+void
+growcol(Arg *arg)
+{
+ Client *c = getnext(clients);
+
+ if(!sel || !c || !getnext(c->next) || (arrange != dotile))
+ return;
+ if(sel == getnext(clients)) {
+ if(mw + arg->i > sw - 100)
+ return;
+ mw += arg->i;
+ }
+ else {
+ if(mw - arg->i < 100)
+ return;
+ mw -= arg->i;
+ }
+ arrange(NULL);
+}
+