added and fixed tilegap patch

config.h

@@ -2,6 +2,7 @@
 
 /* appearance */
 static const unsigned int borderpx  = 2;        /* border pixel of windows */
+static const unsigned int gappx     = 18;       /* gaps between windows */
 static const unsigned int snap      = 16;       /* snap pixel */
 static const int showbar            = 1;        /* 0 means no bar */
 static const int topbar             = 1;        /* 0 means bottom bar */

dwm.c

@@ -809,17 +809,6 @@ drawbar(Monitor *m)
  		}
 		drw_setscheme(drw, scheme[SchemeInfoNorm]);
 		drw_rect(drw, x, 0, w, bh, 1, 1);
-	/*
-		if (m->sel) {
-			drw_setscheme(drw, scheme[m == selmon ? SchemeInfoSel : SchemeInfoNorm]);
-			drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
-			if (m->sel->isfloating)
-				drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
-		} else {
-			drw_setscheme(drw, scheme[SchemeInfoNorm]);
-			drw_rect(drw, x, 0, w, bh, 1, 1);
-		}
-		*/
 	}
 	drw_map(drw, m->barwin, 0, 0, m->ww, bh);
 }
@@ -1754,26 +1743,29 @@ tagmon(const Arg *arg)
 void
 tile(Monitor *m)
 {
-	unsigned int i, n, h, mw, my, ty;
+	unsigned int i, n, h, mw, my, ty, ns;
 	Client *c;
 
 	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
 	if (n == 0)
 		return;
 
-	if (n > m->nmaster)
+	if (n > m->nmaster) {
 		mw = m->nmaster ? m->ww * m->mfact : 0;
-	else
+		ns = m->nmaster > 0 ? 2 : 1;
+	} else {
 		mw = m->ww;
+		ns = 1;
+	}
 	for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
 		if (i < m->nmaster) {
-			h = (m->wh - my) / (MIN(n, m->nmaster) - i);
-			resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
-			my += HEIGHT(c);
+			h = (m->wh - my) / (MIN(n, m->nmaster) - i) - gappx;
+			resize(c, m->wx + gappx, m->wy + my + gappx, mw - (2*c->bw) - gappx * (5 - ns) / 2, h - (2*c->bw) - gappx, 0);
+			my += HEIGHT(c) + gappx;
 		} else {
 			h = (m->wh - ty) / (n - i);
-			resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
-			ty += HEIGHT(c);
+			resize(c, m->wx + mw + gappx / ns, m->wy + ty + gappx, m->ww - mw - (2*c->bw) - gappx * (5 - ns) / 2, h - (2*c->bw) - gappx * 2, 0);
+			ty += HEIGHT(c) + gappx;
 		}
 }