From 17acbdcb56d0d2f39507a3f67ef329c14a213ef6 Mon Sep 17 00:00:00 2001
From: MLquest8 <miskuzius@gmail.com>
Date: Thu, 18 Jun 2020 15:34:18 +0400
Subject: [PATCH] attachtop. Attaches new client below the last master/on top
 of the stack. In case of nmaster = 1 behaves like attachaside.

---
 dwm.c | 29 +++++++++++++++++++++++++----
 1 file changed, 25 insertions(+), 4 deletions(-)

diff --git a/dwm.c b/dwm.c
index 9fd0286..7ced982 100644
--- a/dwm.c
+++ b/dwm.c
@@ -49,7 +49,8 @@
 #define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
 #define INTERSECT(x,y,w,h,m)    (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
                                * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
-#define ISVISIBLE(C)            ((C->tags & C->mon->tagset[C->mon->seltags]))
+#define ISVISIBLEONTAG(C, T)    ((C->tags & T))
+#define ISVISIBLE(C)            ISVISIBLEONTAG(C, C->mon->tagset[C->mon->seltags])
 #define LENGTH(X)               (sizeof X / sizeof X[0])
 #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
 #define WIDTH(X)                ((X)->w + 2 * (X)->bw)
@@ -147,6 +148,7 @@ static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interac
 static void arrange(Monitor *m);
 static void arrangemon(Monitor *m);
 static void attach(Client *c);
+static void attachtop(Client *c);
 static void attachstack(Client *c);
 static void buttonpress(XEvent *e);
 static void checkotherwm(void);
@@ -407,6 +409,25 @@ attach(Client *c)
 	c->mon->clients = c;
 }
 
+void
+attachtop(Client *c)
+{
+	int n;
+	Monitor *m = selmon;
+	Client *below;
+
+	for (n = 1, below = c->mon->clients;
+		below && below->next && (below->isfloating || !ISVISIBLEONTAG(below, c->tags) || n != m->nmaster);
+		n = below->isfloating || !ISVISIBLEONTAG(below, c->tags) ? n + 0 : n + 1, below = below->next);
+	c->next = NULL;
+	if (below) {
+		c->next = below->next;
+		below->next = c;
+	}
+	else
+		c->mon->clients = c;
+}
+
 void
 attachstack(Client *c)
 {
@@ -1063,7 +1084,7 @@ manage(Window w, XWindowAttributes *wa)
 		c->isfloating = c->oldstate = trans != None || c->isfixed;
 	if (c->isfloating)
 		XRaiseWindow(dpy, c->win);
-	attach(c);
+	attachtop(c);
 	attachstack(c);
 	XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
 		(unsigned char *) &(c->win), 1);
@@ -1418,7 +1439,7 @@ sendmon(Client *c, Monitor *m)
 	detachstack(c);
 	c->mon = m;
 	c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
-	attach(c);
+	attachtop(c);
 	attachstack(c);
 	focus(NULL);
 	arrange(NULL);
@@ -1900,7 +1921,7 @@ updategeom(void)
 					m->clients = c->next;
 					detachstack(c);
 					c->mon = mons;
-					attach(c);
+					attachtop(c);
 					attachstack(c);
 				}
 				if (m == selmon)
-- 
2.26.2