InputInfoPtr pInfo, unsigned int button, int value);
+
 void EvdevMBEmuInitProperty(DeviceIntPtr);
 void Evdev3BEmuInitProperty(DeviceIntPtr);
 void EvdevWheelEmuInitProperty(DeviceIntPtr);
 void EvdevDragLockInitProperty(DeviceIntPtr);
+void EvdevAutoReleaseInitProperty(DeviceIntPtr);
 void EvdevAppleInitProperty(DeviceIntPtr);
 #endif