rearranged several stuff

10 files changed, 442 insertions, 444 deletions

diff --git a/Makefile b/Makefile
index e2caadd9..3433894d 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@
 
 include config.mk
 
-SRC = client.c draw.c event.c key.c main.c screen.c util.c
+SRC = client.c draw.c event.c main.c tag.c util.c
 OBJ = ${SRC:.c=.o}
 MAN1 = dwm.1 
 BIN = dwm
diff --git a/client.c b/client.c
index 7bb84590..169c01e5 100644
--- a/client.c
+++ b/client.c
@@ -11,18 +11,6 @@
 
 #include "dwm.h"
 
-static Rule rule[] = {
-	/* class			instance	tags						floating */
-	{ "Firefox-bin",	"Gecko",	{ [Twww] = "www" },			False },
-};
-
-Client *
-getnext(Client *c)
-{
-	for(; c && !c->tags[tsel]; c = c->next);
-	return c;
-}
-
 void
 ban(Client *c)
 {
@@ -31,7 +19,7 @@ ban(Client *c)
 }
 
 static void
-resize_title(Client *c)
+resizetitle(Client *c)
 {
 	int i;
 
@@ -72,7 +60,7 @@ settitle(Client *c)
 		}
 	}
 	XFree(name.value);
-	resize_title(c);
+	resizetitle(c);
 }
 
 void
@@ -143,42 +131,6 @@ focus(Client *c)
 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 }
 
-static void
-init_tags(Client *c)
-{
-	XClassHint ch;
-	static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
-	unsigned int i, j;
-	Bool matched = False;
-
-	if(!len) {
-		c->tags[tsel] = tags[tsel];
-		return;
-	}
-
-	if(XGetClassHint(dpy, c->win, &ch)) {
-		if(ch.res_class && ch.res_name) {
-			for(i = 0; i < len; i++)
-				if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
-					&& !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
-				{
-					for(j = 0; j < TLast; j++)
-						c->tags[j] = rule[i].tags[j];
-					c->floating = rule[i].floating;
-					matched = True;
-					break;
-				}
-		}
-		if(ch.res_class)
-			XFree(ch.res_class);
-		if(ch.res_name)
-			XFree(ch.res_name);
-	}
-
-	if(!matched)
-		c->tags[tsel] = tags[tsel];
-}
-
 void
 manage(Window w, XWindowAttributes *wa)
 {
@@ -196,7 +148,7 @@ manage(Window w, XWindowAttributes *wa)
 	c->h = wa->height;
 	c->th = bh;
 	c->border = 1;
-	c->proto = proto(c->win);
+	c->proto = getproto(c->win);
 	setsize(c);
 	XSelectInput(dpy, c->win,
 			StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
@@ -211,7 +163,7 @@ manage(Window w, XWindowAttributes *wa)
 			CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 
 	settitle(c);
-	init_tags(c);
+	settags(c);
 
 	for(l = &clients; *l; l = &(*l)->next);
 	c->next = *l; /* *l == nil */
@@ -224,8 +176,8 @@ manage(Window w, XWindowAttributes *wa)
 	XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 			GrabModeAsync, GrabModeSync, None, None);
 
-	if(!c->floating)
-		c->floating = trans
+	if(!c->dofloat)
+		c->dofloat = trans
 			|| ((c->maxw == c->minw) && (c->maxh == c->minh));
 
 	arrange(NULL);
@@ -321,7 +273,7 @@ resize(Client *c, Bool inc)
 		c->w = c->maxw;
 	if(c->maxh && c->h > c->maxh)
 		c->h = c->maxh;
-	resize_title(c);
+	resizetitle(c);
 	XSetWindowBorderWidth(dpy, c->win, 1);
 	XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 	e.type = ConfigureNotify;
@@ -339,7 +291,7 @@ resize(Client *c, Bool inc)
 }
 
 static int
-dummy_xerror(Display *dsply, XErrorEvent *err)
+xerrordummy(Display *dsply, XErrorEvent *ee)
 {
 	return 0;
 }
@@ -350,7 +302,7 @@ unmanage(Client *c)
 	Client **l;
 
 	XGrabServer(dpy);
-	XSetErrorHandler(dummy_xerror);
+	XSetErrorHandler(xerrordummy);
 
 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 	XDestroyWindow(dpy, c->title);
@@ -374,7 +326,7 @@ unmanage(Client *c)
 }
 
 Client *
-gettitle(Window w)
+getctitle(Window w)
 {
 	Client *c;
 	for(c = clients; c; c = c->next)
@@ -392,3 +344,80 @@ getclient(Window w)
 			return c;
 	return NULL;
 }
+
+void
+zoom(Arg *arg)
+{
+	Client **l, *c;
+
+	if(!sel)
+		return;
+
+	if(sel == getnext(clients) && sel->next)  {
+		if((c = getnext(sel->next)))
+			sel = c;
+	}
+
+	for(l = &clients; *l && *l != sel; l = &(*l)->next);
+	*l = sel->next;
+
+	sel->next = clients; /* pop */
+	clients = sel;
+	arrange(NULL);
+	focus(sel);
+}
+
+void
+maximize(Arg *arg)
+{
+	if(!sel)
+		return;
+	sel->x = sx;
+	sel->y = sy + bh;
+	sel->w = sw - 2 * sel->border;
+	sel->h = sh - 2 * sel->border - bh;
+	higher(sel);
+	resize(sel, False);
+}
+
+void
+focusprev(Arg *arg)
+{
+	Client *c;
+
+	if(!sel)
+		return;
+
+	if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
+		higher(c);
+		focus(c);
+	}
+}
+
+void
+focusnext(Arg *arg)
+{
+	Client *c;
+   
+	if(!sel)
+		return;
+
+	if(!(c = getnext(sel->next)))
+		c = getnext(clients);
+	if(c) {
+		higher(c);
+		c->revert = sel;
+		focus(c);
+	}
+}
+
+void
+killclient(Arg *arg)
+{
+	if(!sel)
+		return;
+	if(sel->proto & WM_PROTOCOL_DELWIN)
+		sendevent(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
+	else
+		XKillClient(dpy, sel->win);
+}
diff --git a/draw.c b/draw.c
index 6a7fea97..4c47c1a8 100644
--- a/draw.c
+++ b/draw.c
@@ -11,33 +11,42 @@
 #include "dwm.h"
 
 void
+drawall()
+{
+	Client *c;
+
+	for(c = clients; c; c = getnext(c->next))
+		drawtitle(c);
+	drawstatus();
+}
+
+void
 drawstatus()
 {
 	int i;
+	Bool istile = arrange == dotile;
 
 	dc.x = dc.y = 0;
 	dc.w = bw;
-	drawtext(NULL, False, False);
+	drawtext(NULL, !istile, False);
 
-	if(arrange == floating) {
-		dc.w = textw("~");
-		drawtext("~", False, False);
-	}
-	else
-		dc.w = 0;
+	dc.w = 0;
 	for(i = 0; i < TLast; i++) {
 		dc.x += dc.w;
 		dc.w = textw(tags[i]);
-		drawtext(tags[i], i == tsel, True);
+		if(istile)
+			drawtext(tags[i], (i == tsel), True);
+		else
+			drawtext(tags[i], (i != tsel), True);
 	}
 	if(sel) {
 		dc.x += dc.w;
 		dc.w = textw(sel->name);
-		drawtext(sel->name, True, True);
+		drawtext(sel->name, istile, True);
 	}
 	dc.w = textw(stext);
 	dc.x = bx + bw - dc.w;
-	drawtext(stext, False, False);
+	drawtext(stext, !istile, False);
 
 	XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 	XFlush(dpy);
@@ -47,6 +56,8 @@ void
 drawtitle(Client *c)
 {
 	int i;
+	Bool istile = arrange == dotile;
+
 	if(c == sel) {
 		drawstatus();
 		XUnmapWindow(dpy, c->title);
@@ -64,12 +75,12 @@ drawtitle(Client *c)
 		if(c->tags[i]) {
 			dc.x += dc.w;
 			dc.w = textw(c->tags[i]);
-			drawtext(c->tags[i], False, True);
+			drawtext(c->tags[i], !istile, True);
 		}
 	}
 	dc.x += dc.w;
 	dc.w = textw(c->name);
-	drawtext(c->name, False, True);
+	drawtext(c->name, !istile, True);
 	XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 			0, 0, c->tw, c->th, 0, 0);
 	XFlush(dpy);
@@ -215,7 +226,7 @@ setfont(const char *fontstr)
 		if (!dc.font.xfont)
 			dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 		if (!dc.font.xfont)
-			error("error, cannot init 'fixed' font\n");
+			eprint("error, cannot init 'fixed' font\n");
 		dc.font.ascent = dc.font.xfont->ascent;
 		dc.font.descent = dc.font.xfont->descent;
 	}
diff --git a/dwm.h b/dwm.h
index def66bfd..c1718052 100644
--- a/dwm.h
+++ b/dwm.h
@@ -66,7 +66,7 @@ struct Client {
 	int grav;
 	unsigned int border;
 	long flags; 
-	Bool floating;
+	Bool dofloat;
 	Window win;
 	Window title;
 	Client *next;
@@ -77,7 +77,7 @@ struct Rule {
 	const char *class;
 	const char *instance;
 	char *tags[TLast];
-	Bool floating;
+	Bool dofloat;
 };
 
 struct Key {
@@ -103,6 +103,7 @@ extern DC dc;
 extern Client *clients, *sel;
 
 /* client.c */
+extern void ban(Client *c);
 extern void manage(Window w, XWindowAttributes *wa);
 extern void unmanage(Client *c);
 extern Client *getclient(Window w);
@@ -110,14 +111,18 @@ extern void focus(Client *c);
 extern void settitle(Client *c);
 extern void resize(Client *c, Bool inc);
 extern void setsize(Client *c);
-extern Client *gettitle(Window w);
+extern Client *getctitle(Window w);
 extern void higher(Client *c);
 extern void lower(Client *c);
 extern void gravitate(Client *c, Bool invert);
-extern void ban(Client *c);
-extern Client *getnext(Client *c);
+extern void zoom(Arg *arg);
+extern void maximize(Arg *arg);
+extern void focusprev(Arg *arg);
+extern void focusnext(Arg *arg);
+extern void killclient(Arg *arg);
 
 /* draw.c */
+extern void drawall();
 extern void drawstatus();
 extern void drawtitle(Client *c);
 extern void drawtext(const char *text, Bool invert, Bool border);
@@ -127,22 +132,25 @@ extern unsigned int textnw(char *text, unsigned int len);
 extern unsigned int textw(char *text);
 extern unsigned int texth(void);
 
-/* key.c */
+/* event.c */
 extern void grabkeys();
-extern void keypress(XEvent *e);
 
 /* main.c */
-extern int xerror(Display *dsply, XErrorEvent *e);
-extern void sendevent(Window w, Atom a, long value);
-extern int proto(Window w);
 extern void quit(Arg *arg);
+extern int xerror(Display *dsply, XErrorEvent *ee);
+extern void sendevent(Window w, Atom a, long value);
+extern int getproto(Window w);
 
-/* screen.c */
-extern void floating(Arg *arg);
-extern void tiling(Arg *arg);
+/* tag.c */
+extern Client *getnext(Client *c);
+extern void settags(Client *c);
+extern void dofloat(Arg *arg);
+extern void dotile(Arg *arg);
 extern void view(Arg *arg);
+extern void appendtag(Arg *arg);
+extern void replacetag(Arg *arg);
 
 /* util.c */
-extern void error(const char *errstr, ...);
+extern void eprint(const char *errstr, ...);
 extern void *emallocz(unsigned int size);
 extern void spawn(Arg *arg);
diff --git a/event.c b/event.c
index 2e0b75fd..59c9bb94 100644
--- a/event.c
+++ b/event.c
@@ -16,6 +16,44 @@
 #define ButtonMask      (ButtonPressMask | ButtonReleaseMask)
 #define MouseMask       (ButtonMask | PointerMotionMask)
 
+/********** CUSTOMIZE **********/
+
+const char *term[] = { 
+	"urxvtc", "-tr", "+sb", "-bg", "black", "-fg", "white", "-fn",
+	"-*-terminus-medium-*-*-*-13-*-*-*-*-*-iso10646-*",NULL
+};
+const char *browse[] = { "firefox", NULL };
+const char *xlock[] = { "xlock", NULL };
+
+Key key[] = {
+	/* modifier				key			function	arguments */
+	{ Mod1Mask,				XK_Return,	zoom,		{ 0 } },
+	{ Mod1Mask,				XK_k,		focusprev,		{ 0 } },
+	{ Mod1Mask,				XK_j,		focusnext,		{ 0 } }, 
+	{ Mod1Mask,				XK_m,		maximize,		{ 0 } }, 
+	{ Mod1Mask,				XK_0,		view,		{ .i = Tscratch } }, 
+	{ Mod1Mask,				XK_1,		view,		{ .i = Tdev } }, 
+	{ Mod1Mask,				XK_2,		view,		{ .i = Twww } }, 
+	{ Mod1Mask,				XK_3,		view,		{ .i = Twork } }, 
+	{ Mod1Mask,				XK_space,	dotile,		{ 0 } }, 
+	{ Mod1Mask|ShiftMask,	XK_space,	dofloat,	{ 0 } }, 
+	{ Mod1Mask|ShiftMask,	XK_0,		replacetag,		{ .i = Tscratch } }, 
+	{ Mod1Mask|ShiftMask,	XK_1,		replacetag,		{ .i = Tdev } }, 
+	{ Mod1Mask|ShiftMask,	XK_2,		replacetag,		{ .i = Twww } }, 
+	{ Mod1Mask|ShiftMask,	XK_3,		replacetag,		{ .i = Twork } }, 
+	{ Mod1Mask|ShiftMask,	XK_c,		killclient,		{ 0 } }, 
+	{ Mod1Mask|ShiftMask,	XK_q,		quit,		{ 0 } },
+	{ Mod1Mask|ShiftMask,	XK_Return,	spawn,		{ .argv = term } },
+	{ Mod1Mask|ShiftMask,	XK_w,		spawn,		{ .argv = browse } },
+	{ Mod1Mask|ShiftMask,	XK_l,		spawn,		{ .argv = xlock } },
+	{ ControlMask,			XK_0,		appendtag,	{ .i = Tscratch } }, 
+	{ ControlMask,			XK_1,		appendtag,	{ .i = Tdev } }, 
+	{ ControlMask,			XK_2,		appendtag,	{ .i = Twww } }, 
+	{ ControlMask,			XK_3,		appendtag,	{ .i = Twork } }, 
+};
+
+/********** CUSTOMIZE **********/
+
 /* local functions */
 static void buttonpress(XEvent *e);
 static void configurerequest(XEvent *e);
@@ -23,6 +61,7 @@ static void destroynotify(XEvent *e);
 static void enternotify(XEvent *e);
 static void leavenotify(XEvent *e);
 static void expose(XEvent *e);
+static void keypress(XEvent *e);
 static void maprequest(XEvent *e);
 static void propertynotify(XEvent *e);
 static void unmapnotify(XEvent *e);
@@ -40,8 +79,40 @@ void (*handler[LASTEvent]) (XEvent *) = {
 	[UnmapNotify] = unmapnotify
 };
 
+void
+grabkeys()
+{
+	static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
+	unsigned int i;
+	KeyCode code;
+
+	for(i = 0; i < len; i++) {
+		code = XKeysymToKeycode(dpy, key[i].keysym);
+		XUngrabKey(dpy, code, key[i].mod, root);
+		XGrabKey(dpy, code, key[i].mod, root, True,
+				GrabModeAsync, GrabModeAsync);
+	}
+}
+
+static void
+keypress(XEvent *e)
+{
+	XKeyEvent *ev = &e->xkey;
+	static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
+	unsigned int i;
+	KeySym keysym;
+
+	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
+	for(i = 0; i < len; i++)
+		if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
+			if(key[i].func)
+				key[i].func(&key[i].arg);
+			return;
+		}
+}
+
 static void
-mresize(Client *c)
+resizemouse(Client *c)
 {
 	XEvent ev;
 	int ocx, ocy;
@@ -75,7 +146,7 @@ mresize(Client *c)
 }
 
 static void
-mmove(Client *c)
+movemouse(Client *c)
 {
 	XEvent ev;
 	int x1, y1, ocx, ocy, di;
@@ -117,7 +188,7 @@ buttonpress(XEvent *e)
 	Client *c;
 
 	if(barwin == ev->window) {
-		x = (arrange == floating) ? textw("~") : 0;
+		x = (arrange == dofloat) ? textw("~") : 0;
 		for(a.i = 0; a.i < TLast; a.i++) {
 			x += textw(tags[a.i]);
 			if(ev->x < x) {
@@ -127,20 +198,20 @@ buttonpress(XEvent *e)
 		}
 	}
 	else if((c = getclient(ev->window))) {
-		if(arrange == tiling && !c->floating)
+		if(arrange == dotile && !c->dofloat)
 			return;
 		higher(c);
 		switch(ev->button) {
 		default:
 			break;
 		case Button1:
-			mmove(c);
+			movemouse(c);
 			break;
 		case Button2:
 			lower(c);
 			break;
 		case Button3:
-			mresize(c);
+			resizemouse(c);
 			break;
 		}
 	}
@@ -226,7 +297,7 @@ expose(XEvent *e)
 	if(ev->count == 0) {
 		if(barwin == ev->window)
 			drawstatus();
-		else if((c = gettitle(ev->window)))
+		else if((c = getctitle(ev->window)))
 			drawtitle(c);
 	}
 }
@@ -262,14 +333,14 @@ propertynotify(XEvent *e)
 
 	if((c = getclient(ev->window))) {
 		if(ev->atom == wm_atom[WMProtocols]) {
-			c->proto = proto(c->win);
+			c->proto = getproto(c->win);
 			return;
 		}
 		switch (ev->atom) {
 			default: break;
 			case XA_WM_TRANSIENT_FOR:
 				XGetTransientForHint(dpy, c->win, &trans);
-				if(!c->floating && (c->floating = (trans != 0)))
+				if(!c->dofloat && (c->dofloat = (trans != 0)))
 					arrange(NULL);
 				break;
 			case XA_WM_NORMAL_HINTS:
diff --git a/key.c b/key.c
deleted file mode 100644
index f4b0ba1c..00000000
--- a/key.c
+++ /dev/null
@@ -1,192 +0,0 @@
-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <X11/keysym.h>
-#include <X11/Xatom.h>
-
-#include "dwm.h"
-
-static void ckill(Arg *arg);
-static void nextc(Arg *arg);
-static void prevc(Arg *arg);
-static void max(Arg *arg);
-static void ttrunc(Arg *arg);
-static void tappend(Arg *arg);
-static void zoom(Arg *arg);
-
-/********** CUSTOMIZE **********/
-
-const char *term[] = { 
-	"urxvtc", "-tr", "+sb", "-bg", "black", "-fg", "white", "-fn",
-	"-*-terminus-medium-*-*-*-13-*-*-*-*-*-iso10646-*",NULL
-};
-const char *browse[] = { "firefox", NULL };
-const char *xlock[] = { "xlock", NULL };
-
-Key key[] = {
-	/* modifier				key			function	arguments */
-	{ Mod1Mask,				XK_Return,	zoom,		{ 0 } },
-	{ Mod1Mask,				XK_k,		prevc,		{ 0 } },
-	{ Mod1Mask,				XK_j,		nextc,		{ 0 } }, 
-	{ Mod1Mask,				XK_m,		max,		{ 0 } }, 
-	{ Mod1Mask,				XK_0,		view,		{ .i = Tscratch } }, 
-	{ Mod1Mask,				XK_1,		view,		{ .i = Tdev } }, 
-	{ Mod1Mask,				XK_2,		view,		{ .i = Twww } }, 
-	{ Mod1Mask,				XK_3,		view,		{ .i = Twork } }, 
-	{ Mod1Mask,				XK_space,	tiling,		{ 0 } }, 
-	{ Mod1Mask|ShiftMask,	XK_space,	floating,	{ 0 } }, 
-	{ Mod1Mask|ShiftMask,	XK_0,		ttrunc,		{ .i = Tscratch } }, 
-	{ Mod1Mask|ShiftMask,	XK_1,		ttrunc,		{ .i = Tdev } }, 
-	{ Mod1Mask|ShiftMask,	XK_2,		ttrunc,		{ .i = Twww } }, 
-	{ Mod1Mask|ShiftMask,	XK_3,		ttrunc,		{ .i = Twork } }, 
-	{ Mod1Mask|ShiftMask,	XK_c,		ckill,		{ 0 } }, 
-	{ Mod1Mask|ShiftMask,	XK_q,		quit,		{ 0 } },
-	{ Mod1Mask|ShiftMask,	XK_Return,	spawn,		{ .argv = term } },
-	{ Mod1Mask|ShiftMask,	XK_w,		spawn,		{ .argv = browse } },
-	{ Mod1Mask|ShiftMask,	XK_l,		spawn,		{ .argv = xlock } },
-	{ ControlMask,			XK_0,		tappend,	{ .i = Tscratch } }, 
-	{ ControlMask,			XK_1,		tappend,	{ .i = Tdev } }, 
-	{ ControlMask,			XK_2,		tappend,	{ .i = Twww } }, 
-	{ ControlMask,			XK_3,		tappend,	{ .i = Twork } }, 
-};
-
-/********** CUSTOMIZE **********/
-
-void
-grabkeys()
-{
-	static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
-	unsigned int i;
-	KeyCode code;
-
-	for(i = 0; i < len; i++) {
-		code = XKeysymToKeycode(dpy, key[i].keysym);
-		XUngrabKey(dpy, code, key[i].mod, root);
-		XGrabKey(dpy, code, key[i].mod, root, True,
-				GrabModeAsync, GrabModeAsync);
-	}
-}
-
-void
-keypress(XEvent *e)
-{
-	XKeyEvent *ev = &e->xkey;
-	static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
-	unsigned int i;
-	KeySym keysym;
-
-	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
-	for(i = 0; i < len; i++)
-		if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
-			if(key[i].func)
-				key[i].func(&key[i].arg);
-			return;
-		}
-}
-
-static void
-zoom(Arg *arg)
-{
-	Client **l, *c;
-
-	if(!sel)
-		return;
-
-	if(sel == getnext(clients) && sel->next)  {
-		if((c = getnext(sel->next)))
-			sel = c;
-	}
-
-	for(l = &clients; *l && *l != sel; l = &(*l)->next);
-	*l = sel->next;
-
-	sel->next = clients; /* pop */
-	clients = sel;
-	arrange(NULL);
-	focus(sel);
-}
-
-static void
-max(Arg *arg)
-{
-	if(!sel)
-		return;
-	sel->x = sx;
-	sel->y = sy + bh;
-	sel->w = sw - 2 * sel->border;
-	sel->h = sh - 2 * sel->border - bh;
-	higher(sel);
-	resize(sel, False);
-}
-
-static void
-tappend(Arg *arg)
-{
-	if(!sel)
-		return;
-
-	sel->tags[arg->i] = tags[arg->i];
-	arrange(NULL);
-}
-
-static void
-ttrunc(Arg *arg)
-{
-	int i;
-	if(!sel)
-		return;
-
-	for(i = 0; i < TLast; i++)
-		sel->tags[i] = NULL;
-	tappend(arg);
-}
-
-static void
-prevc(Arg *arg)
-{
-	Client *c;
-
-	if(!sel)
-		return;
-
-	if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
-		higher(c);
-		focus(c);
-	}
-}
-
-static void
-nextc(Arg *arg)
-{
-	Client *c;
-   
-	if(!sel)
-		return;
-
-	if(!(c = getnext(sel->next)))
-		c = getnext(clients);
-	if(c) {
-		higher(c);
-		c->revert = sel;
-		focus(c);
-	}
-}
-
-static void
-ckill(Arg *arg)
-{
-	if(!sel)
-		return;
-	if(sel->proto & WM_PROTOCOL_DELWIN)
-		sendevent(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
-	else
-		XKillClient(dpy, sel->win);
-}
-
diff --git a/main.c b/main.c
index a1cf245e..39172ee3 100644
--- a/main.c
+++ b/main.c
@@ -43,16 +43,16 @@ DC dc = {0};
 Client *clients = NULL;
 Client *sel = NULL;
 
-static Bool other_wm_running;
+static Bool otherwm;
 static const char version[] =
 	"dwm-" VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
-static int (*x_xerror) (Display *, XErrorEvent *);
+static int (*xerrorxlib)(Display *, XErrorEvent *);
 
 static void
-usage() {	error("usage: dwm [-v]\n"); }
+usage() {	eprint("usage: dwm [-v]\n"); }
 
 static void
-scan_wins()
+scan()
 {
 	unsigned int i, num;
 	Window *wins;
@@ -73,6 +73,22 @@ scan_wins()
 		XFree(wins);
 }
 
+static void
+cleanup()
+{
+	while(sel) {
+		resize(sel, True);
+		unmanage(sel);
+	}
+	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
+}
+
+void
+quit(Arg *arg)
+{
+	running = False;
+}
+
 static int
 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
 {
@@ -94,7 +110,7 @@ win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
 }
 
 int
-proto(Window w)
+getproto(Window w)
 {
 	unsigned char *protocols;
 	long res;
@@ -129,58 +145,42 @@ sendevent(Window w, Atom a, long value)
 }
 
 /*
- * There's no way to check accesses to destroyed windows, thus
- * those cases are ignored (especially on UnmapNotify's).
- * Other types of errors call Xlib's default error handler, which
- * calls exit().
- */
-int
-xerror(Display *dpy, XErrorEvent *error)
-{
-	if(error->error_code == BadWindow
-			|| (error->request_code == X_SetInputFocus
-				&& error->error_code == BadMatch)
-			|| (error->request_code == X_PolyText8
-				&& error->error_code == BadDrawable)
-			|| (error->request_code == X_PolyFillRectangle
-				&& error->error_code == BadDrawable)
-			|| (error->request_code == X_PolySegment
-				&& error->error_code == BadDrawable)
-			|| (error->request_code == X_ConfigureWindow
-				&& error->error_code == BadMatch)
-			|| (error->request_code == X_GrabKey
-				&& error->error_code == BadAccess))
-		return 0;
-	fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
-			error->request_code, error->error_code);
-	return x_xerror(dpy, error); /* may call exit() */
-}
-
-/*
  * Startup Error handler to check if another window manager
  * is already running.
  */
 static int
-startup_xerror(Display *dpy, XErrorEvent *error)
+xerrorstart(Display *dsply, XErrorEvent *ee)
 {
-	other_wm_running = True;
+	otherwm = True;
 	return -1;
 }
 
-static void
-cleanup()
-{
-	while(sel) {
-		resize(sel, True);
-		unmanage(sel);
-	}
-	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
-}
-
-void
-quit(Arg *arg)
+/*
+ * There's no way to check accesses to destroyed windows, thus
+ * those cases are ignored (especially on UnmapNotify's).
+ * Other types of errors call Xlib's default error handler, which
+ * calls exit().
+ */
+int
+xerror(Display *dpy, XErrorEvent *ee)
 {
-	running = False;
+	if(ee->error_code == BadWindow
+			|| (ee->request_code == X_SetInputFocus
+				&& ee->error_code == BadMatch)
+			|| (ee->request_code == X_PolyText8
+				&& ee->error_code == BadDrawable)
+			|| (ee->request_code == X_PolyFillRectangle
+				&& ee->error_code == BadDrawable)
+			|| (ee->request_code == X_PolySegment
+				&& ee->error_code == BadDrawable)
+			|| (ee->request_code == X_ConfigureWindow
+				&& ee->error_code == BadMatch)
+			|| (ee->request_code == X_GrabKey
+				&& ee->error_code == BadAccess))
+		return 0;
+	fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
+			ee->request_code, ee->error_code);
+	return xerrorxlib(dpy, ee); /* may call exit() */
 }
 
 int
@@ -208,23 +208,23 @@ main(int argc, char *argv[])
 
 	dpy = XOpenDisplay(0);
 	if(!dpy)
-		error("dwm: cannot connect X server\n");
+		eprint("dwm: cannot connect X server\n");
 
 	screen = DefaultScreen(dpy);
 	root = RootWindow(dpy, screen);
 
 	/* check if another WM is already running */
-	other_wm_running = False;
-	XSetErrorHandler(startup_xerror);
+	otherwm = False;
+	XSetErrorHandler(xerrorstart);
 	/* this causes an error if some other WM is running */
 	XSelectInput(dpy, root, SubstructureRedirectMask);
 	XFlush(dpy);
 
-	if(other_wm_running)
-		error("dwm: another window manager is already running\n");
+	if(otherwm)
+		eprint("dwm: another window manager is already running\n");
 
 	XSetErrorHandler(0);
-	x_xerror = XSetErrorHandler(xerror);
+	xerrorxlib = XSetErrorHandler(xerror);
 
 	/* init atoms */
 	wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
@@ -278,7 +278,7 @@ main(int argc, char *argv[])
 	XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
 
 	strcpy(stext, "dwm-"VERSION);
-	scan_wins();
+	scan();
 
 	/* main event loop, reads status text from stdin as well */
 Mainloop:
@@ -292,7 +292,7 @@ Mainloop:
 		if(i == -1 && errno == EINTR)
 			continue;
 		if(i < 0)
-			error("select failed\n");
+			eprint("select failed\n");
 		else if(i > 0) {
 			if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
 				while(XPending(dpy)) {
diff --git a/screen.c b/screen.c
deleted file mode 100644
index d3139552..00000000
--- a/screen.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-
-#include "dwm.h"
-
-void (*arrange)(Arg *) = tiling;
-
-void
-view(Arg *arg)
-{
-	Client *c;
-
-	tsel = arg->i;
-	arrange(NULL);
-
-	for(c = clients; c; c = getnext(c->next))
-		drawtitle(c);
-	drawstatus();
-}
-
-void
-floating(Arg *arg)
-{
-	Client *c;
-
-	arrange = floating;
-	for(c = clients; c; c = c->next) {
-		if(c->tags[tsel])
-			resize(c, True);
-		else
-			ban(c);
-	}
-	if(sel && !sel->tags[tsel]) {
-		if((sel = getnext(clients))) {
-			higher(sel);
-			focus(sel);
-		}
-	}
-	drawstatus();
-}
-
-void
-tiling(Arg *arg)
-{
-	Client *c;
-	int n, i, w, h;
-
-	w = sw - mw;
-	arrange = tiling;
-	for(n = 0, c = clients; c; c = c->next)
-		if(c->tags[tsel] && !c->floating)
-			n++;
-
-	if(n > 1)
-		h = (sh - bh) / (n - 1);
-	else
-		h = sh - bh;
-
-	for(i = 0, c = clients; c; c = c->next) {
-		if(c->tags[tsel]) {
-			if(c->floating) {
-				higher(c);
-				resize(c, True);
-				continue;
-			}
-			if(n == 1) {
-				c->x = sx;
-				c->y = sy + bh;
-				c->w = sw - 2 * c->border;
-				c->h = sh - 2 * c->border - bh;
-			}
-			else if(i == 0) {
-				c->x = sx;
-				c->y = sy + bh;
-				c->w = mw - 2 * c->border;
-				c->h = sh - 2 * c->border - bh;
-			}
-			else {
-				c->x = sx + mw;
-				c->y = sy + (i - 1) * h + bh;
-				c->w = w - 2 * c->border;
-				c->h = h - 2 * c->border;
-			}
-			resize(c, False);
-			i++;
-		}
-		else
-			ban(c);
-	}
-	if(!sel || (sel && !sel->tags[tsel])) {
-		if((sel = getnext(clients))) {
-			higher(sel);
-			focus(sel);
-		}
-	}
-	drawstatus();
-}
-
diff --git a/tag.c b/tag.c
new file mode 100644
index 00000000..0861128f
--- /dev/null
+++ b/tag.c
@@ -0,0 +1,171 @@
+/*
+ * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
+ * See LICENSE file for license details.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xatom.h>
+#include <X11/Xutil.h>
+
+#include "dwm.h"
+
+static Rule rule[] = {
+	/* class			instance	tags						dofloat */
+	{ "Firefox-bin",	"Gecko",	{ [Twww] = "www" },			False },
+};
+
+void (*arrange)(Arg *) = dotile;
+
+Client *
+getnext(Client *c)
+{
+	for(; c && !c->tags[tsel]; c = c->next);
+	return c;
+}
+
+void
+settags(Client *c)
+{
+	XClassHint ch;
+	static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
+	unsigned int i, j;
+	Bool matched = False;
+
+	if(!len) {
+		c->tags[tsel] = tags[tsel];
+		return;
+	}
+
+	if(XGetClassHint(dpy, c->win, &ch)) {
+		if(ch.res_class && ch.res_name) {
+			for(i = 0; i < len; i++)
+				if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
+					&& !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
+				{
+					for(j = 0; j < TLast; j++)
+						c->tags[j] = rule[i].tags[j];
+					c->dofloat = rule[i].dofloat;
+					matched = True;
+					break;
+				}
+		}
+		if(ch.res_class)
+			XFree(ch.res_class);
+		if(ch.res_name)
+			XFree(ch.res_name);
+	}
+
+	if(!matched)
+		c->tags[tsel] = tags[tsel];
+}
+
+void
+view(Arg *arg)
+{
+	tsel = arg->i;
+	arrange(NULL);
+	drawall();
+}
+
+void
+dofloat(Arg *arg)
+{
+	Client *c;
+
+	arrange = dofloat;
+	for(c = clients; c; c = c->next) {
+		if(c->tags[tsel])
+			resize(c, True);
+		else
+			ban(c);
+	}
+	if(sel && !sel->tags[tsel]) {
+		if((sel = getnext(clients))) {
+			higher(sel);
+			focus(sel);
+		}
+	}
+	drawall();
+}
+
+void
+dotile(Arg *arg)
+{
+	Client *c;
+	int n, i, w, h;
+
+	w = sw - mw;
+	arrange = dotile;
+	for(n = 0, c = clients; c; c = c->next)
+		if(c->tags[tsel] && !c->dofloat)
+			n++;
+
+	if(n > 1)
+		h = (sh - bh) / (n - 1);
+	else
+		h = sh - bh;
+
+	for(i = 0, c = clients; c; c = c->next) {
+		if(c->tags[tsel]) {
+			if(c->dofloat) {
+				higher(c);
+				resize(c, True);
+				continue;
+			}
+			if(n == 1) {
+				c->x = sx;
+				c->y = sy + bh;
+				c->w = sw - 2 * c->border;
+				c->h = sh - 2 * c->border - bh;
+			}
+			else if(i == 0) {
+				c->x = sx;
+				c->y = sy + bh;
+				c->w = mw - 2 * c->border;
+				c->h = sh - 2 * c->border - bh;
+			}
+			else {
+				c->x = sx + mw;
+				c->y = sy + (i - 1) * h + bh;
+				c->w = w - 2 * c->border;
+				c->h = h - 2 * c->border;
+			}
+			resize(c, False);
+			i++;
+		}
+		else
+			ban(c);
+	}
+	if(!sel || (sel && !sel->tags[tsel])) {
+		if((sel = getnext(clients))) {
+			higher(sel);
+			focus(sel);
+		}
+	}
+	drawall();
+}
+
+void
+appendtag(Arg *arg)
+{
+	if(!sel)
+		return;
+
+	sel->tags[arg->i] = tags[arg->i];
+	arrange(NULL);
+}
+
+void
+replacetag(Arg *arg)
+{
+	int i;
+	if(!sel)
+		return;
+
+	for(i = 0; i < TLast; i++)
+		sel->tags[i] = NULL;
+	appendtag(arg);
+}
+
diff --git a/util.c b/util.c
index eba84161..930b3749 100644
--- a/util.c
+++ b/util.c
@@ -13,7 +13,7 @@
 #include "dwm.h"
 
 void
-error(const char *errstr, ...) {
+eprint(const char *errstr, ...) {
 	va_list ap;
 	va_start(ap, errstr);
 	vfprintf(stderr, errstr, ap);