reset layout patch

config.def.h

@@ -120,6 +120,7 @@ static const Key keys[] = {
 	{ MODKEY,                       XK_d,      incnmaster,     {.i = -1 } },
 	{ MODKEY,                       XK_h,      setmfact,       {.f = -0.05} },
 	{ MODKEY,                       XK_l,      setmfact,       {.f = +0.05} },
+    { MODKEY,                       XK_r,      resetlayout,    {0} },
 	{ MODKEY,                       XK_Return, zoom,           {0} },
 	{ MODKEY,                       XK_Tab,    view,           {0} },
 	{ MODKEY|ShiftMask,             XK_c,      killclient,     {0} },

dwm.c

@@ -223,6 +223,7 @@ static void pop(Client *c);
 static void propertynotify(XEvent *e);
 static void quit(const Arg *arg);
 static Monitor *recttomon(int x, int y, int w, int h);
+static void resetlayout(const Arg *arg);
 static void resize(Client *c, int x, int y, int w, int h, int interact);
 static void resizeclient(Client *c, int x, int y, int w, int h);
 static void resizemouse(const Arg *arg);
@@ -1735,6 +1736,16 @@ recttomon(int x, int y, int w, int h)
 	return r;
 }
 
+void
+resetlayout(const Arg *arg)
+{
+	Arg default_layout = {.v = &layouts[0]};
+	Arg default_mfact = {.f = mfact + 1};
+
+	setlayout(&default_layout);
+	setmfact(&default_mfact);
+}
+
 void
 resize(Client *c, int x, int y, int w, int h, int interact)
 {
@@ -1755,6 +1766,9 @@ resizeclient(Client *c, int x, int y, int w, int h)
 	c->oldh = c->h; c->h = wc.height = h;
 	wc.border_width = c->bw;
 
+	if ((nexttiled(c->mon->clients) == c) && !(nexttiled(c->next)))
+		resetlayout(NULL);
+
 	for (n = 0, nbc = nexttiled(c->mon->clients); nbc; nbc = nexttiled(nbc->next), n++);
 
 	if (c->isfloating || c->mon->lt[c->mon->sellt]->arrange == NULL) {

patches/behavior/dwm-resetlayout-6.2.diff

@@ -0,0 +1,65 @@
+From 4df827a2ec7820f41bdb8576cc39b55fbf35be44 Mon Sep 17 00:00:00 2001
+From: Jack Bird <jack.bird@durham.ac.uk>
+Date: Mon, 16 Aug 2021 23:25:16 +0100
+Subject: [PATCH] Patch applies cleanly
+
+---
+ config.def.h |  1 +
+ dwm.c        | 15 +++++++++++++++
+ 2 files changed, 16 insertions(+)
+
+diff --git a/config.def.h b/config.def.h
+index 1c0b587..5d118cf 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -70,6 +70,7 @@ static Key keys[] = {
+ 	{ MODKEY,                       XK_d,      incnmaster,     {.i = -1 } },
+ 	{ MODKEY,                       XK_h,      setmfact,       {.f = -0.05} },
+ 	{ MODKEY,                       XK_l,      setmfact,       {.f = +0.05} },
++    { MODKEY,                       XK_r,      resetlayout,    {0} },
+ 	{ MODKEY,                       XK_Return, zoom,           {0} },
+ 	{ MODKEY,                       XK_Tab,    view,           {0} },
+ 	{ MODKEY|ShiftMask,             XK_c,      killclient,     {0} },
+diff --git a/dwm.c b/dwm.c
+index 4465af1..77727ea 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -188,6 +188,7 @@ static void pop(Client *);
+ static void propertynotify(XEvent *e);
+ static void quit(const Arg *arg);
+ static Monitor *recttomon(int x, int y, int w, int h);
++static void resetlayout(const Arg *arg);
+ static void resize(Client *c, int x, int y, int w, int h, int interact);
+ static void resizeclient(Client *c, int x, int y, int w, int h);
+ static void resizemouse(const Arg *arg);
+@@ -1265,6 +1266,16 @@ recttomon(int x, int y, int w, int h)
+ 	return r;
+ }
+ 
++void
++resetlayout(const Arg *arg)
++{
++	Arg default_layout = {.v = &layouts[0]};
++	Arg default_mfact = {.f = mfact + 1};
++
++	setlayout(&default_layout);
++	setmfact(&default_mfact);
++}
++
+ void
+ resize(Client *c, int x, int y, int w, int h, int interact)
+ {
+@@ -1282,6 +1293,10 @@ resizeclient(Client *c, int x, int y, int w, int h)
+ 	c->oldw = c->w; c->w = wc.width = w;
+ 	c->oldh = c->h; c->h = wc.height = h;
+ 	wc.border_width = c->bw;
++
++    if ((nexttiled(c->mon->clients) == c) && !(nexttiled(c->next)))
++		resetlayout(NULL);
++
+ 	XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
+ 	configure(c);
+ 	XSync(dpy, False);
+-- 
+2.32.0
+