restartsig patch

- Apply restartsig patch
- Add keybinding for restarting dwm
- Update man page with keybinding
- Update README with patch link

README.md

@@ -56,6 +56,7 @@ and (re)compiling the source code.
 * [cyclelayouts](https://dwm.suckless.org/patches/cyclelayouts/)
 * [gridmode](https://dwm.suckless.org/patches/gridmode/)
 * [movestack](https://dwm.suckless.org/patches/movestack/)
+* [restartsig](https://dwm.suckless.org/patches/restartsig/)
 * [ru_gaps](https://dwm.suckless.org/patches/ru_gaps/)
 * [systray](https://dwm.suckless.org/patches/systray/)
 

config.h

@@ -143,6 +143,7 @@ static Key keys[] = {
 	TAGKEYS(            			XK_8,                      					7)
 	TAGKEYS(            			XK_9,                      					8)
 	{ MODKEY|ShiftMask, 			XK_q,      					quit,			{0} },
+	{ MODKEY|ControlMask|ShiftMask,	XK_q,      					quit,           {1} },
 };
 
 /* button definitions */

dwm.1

@@ -193,6 +193,9 @@ Add/remove all windows with nth tag to/from the view.
 .TP
 .B Mod1\-Shift\-q
 Quit dwm.
+.TP
+.B Mod1\-Control\-Shift\-q
+Restart dwm.
 .SS Mouse commands
 .TP
 .B Mod1\-Button1
@@ -218,6 +221,13 @@ This file is started before any autostart.sh; dwm waits for its termination.
 .SH CUSTOMIZATION
 dwm is customized by creating a custom config.h and (re)compiling the source
 code. This keeps it fast, secure and simple.
+.SH SIGNALS
+.TP
+.B SIGHUP - 1
+Restart the dwm process.
+.TP
+.B SIGTERM - 15
+Cleanly terminate the dwm process.
 .SH SEE ALSO
 .BR rofi (1),
 .BR st (1)

dwm.c

@@ -240,6 +240,8 @@ static void setup(void);
 static void seturgent(Client *c, int urg);
 static void showhide(Client *c);
 static void sigchld(int unused);
+static void sighup(int unused);
+static void sigterm(int unused);
 static void spawn(const Arg *arg);
 static Monitor *systraytomon(Monitor *m);
 static void tag(const Arg *arg);
@@ -316,6 +318,7 @@ static void (*handler[LASTEvent]) (XEvent *) = {
 	[UnmapNotify] = unmapnotify
 };
 static Atom wmatom[WMLast], netatom[NetLast], xatom[XLast];
+static int restart = 0;
 static int running = 1;
 static Cur *cursor[CurLast];
 static Clr **scheme;
@@ -1456,6 +1459,7 @@ propertynotify(XEvent *e)
 void
 quit(const Arg *arg)
 {
+	if(arg->i) restart = 1;
 	running = 0;
 }
 
@@ -1900,6 +1904,9 @@ setup(void)
 	/* clean up any zombies immediately */
 	sigchld(0);
 
+	signal(SIGHUP, sighup);
+	signal(SIGTERM, sigterm);
+
 	/* init screen */
 	screen = DefaultScreen(dpy);
 	sw = DisplayWidth(dpy, screen);
@@ -2009,6 +2016,20 @@ sigchld(int unused)
 	while (0 < waitpid(-1, NULL, WNOHANG));
 }
 
+void
+sighup(int unused)
+{
+	Arg a = {.i = 1};
+	quit(&a);
+}
+
+void
+sigterm(int unused)
+{
+	Arg a = {.i = 0};
+	quit(&a);
+}
+
 void
 spawn(const Arg *arg)
 {
@@ -2691,6 +2712,7 @@ main(int argc, char *argv[])
 	runautostart();
 	run();
 	runautoquit();
+	if(restart) execvp(argv[0], argv);
 	cleanup();
 	XCloseDisplay(dpy);
 	return EXIT_SUCCESS;