bump version to 6.5

The Makefile used to suppress output (by using @), so this target made sense at
the time.

But the Makefile should be simple and make debugging with less abstractions or
fancy printing.  The Makefile was made verbose and doesn't hide the build
output, so remove this target.

Prompted by a question on the mailing list about the options target.

Makefile

@@ -6,13 +6,7 @@ include config.mk
 SRC = drw.c dwm.c util.c
 OBJ = ${SRC:.c=.o}
 
-all: options dwm
-
-options:
-	@echo dwm build options:
-	@echo "CFLAGS   = ${CFLAGS}"
-	@echo "LDFLAGS  = ${LDFLAGS}"
-	@echo "CC       = ${CC}"
+all: dwm
 
 .c.o:
 	${CC} -c ${CFLAGS} $<
@@ -48,4 +42,4 @@ uninstall:
 	rm -f ${DESTDIR}${PREFIX}/bin/dwm\
 		${DESTDIR}${MANPREFIX}/man1/dwm.1
 
-.PHONY: all options clean dist install uninstall
+.PHONY: all clean dist install uninstall

config.def.h

@@ -56,7 +56,8 @@ static const Layout layouts[] = {
 #define SHCMD(cmd) { .v = (const char*[]){ "/bin/sh", "-c", cmd, NULL } }
 
 /* commands */
-static const char *dmenucmd[] = { "dmenu_run", "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_cyan, "-sf", col_gray4, NULL };
+static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn() */
+static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_cyan, "-sf", col_gray4, NULL };
 static const char *termcmd[]  = { "st", NULL };
 
 static const Key keys[] = {

config.mk

@@ -1,5 +1,5 @@
 # dwm version
-VERSION = 6.4
+VERSION = 6.5
 
 # Customize below to fit your system
 
@@ -26,7 +26,7 @@ INCS = -I${X11INC} -I${FREETYPEINC}
 LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
 
 # flags
-CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=200809L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
+CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
 #CFLAGS   = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
 CFLAGS   = -std=c99 -pedantic -Wall -Wno-deprecated-declarations -Os ${INCS} ${CPPFLAGS}
 LDFLAGS  = ${LIBS}

dwm.c

@@ -205,7 +205,6 @@ static void setmfact(const Arg *arg);
 static void setup(void);
 static void seturgent(Client *c, int urg);
 static void showhide(Client *c);
-static void sigchld(int unused);
 static void spawn(const Arg *arg);
 static void tag(const Arg *arg);
 static void tagmon(const Arg *arg);
@@ -955,16 +954,26 @@ grabkeys(void)
 {
 	updatenumlockmask();
 	{
-		unsigned int i, j;
+		unsigned int i, j, k;
 		unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
-		KeyCode code;
+		int start, end, skip;
+		KeySym *syms;
 
 		XUngrabKey(dpy, AnyKey, AnyModifier, root);
-		for (i = 0; i < LENGTH(keys); i++)
-			if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
-				for (j = 0; j < LENGTH(modifiers); j++)
-					XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
-						True, GrabModeAsync, GrabModeAsync);
+		XDisplayKeycodes(dpy, &start, &end);
+		syms = XGetKeyboardMapping(dpy, start, end - start + 1, &skip);
+		if (!syms)
+			return;
+		for (k = start; k <= end; k++)
+			for (i = 0; i < LENGTH(keys); i++)
+				/* skip modifier codes, we do that ourselves */
+				if (keys[i].keysym == syms[(k - start) * skip])
+					for (j = 0; j < LENGTH(modifiers); j++)
+						XGrabKey(dpy, k,
+							 keys[i].mod | modifiers[j],
+							 root, True,
+							 GrabModeAsync, GrabModeAsync);
+		XFree(syms);
 	}
 }
 
@@ -1533,9 +1542,16 @@ setup(void)
 	int i;
 	XSetWindowAttributes wa;
 	Atom utf8string;
+	struct sigaction sa;
 
-	/* clean up any zombies immediately */
-	sigchld(0);
+	/* do not transform children into zombies when they terminate */
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = SA_NOCLDSTOP | SA_NOCLDWAIT | SA_RESTART;
+	sa.sa_handler = SIG_IGN;
+	sigaction(SIGCHLD, &sa, NULL);
+
+	/* clean up any zombies (inherited from .xinitrc etc) immediately */
+	while (waitpid(-1, NULL, WNOHANG) > 0);
 
 	/* init screen */
 	screen = DefaultScreen(dpy);
@@ -1628,21 +1644,23 @@ showhide(Client *c)
 	}
 }
 
-void
-sigchld(int unused)
-{
-	if (signal(SIGCHLD, sigchld) == SIG_ERR)
-		die("can't install SIGCHLD handler:");
-	while (0 < waitpid(-1, NULL, WNOHANG));
-}
-
 void
 spawn(const Arg *arg)
 {
+	struct sigaction sa;
+
+	if (arg->v == dmenucmd)
+		dmenumon[0] = '0' + selmon->num;
 	if (fork() == 0) {
 		if (dpy)
 			close(ConnectionNumber(dpy));
 		setsid();
+
+		sigemptyset(&sa.sa_mask);
+		sa.sa_flags = 0;
+		sa.sa_handler = SIG_DFL;
+		sigaction(SIGCHLD, &sa, NULL);
+
 		execvp(((char **)arg->v)[0], (char **)arg->v);
 		die("dwm: execvp '%s' failed:", ((char **)arg->v)[0]);
 	}