Adding reorganizetags patch

patch/include.c

@@ -137,6 +137,9 @@
 #elif PUSH_PATCH
 #include "push.c"
 #endif
+#if REORGANIZETAGS_PATCH
+#include "reorganizetags.c"
+#endif
 #if RESTARTSIG_PATCH
 #include "restartsig.c"
 #endif

patch/include.h

@@ -137,6 +137,9 @@
 #elif PUSH_PATCH
 #include "push.h"
 #endif
+#if REORGANIZETAGS_PATCH
+#include "reorganizetags.h"
+#endif
 #if RESTARTSIG_PATCH
 #include "restartsig.h"
 #endif

patch/reorganizetags.c

@@ -0,0 +1,27 @@
+void
+reorganizetags(const Arg *arg)
+{
+   Client *c;
+   unsigned int occ, unocc, i;
+   unsigned int tagdest[LENGTH(tags)];
+
+   occ = 0;
+   for (c = selmon->clients; c; c = c->next)
+       occ |= (1 << (ffs(c->tags)-1));
+   unocc = 0;
+   for (i = 0; i < LENGTH(tags); ++i) {
+       while (unocc < i && (occ & (1 << unocc)))
+           unocc++;
+       if (occ & (1 << i)) {
+           tagdest[i] = unocc;
+           occ &= ~(1 << i);
+           occ |= 1 << unocc;
+       }
+   }
+
+   for (c = selmon->clients; c; c = c->next)
+       c->tags = 1 << tagdest[ffs(c->tags)-1];
+   if (selmon->sel)
+       selmon->tagset[selmon->seltags] = selmon->sel->tags;
+   arrange(selmon);
+}

patch/reorganizetags.h

@@ -0,0 +1 @@
+static void reorganizetags(const Arg *arg);