diff --git a/calmwm.c b/calmwm.c
index ea017e1..39f53d8 100644
--- a/calmwm.c
+++ b/calmwm.c
@@ -94,7 +94,7 @@ main(int argc, char **argv)
 	    signal(SIGINT, sighdlr) == SIG_ERR ||
 	    signal(SIGTERM, sighdlr) == SIG_ERR)
 		err(1, "signal");
- 
+
 	if (parse_config(Conf.conf_file, &Conf) == -1) {
 		warnx("error parsing config file");
 		if (nflag)
diff --git a/calmwm.h b/calmwm.h
index 95e3c8d..b3992c3 100644
--- a/calmwm.h
+++ b/calmwm.h
@@ -235,6 +235,7 @@ struct screen_ctx {
 	struct region_q		 regionq;
 	struct group_q		 groupq;
 	struct group_ctx	*group_active;
+	struct group_ctx	*group_last;
 	Colormap		 colormap;
 	Visual			*visual;
 	struct {
@@ -329,30 +330,39 @@ struct conf {
 
 /* MWM hints */
 struct mwm_hints {
-#define MWM_HINTS_ELEMENTS	3L
-#define MWM_FLAGS_STATUS	(1<<3)
+#define MWM_HINTS_ELEMENTS	5L
 
-#define MWM_FLAGS_FUNCTIONS	(1<<0)
-#define MWM_FLAGS_DECORATIONS	(1<<1)
-#define MWM_FLAGS_INPUT_MODE	(1<<2)
+#define MWM_HINTS_FUNCTIONS	(1L << 0)
+#define MWM_HINTS_DECORATIONS	(1L << 1)
+#define MWM_HINTS_INPUT_MODE	(1L << 2)
+#define MWM_HINTS_STATUS	(1L << 3)
 	unsigned long	flags;
 
-#define MWM_FUNCS_ALL		(1<<0)
-#define MWM_FUNCS_RESIZE	(1<<1)
-#define MWM_FUNCS_MOVE		(1<<2)
-#define MWM_FUNCS_MINIMIZE	(1<<3)
-#define MWM_FUNCS_MAXIMIZE	(1<<4)
-#define MWM_FUNCS_CLOSE		(1<<5)
+#define MWM_FUNC_ALL		(1L << 0)
+#define MWM_FUNC_RESIZE		(1L << 1)
+#define MWM_FUNC_MOVE		(1L << 2)
+#define MWM_FUNC_MINIMIZE	(1L << 3)
+#define MWM_FUNC_MAXIMIZE	(1L << 4)
+#define MWM_FUNC_CLOSE		(1L << 5)
 	unsigned long	functions;
 
-#define	MWM_DECOR_ALL		(1<<0)
-#define	MWM_DECOR_BORDER	(1<<1)
-#define MWM_DECOR_RESIZE_HANDLE	(1<<2)
-#define MWM_DECOR_TITLEBAR	(1<<3)
-#define MWM_DECOR_MENU		(1<<4)
-#define MWM_DECOR_MINIMIZE	(1<<5)
-#define MWM_DECOR_MAXIMIZE	(1<<6)
+#define	MWM_DECOR_ALL		(1L << 0)
+#define	MWM_DECOR_BORDER	(1L << 1)
+#define MWM_DECOR_RESIZEH	(1L << 2)
+#define MWM_DECOR_TITLE		(1L << 3)
+#define MWM_DECOR_MENU		(1L << 4)
+#define MWM_DECOR_MINIMIZE	(1L << 5)
+#define MWM_DECOR_MAXIMIZE	(1L << 6)
 	unsigned long	decorations;
+
+#define MWM_INPUT_MODELESS			0
+#define MWM_INPUT_PRIMARY_APPLICATION_MODAL	1
+#define MWM_INPUT_SYSTEM_MODAL			2
+#define MWM_INPUT_FULL_APPLICATION_MODAL	3
+	long		inputMode;
+
+#define MWM_TEAROFF_WINDOW	(1L << 0)
+	unsigned long	status;
 };
 
 enum cwmh {
@@ -524,6 +534,7 @@ void			 kbfunc_client_toggle_group(void *, struct cargs *);
 void			 kbfunc_client_movetogroup(void *, struct cargs *);
 void			 kbfunc_group_toggle(void *, struct cargs *);
 void			 kbfunc_group_only(void *, struct cargs *);
+void			 kbfunc_group_last(void *, struct cargs *);
 void			 kbfunc_group_close(void *, struct cargs *);
 void			 kbfunc_group_cycle(void *, struct cargs *);
 void			 kbfunc_group_toggle_all(void *, struct cargs *);
@@ -597,7 +608,7 @@ int			 xu_ewmh_get_net_wm_desktop(struct client_ctx *, long *);
 void			 xu_ewmh_set_net_wm_desktop(struct client_ctx *);
 Atom 			*xu_ewmh_get_net_wm_state(struct client_ctx *, int *);
 void 			 xu_ewmh_handle_net_wm_state_msg(struct client_ctx *,
-			     int, Atom , Atom);
+			     int, Atom, Atom);
 void 			 xu_ewmh_set_net_wm_state(struct client_ctx *);
 void 			 xu_ewmh_restore_net_wm_state(struct client_ctx *);
 
diff --git a/client.c b/client.c
index f9262f8..59bc7b0 100644
--- a/client.c
+++ b/client.c
@@ -637,7 +637,7 @@ void
 client_wm_hints(struct client_ctx *cc)
 {
 	XWMHints	*wmh;
- 
+
 	if ((wmh = XGetWMHints(X_Dpy, cc->win)) != NULL) {
 		if ((wmh->flags & InputHint) && (wmh->input))
 			cc->flags |= CLIENT_INPUT;
@@ -849,13 +849,15 @@ client_mwm_hints(struct client_ctx *cc)
 
 	if (xu_get_prop(cc->win, cwmh[_MOTIF_WM_HINTS],
 	    cwmh[_MOTIF_WM_HINTS], MWM_HINTS_ELEMENTS,
-	    (unsigned char **)&mwmh) == MWM_HINTS_ELEMENTS) {
-		if (mwmh->flags & MWM_FLAGS_DECORATIONS &&
-		    !(mwmh->decorations & MWM_DECOR_ALL) &&
-		    !(mwmh->decorations & MWM_DECOR_BORDER))
+	    (unsigned char **)&mwmh) <= 0)
+		return;
+
+	if ((mwmh->flags & MWM_HINTS_DECORATIONS) &&
+	    !(mwmh->decorations & MWM_DECOR_ALL)) {
+		if (!(mwmh->decorations & MWM_DECOR_BORDER))
 			cc->bwidth = 0;
-		XFree(mwmh);
 	}
+	XFree(mwmh);
 }
 
 void
diff --git a/conf.c b/conf.c
index 53ca295..7d3ae6e 100644
--- a/conf.c
+++ b/conf.c
@@ -139,6 +139,7 @@ static const struct {
 
 	{ FUNC_SC(group-cycle, group_cycle, (CWM_CYCLE_FORWARD)) },
 	{ FUNC_SC(group-rcycle, group_cycle, (CWM_CYCLE_REVERSE)) },
+	{ FUNC_SC(group-last, group_last, 0) },
 	{ FUNC_SC(group-toggle-all, group_toggle_all, 0) },
 	{ FUNC_SC(group-toggle-1, group_toggle, 1) },
 	{ FUNC_SC(group-toggle-2, group_toggle, 2) },
@@ -647,7 +648,7 @@ conf_unbind_mouse(struct conf *c, struct bind_ctx *unbind)
 	struct bind_ctx		*mb = NULL, *mbnxt;
 
 	TAILQ_FOREACH_SAFE(mb, &c->mousebindq, entry, mbnxt) {
-		if ((unbind == NULL) || 
+		if ((unbind == NULL) ||
 		    ((mb->modmask == unbind->modmask) &&
 		     (mb->press.button == unbind->press.button))) {
 			TAILQ_REMOVE(&c->mousebindq, mb, entry);
@@ -669,6 +670,8 @@ conf_grab_kbd(Window win)
 
 	TAILQ_FOREACH(kb, &Conf.keybindq, entry) {
 		kc = XKeysymToKeycode(X_Dpy, kb->press.keysym);
+		if (kc == 0)
+			continue;
 		if ((XkbKeycodeToKeysym(X_Dpy, kc, 0, 0) != kb->press.keysym) &&
 		    (XkbKeycodeToKeysym(X_Dpy, kc, 0, 1) == kb->press.keysym))
 			kb->modmask |= ShiftMask;
diff --git a/cwmrc.5 b/cwmrc.5
index ab70d25..7075288 100644
--- a/cwmrc.5
+++ b/cwmrc.5
@@ -273,6 +273,8 @@ menu.
 Toggle visibility of group n, where n is 1-9.
 .It group-only-[n]
 Show only group n, where n is 1-9, hiding other groups.
+.It group-last
+Show only the previously active group.
 .It group-close-[n]
 Close all windows in group n, where n is 1-9.
 .It group-toggle-all
diff --git a/group.c b/group.c
index 59eae73..af4c759 100644
--- a/group.c
+++ b/group.c
@@ -215,6 +215,9 @@ group_only(struct screen_ctx *sc, int idx)
 {
 	struct group_ctx	*gc;
 
+	if (sc->group_last != sc->group_active)
+		sc->group_last = sc->group_active;
+
 	TAILQ_FOREACH(gc, &sc->groupq, entry) {
 		if (gc->num == idx)
 			group_show(gc);
diff --git a/kbfunc.c b/kbfunc.c
index 2d5d1ce..ed1d7cb 100644
--- a/kbfunc.c
+++ b/kbfunc.c
@@ -453,7 +453,16 @@ kbfunc_client_cycle(void *ctx, struct cargs *cargs)
 		newcc->ptr.x = newcc->geom.w / 2;
 		newcc->ptr.y = newcc->geom.h / 2;
 	}
-	client_ptr_warp(newcc);
+
+	/* When no client is active, warp pointer to last active. */
+	if (oldcc->flags & (CLIENT_ACTIVE))
+		client_ptr_warp(newcc);
+	else if (oldcc->flags & (CLIENT_SKIP_CYCLE))
+		client_ptr_warp(newcc);
+	else {
+		client_raise(oldcc);
+		client_ptr_warp(oldcc);
+	}
 }
 
 void
@@ -481,6 +490,14 @@ kbfunc_group_only(void *ctx, struct cargs *cargs)
 	group_only(ctx, cargs->flag);
 }
 
+void
+kbfunc_group_last(void *ctx, struct cargs *cargs)
+{
+	struct screen_ctx	*sc = ctx;
+
+	group_only(ctx, sc->group_last->num);
+}
+
 void
 kbfunc_group_toggle(void *ctx, struct cargs *cargs)
 {
@@ -663,7 +680,7 @@ kbfunc_menu_exec(void *ctx, struct cargs *cargs)
 				/* lstat(2) in case d_type isn't supported. */
 				if (lstat(tpath, &sb) == -1)
 					continue;
-				if (!S_ISREG(sb.st_mode) && 
+				if (!S_ISREG(sb.st_mode) &&
 				    !S_ISLNK(sb.st_mode))
 					continue;
 			}
diff --git a/parse.y b/parse.y
index 383b2dd..d0407a7 100644
--- a/parse.y
+++ b/parse.y
@@ -83,7 +83,7 @@ typedef struct {
 %token	<v.string>		STRING
 %token	<v.number>		NUMBER
 %type	<v.number>		yesno
-%type	<v.string>		string
+%type	<v.string>		string numberstring
 %%
 
 grammar		: /* empty */
@@ -106,6 +106,17 @@ string		: string STRING			{
 		| STRING
 		;
 
+numberstring	: NUMBER				{
+			char	*s;
+			if (asprintf(&s, "%lld", $1) == -1) {
+				yyerror("string: asprintf");
+				YYERROR;
+			}
+			$$ = s;
+		}
+		| STRING
+		;
+
 yesno		: YES				{ $$ = 1; }
 		| NO				{ $$ = 0; }
 		;
@@ -211,7 +222,7 @@ main		: FONTNAME STRING		{
 			conf->gap.left = $4;
 			conf->gap.right = $5;
 		}
-		| BINDKEY STRING string {
+		| BINDKEY numberstring string {
 			if (!conf_bind_key(conf, $2, $3)) {
 				yyerror("invalid bind-key: %s %s", $2, $3);
 				free($2);
@@ -221,7 +232,7 @@ main		: FONTNAME STRING		{
 			free($2);
 			free($3);
 		}
-		| UNBINDKEY STRING {
+		| UNBINDKEY numberstring {
 			if (!conf_bind_key(conf, $2, NULL)) {
 				yyerror("invalid unbind-key: %s", $2);
 				free($2);
@@ -229,7 +240,7 @@ main		: FONTNAME STRING		{
 			}
 			free($2);
 		}
-		| BINDMOUSE STRING string {
+		| BINDMOUSE numberstring string {
 			if (!conf_bind_mouse(conf, $2, $3)) {
 				yyerror("invalid bind-mouse: %s %s", $2, $3);
 				free($2);
@@ -239,7 +250,7 @@ main		: FONTNAME STRING		{
 			free($2);
 			free($3);
 		}
-		| UNBINDMOUSE STRING {
+		| UNBINDMOUSE numberstring {
 			if (!conf_bind_mouse(conf, $2, NULL)) {
 				yyerror("invalid unbind-mouse: %s", $2);
 				free($2);
@@ -376,7 +387,7 @@ lgetc(int quotec)
 	if (parsebuf) {
 		/* Read character from the parsebuffer instead of input. */
 		if (parseindex >= 0) {
-			c = parsebuf[parseindex++];
+			c = (unsigned char)parsebuf[parseindex++];
 			if (c != '\0')
 				return (c);
 			parsebuf = NULL;
@@ -385,7 +396,7 @@ lgetc(int quotec)
 	}
 
 	if (pushback_index)
-		return (pushback_buffer[--pushback_index]);
+		return ((unsigned char)pushback_buffer[--pushback_index]);
 
 	if (quotec) {
 		if ((c = getc(file->stream)) == EOF) {
@@ -426,10 +437,10 @@ lungetc(int c)
 		if (parseindex >= 0)
 			return (c);
 	}
-	if (pushback_index < MAXPUSHBACK-1)
-		return (pushback_buffer[pushback_index++] = c);
-	else
+	if (pushback_index + 1 >= MAXPUSHBACK)
 		return (EOF);
+	pushback_buffer[pushback_index++] = c;
+	return (c);
 }
 
 int
@@ -442,7 +453,7 @@ findeol(void)
 	/* skip to either EOF or the first real EOL */
 	while (1) {
 		if (pushback_index)
-			c = pushback_buffer[--pushback_index];
+			c = (unsigned char)pushback_buffer[--pushback_index];
 		else
 			c = lgetc(0);
 		if (c == '\n') {
@@ -516,7 +527,7 @@ yylex(void)
 	if (c == '-' || isdigit(c)) {
 		do {
 			*p++ = c;
-			if ((unsigned)(p-buf) >= sizeof(buf)) {
+			if ((size_t)(p-buf) >= sizeof(buf)) {
 				yyerror("string too long");
 				return (findeol());
 			}
@@ -539,8 +550,8 @@ yylex(void)
 		} else {
 nodigits:
 			while (p > buf + 1)
-				lungetc(*--p);
-			c = *--p;
+				lungetc((unsigned char)*--p);
+			c = (unsigned char)*--p;
 			if (c == '-')
 				return (c);
 		}
@@ -555,7 +566,7 @@ nodigits:
 	if (isalnum(c) || c == ':' || c == '_' || c == '*' || c == '/') {
 		do {
 			*p++ = c;
-			if ((unsigned)(p-buf) >= sizeof(buf)) {
+			if ((size_t)(p-buf) >= sizeof(buf)) {
 				yyerror("string too long");
 				return (findeol());
 			}
diff --git a/screen.c b/screen.c
index 59b6eff..8e4df53 100644
--- a/screen.c
+++ b/screen.c
@@ -60,6 +60,7 @@ screen_init(int which)
 	xu_ewmh_net_supported_wm_check(sc);
 
 	conf_group(sc);
+	sc->group_last = sc->group_active;
 	screen_update_geometry(sc);
 
 	xu_ewmh_net_desktop_names(sc);