Adding ewmhtags patch

patch/ewmhtags.c

@@ -0,0 +1,40 @@
+void
+setcurrentdesktop(void)
+{
+	long data[] = { 0 };
+	XChangeProperty(dpy, root, netatom[NetCurrentDesktop], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)data, 1);
+}
+
+void
+setdesktopnames(void)
+{
+	XTextProperty text;
+	Xutf8TextListToTextProperty(dpy, tags, TAGSLENGTH, XUTF8StringStyle, &text);
+	XSetTextProperty(dpy, root, &text, netatom[NetDesktopNames]);
+}
+
+void
+setnumdesktops(void)
+{
+	long data[] = { TAGSLENGTH };
+	XChangeProperty(dpy, root, netatom[NetNumberOfDesktops], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)data, 1);
+}
+
+void
+setviewport(void)
+{
+	long data[] = { 0, 0 };
+	XChangeProperty(dpy, root, netatom[NetDesktopViewport], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)data, 2);
+}
+
+void
+updatecurrentdesktop(void)
+{
+	long rawdata[] = { selmon->tagset[selmon->seltags] };
+	int i = 0;
+	while (*rawdata >> (i + 1)) {
+		i++;
+	}
+	long data[] = { i };
+	XChangeProperty(dpy, root, netatom[NetCurrentDesktop], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)data, 1);
+}

patch/ewmhtags.h

@@ -0,0 +1,7 @@
+#define TAGSLENGTH (LENGTH(tags))
+
+static void setcurrentdesktop(void);
+static void setdesktopnames(void);
+static void setnumdesktops(void);
+static void setviewport(void);
+static void updatecurrentdesktop(void);

patch/include.c

@@ -32,6 +32,10 @@
 #include "cyclelayouts.c"
 #endif
 
+#if EWMHTAGS_PATCH
+#include "ewmhtags.c"
+#endif
+
 #if PERTAG_PATCH
 #include "pertag.c"
 #endif

patch/include.h

@@ -32,6 +32,10 @@
 #include "cyclelayouts.h"
 #endif
 
+#if EWMHTAGS_PATCH
+#include "ewmhtags.h"
+#endif
+
 #if ROTATESTACK_PATCH
 #include "rotatestack.h"
 #endif