t* dwm + patches
       
   URI git clone git://git.codevoid.de/dwm-sdk
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
   DIR commit 47765f728614c348aa7dfc2eed6f754efc376922
   DIR parent 96d7fe16eaf6b656800f08da3156bacd75ca3b08
   URI Author: Anselm R. Garbe <garbeam@gmail.com>
       Date:   Sun, 19 Aug 2007 10:57:02 +0200
       
       added screen.c, removed layout.c and tag.c
       Diffstat:
         M Makefile                            |       2 +-
         M client.c                            |       8 ++++----
         M config.mk                           |       4 ++--
         M dwm.h                               |      35 ++++++++++++++-----------------
         D layout.c                            |     219 -------------------------------
         M main.c                              |       2 +-
         A screen.c                            |     383 +++++++++++++++++++++++++++++++
         D tag.c                               |     174 -------------------------------
       
       8 files changed, 407 insertions(+), 420 deletions(-)
       ---
   DIR diff --git a/Makefile b/Makefile
       t@@ -3,7 +3,7 @@
        
        include config.mk
        
       -SRC += client.c draw.c event.c layout.c main.c tag.c util.c
       +SRC += client.c draw.c event.c main.c screen.c util.c
        OBJ = ${SRC:.c=.o}
        
        all: options dwm
   DIR diff --git a/client.c b/client.c
       t@@ -182,7 +182,7 @@ killclient(const char *arg) {
        }
        
        Bool
       -loadprops(Client *c) {
       +getprops(Client *c) {
                unsigned int i;
                Bool result = False;
        
       t@@ -242,11 +242,11 @@ manage(Window w, XWindowAttributes *wa) {
                if(t)
                        for(i = 0; i < ntags; i++)
                                c->tags[i] = t->tags[i];
       -        if(!loadprops(c))
       +        if(!getprops(c))
                        applyrules(c);
                if(!c->isfloating)
                        c->isfloating = (rettrans == Success) || c->isfixed;
       -        saveprops(c);
       +        setprops(c);
                attach(c);
                attachstack(c);
                XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
       t@@ -318,7 +318,7 @@ resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
        }
        
        void
       -saveprops(Client *c) {
       +setprops(Client *c) {
                unsigned int i;
        
                for(i = 0; i < ntags && i < sizeof prop - 1; i++)
   DIR diff --git a/config.mk b/config.mk
       t@@ -20,8 +20,8 @@ LIBS = -L/usr/lib -lc -L${X11LIB} -lX11
        # flags
        CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\"
        LDFLAGS = -s ${LIBS}
       -CFLAGS = -g -Wall -O2 ${INCS} -DVERSION=\"${VERSION}\"
       -LDFLAGS = -g ${LIBS}
       +#CFLAGS = -g -Wall -O2 ${INCS} -DVERSION=\"${VERSION}\"
       +#LDFLAGS = -g ${LIBS}
        
        # Solaris
        #CFLAGS = -fast ${INCS} -DVERSION=\"${VERSION}\"
   DIR diff --git a/dwm.h b/dwm.h
       t@@ -96,11 +96,11 @@ void configure(Client *c);                /* send synthetic configure event */
        void detach(Client *c);                        /* detaches c from global client list */
        void focus(Client *c);                        /* focus c if visible && !NULL, or focus top visible */
        void killclient(const char *arg);        /* kill sel  nicely */
       -Bool loadprops(Client *c);                /* loads client properties */
       +Bool getprops(Client *c);                /* gets client properties */
        void manage(Window w, XWindowAttributes *wa);        /* manage new client */
        void resize(Client *c, int x, int y,
                        int w, int h, Bool sizehints);        /* resize with given coordinates c*/
       -void saveprops(Client *c);                /* saves client properties */
       +void setprops(Client *c);                /* sets client properties */
        void unban(Client *c);                        /* unbans c */
        void unmanage(Client *c, long state);        /* unmanage c */
        void updatesizehints(Client *c);        /* update the size hint variables of c */
       t@@ -114,22 +114,6 @@ unsigned int textw(const char *text);        /* return the width of text in px*/
        /* event.c */
        void grabkeys(void);                        /* grab all keys defined in config.h */
        
       -/* layout.c */
       -void arrange(void);                        /* arranges all windows depending on the layout in use */
       -void focusnext(const char *arg);        /* focuses next visible client */
       -void focusprev(const char *arg);        /* focuses prev visible client */
       -const char *getsymbol(void);                /* returns symbol of enabled layout */
       -Bool isfloating(void);                        /* returns True if floating layout is enabled */
       -Bool isarrange(void (*func)());                /* returns True if func is the layout function in use */
       -void initlayouts(void);                        /* initialize layout array */
       -void loaddwmprops(void);                /* loads dwm properties */
       -Client *nexttiled(Client *c);                /* returns tiled successor of c */
       -void restack(void);                        /* restores z layers of all clients */
       -void savedwmprops(void);                /* saves dwm properties */
       -void setlayout(const char *arg);        /* sets layout, NULL means next layout */
       -void togglebar(const char *arg);        /* shows/hides the bar */
       -void togglemax(const char *arg);        /* toggles maximization of floating client */
       -
        /* main.c */
        Bool gettextprop(Window w, Atom atom,
                        char *text, unsigned int size); /* return text property, UTF-8 compliant */
       t@@ -137,12 +121,25 @@ void updatebarpos(void);                /* updates the bar position */
        void quit(const char *arg);                /* quit dwm nicely */
        int xerror(Display *dsply, XErrorEvent *ee);        /* dwm's X error handler */
        
       -/* tag.c */
       +/* screen.c */
        void applyrules(Client *c);                /* applies rules to c */
       +void arrange(void);                        /* arranges all windows depending on the layout in use */
        void compileregs(void);                        /* initialize regexps of rules defined in config.h */
       +void focusnext(const char *arg);        /* focuses next visible client */
       +void focusprev(const char *arg);        /* focuses prev visible client */
       +const char *getsymbol(void);                /* returns symbol of enabled layout */
       +void initlayouts(void);                        /* initialize layout array */
       +Bool isarrange(void (*func)());                /* returns True if func is the layout function in use */
       +Bool isfloating(void);                        /* returns True if floating layout is enabled */
        Bool isvisible(Client *c);                /* returns True if client is visible */
       +void getdwmprops(void);                        /* gets dwm properties */
       +Client *nexttiled(Client *c);                /* returns tiled successor of c */
       +void restack(void);                        /* restores z layers of all clients */
       +void setlayout(const char *arg);        /* sets layout, NULL means next layout */
        void tag(const char *arg);                /* tags sel with arg's index */
       +void togglebar(const char *arg);        /* shows/hides the bar */
        void togglefloating(const char *arg);        /* toggles sel between floating/tiled state */
       +void togglemax(const char *arg);        /* toggles maximization of floating client */
        void toggletag(const char *arg);        /* toggles sel tags with arg's index */
        void toggleview(const char *arg);        /* toggles the tag with arg's index (in)visible */
        void view(const char *arg);                /* views the tag with arg's index */
   DIR diff --git a/layout.c b/layout.c
       t@@ -1,219 +0,0 @@
       -/* See LICENSE file for copyright and license details. */
       -#include "dwm.h"
       -#include <stdlib.h>
       -#include <string.h>
       -#include <X11/Xatom.h>
       -#include <X11/Xutil.h>
       -
       -/* static */
       -
       -typedef struct {
       -        const char *symbol;
       -        void (*arrange)(void);
       -} Layout;
       -
       -unsigned int blw = 0;
       -static char prop[128];
       -static unsigned int ltidx = 0; /* default */
       -
       -static void
       -floating(void) { /* default floating layout */
       -        Client *c;
       -
       -        for(c = clients; c; c = c->next)
       -                if(isvisible(c))
       -                        resize(c, c->x, c->y, c->w, c->h, True);
       -}
       -
       -static unsigned int nlayouts = 0;
       -
       -LAYOUTS
       -
       -/* extern */
       -
       -void
       -arrange(void) {
       -        Client *c;
       -
       -        for(c = clients; c; c = c->next)
       -                if(isvisible(c))
       -                        unban(c);
       -                else
       -                        ban(c);
       -        layouts[ltidx].arrange();
       -        focus(NULL);
       -        restack();
       -}
       -
       -void
       -focusnext(const char *arg) {
       -        Client *c;
       -
       -        if(!sel)
       -                return;
       -        for(c = sel->next; c && !isvisible(c); c = c->next);
       -        if(!c)
       -                for(c = clients; c && !isvisible(c); c = c->next);
       -        if(c) {
       -                focus(c);
       -                restack();
       -        }
       -}
       -
       -void
       -focusprev(const char *arg) {
       -        Client *c;
       -
       -        if(!sel)
       -                return;
       -        for(c = sel->prev; c && !isvisible(c); c = c->prev);
       -        if(!c) {
       -                for(c = clients; c && c->next; c = c->next);
       -                for(; c && !isvisible(c); c = c->prev);
       -        }
       -        if(c) {
       -                focus(c);
       -                restack();
       -        }
       -}
       -
       -const char *
       -getsymbol(void)
       -{
       -        return layouts[ltidx].symbol;
       -}
       -
       -Bool
       -isfloating(void) {
       -        return layouts[ltidx].arrange == floating;
       -}
       -
       -Bool
       -isarrange(void (*func)())
       -{
       -        return func == layouts[ltidx].arrange;
       -}
       -
       -void
       -initlayouts(void) {
       -        unsigned int i, w;
       -
       -        nlayouts = sizeof layouts / sizeof layouts[0];
       -        for(blw = i = 0; i < nlayouts; i++) {
       -                w = textw(layouts[i].symbol);
       -                if(w > blw)
       -                        blw = w;
       -        }
       -}
       -
       -void
       -loaddwmprops(void) {
       -        unsigned int i;
       -
       -        if(gettextprop(root, dwmprops, prop, sizeof prop)) {
       -                for(i = 0; i < ntags && i < sizeof prop - 1 && prop[i] != '\0'; i++)
       -                        seltags[i] = prop[i] == '1';
       -                if(i < sizeof prop - 1 && prop[i] != '\0') {
       -                        if(prop[i] < nlayouts)
       -                                ltidx = prop[i];
       -                }
       -        }
       -}
       -
       -Client *
       -nexttiled(Client *c) {
       -        for(; c && (c->isfloating || !isvisible(c)); c = c->next);
       -        return c;
       -}
       -
       -void
       -restack(void) {
       -        Client *c;
       -        XEvent ev;
       -        XWindowChanges wc;
       -
       -        drawstatus();
       -        if(!sel)
       -                return;
       -        if(sel->isfloating || isfloating())
       -                XRaiseWindow(dpy, sel->win);
       -        if(!isfloating()) {
       -                wc.stack_mode = Below;
       -                wc.sibling = barwin;
       -                if(!sel->isfloating) {
       -                        XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
       -                        wc.sibling = sel->win;
       -                }
       -                for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
       -                        if(c == sel)
       -                                continue;
       -                        XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
       -                        wc.sibling = c->win;
       -                }
       -        }
       -        XSync(dpy, False);
       -        while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
       -}
       -
       -void
       -savedwmprops(void) {
       -        unsigned int i;
       -
       -        for(i = 0; i < ntags && i < sizeof prop - 1; i++)
       -                prop[i] = seltags[i] ? '1' : '0';
       -        if(i < sizeof prop - 1)
       -                prop[i++] = (char)ltidx;
       -        prop[i] = '\0';
       -        XChangeProperty(dpy, root, dwmprops, XA_STRING, 8,
       -                        PropModeReplace, (unsigned char *)prop, i);
       -}
       -
       -void
       -setlayout(const char *arg) {
       -        int i;
       -
       -        if(!arg) {
       -                if(++ltidx == nlayouts)
       -                        ltidx = 0;;
       -        }
       -        else {
       -                i = atoi(arg);
       -                if(i < 0 || i >= nlayouts)
       -                        return;
       -                ltidx = i;
       -        }
       -        if(sel)
       -                arrange();
       -        else
       -                drawstatus();
       -        savedwmprops();
       -}
       -
       -void
       -togglebar(const char *arg) {
       -        if(bpos == BarOff)
       -                bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
       -        else
       -                bpos = BarOff;
       -        updatebarpos();
       -        arrange();
       -}
       -
       -void
       -togglemax(const char *arg) {
       -        XEvent ev;
       -
       -        if(!sel || (!isfloating() && !sel->isfloating) || sel->isfixed)
       -                return;
       -        if((sel->ismax = !sel->ismax)) {
       -                sel->rx = sel->x;
       -                sel->ry = sel->y;
       -                sel->rw = sel->w;
       -                sel->rh = sel->h;
       -                resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
       -        }
       -        else
       -                resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
       -        drawstatus();
       -        while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
       -}
   DIR diff --git a/main.c b/main.c
       t@@ -206,7 +206,7 @@ setup(void) {
                        XSetFont(dpy, dc.gc, dc.font.xfont->fid);
                /* multihead support */
                selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
       -        loaddwmprops();
       +        getdwmprops();
        }
        
        /*
   DIR diff --git a/screen.c b/screen.c
       t@@ -0,0 +1,383 @@
       +/* See LICENSE file for copyright and license details. */
       +#include "dwm.h"
       +#include <regex.h>
       +#include <stdio.h>
       +#include <stdlib.h>
       +#include <string.h>
       +#include <X11/Xatom.h>
       +#include <X11/Xutil.h>
       +
       +/* static */
       +
       +typedef struct {
       +        const char *symbol;
       +        void (*arrange)(void);
       +} Layout;
       +
       +typedef struct {
       +        const char *prop;
       +        const char *tags;
       +        Bool isfloating;
       +} Rule;
       +
       +typedef struct {
       +        regex_t *propregex;
       +        regex_t *tagregex;
       +} Regs;
       +
       +TAGS
       +RULES
       +
       +static char prop[512];
       +static unsigned int nrules = 0;
       +static unsigned int nlayouts = 0;
       +static unsigned int ltidx = 0; /* default */
       +static Regs *regs = NULL;
       +
       +static unsigned int
       +idxoftag(const char *tag) {
       +        unsigned int i;
       +
       +        for(i = 0; i < ntags; i++)
       +                if(tags[i] == tag)
       +                        return i;
       +        return 0;
       +}
       +
       +static void
       +floating(void) { /* default floating layout */
       +        Client *c;
       +
       +        for(c = clients; c; c = c->next)
       +                if(isvisible(c))
       +                        resize(c, c->x, c->y, c->w, c->h, True);
       +}
       +
       +static void
       +setdwmprops(void) {
       +        unsigned int i;
       +
       +        for(i = 0; i < ntags && i < sizeof prop - 1; i++)
       +                prop[i] = seltags[i] ? '1' : '0';
       +        if(i < sizeof prop - 1)
       +                prop[i++] = (char)ltidx;
       +        prop[i] = '\0';
       +        XChangeProperty(dpy, root, dwmprops, XA_STRING, 8,
       +                        PropModeReplace, (unsigned char *)prop, i);
       +}
       +
       +LAYOUTS
       +
       +/* extern */
       +
       +unsigned int blw = 0;
       +
       +void
       +applyrules(Client *c) {
       +        unsigned int i, j;
       +        regmatch_t tmp;
       +        Bool matched = False;
       +        XClassHint ch = { 0 };
       +
       +        /* rule matching */
       +        XGetClassHint(dpy, c->win, &ch);
       +        snprintf(prop, sizeof prop, "%s:%s:%s",
       +                        ch.res_class ? ch.res_class : "",
       +                        ch.res_name ? ch.res_name : "", c->name);
       +        for(i = 0; i < nrules; i++)
       +                if(regs[i].propregex && !regexec(regs[i].propregex, prop, 1, &tmp, 0)) {
       +                        c->isfloating = rules[i].isfloating;
       +                        for(j = 0; regs[i].tagregex && j < ntags; j++) {
       +                                if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
       +                                        matched = True;
       +                                        c->tags[j] = True;
       +                                }
       +                        }
       +                }
       +        if(ch.res_class)
       +                XFree(ch.res_class);
       +        if(ch.res_name)
       +                XFree(ch.res_name);
       +        if(!matched)
       +                for(i = 0; i < ntags; i++)
       +                        c->tags[i] = seltags[i];
       +}
       +
       +void
       +arrange(void) {
       +        Client *c;
       +
       +        for(c = clients; c; c = c->next)
       +                if(isvisible(c))
       +                        unban(c);
       +                else
       +                        ban(c);
       +        layouts[ltidx].arrange();
       +        focus(NULL);
       +        restack();
       +}
       +
       +void
       +compileregs(void) {
       +        unsigned int i;
       +        regex_t *reg;
       +
       +        if(regs)
       +                return;
       +        nrules = sizeof rules / sizeof rules[0];
       +        regs = emallocz(nrules * sizeof(Regs));
       +        for(i = 0; i < nrules; i++) {
       +                if(rules[i].prop) {
       +                        reg = emallocz(sizeof(regex_t));
       +                        if(regcomp(reg, rules[i].prop, REG_EXTENDED))
       +                                free(reg);
       +                        else
       +                                regs[i].propregex = reg;
       +                }
       +                if(rules[i].tags) {
       +                        reg = emallocz(sizeof(regex_t));
       +                        if(regcomp(reg, rules[i].tags, REG_EXTENDED))
       +                                free(reg);
       +                        else
       +                                regs[i].tagregex = reg;
       +                }
       +        }
       +}
       +
       +void
       +focusnext(const char *arg) {
       +        Client *c;
       +
       +        if(!sel)
       +                return;
       +        for(c = sel->next; c && !isvisible(c); c = c->next);
       +        if(!c)
       +                for(c = clients; c && !isvisible(c); c = c->next);
       +        if(c) {
       +                focus(c);
       +                restack();
       +        }
       +}
       +
       +void
       +focusprev(const char *arg) {
       +        Client *c;
       +
       +        if(!sel)
       +                return;
       +        for(c = sel->prev; c && !isvisible(c); c = c->prev);
       +        if(!c) {
       +                for(c = clients; c && c->next; c = c->next);
       +                for(; c && !isvisible(c); c = c->prev);
       +        }
       +        if(c) {
       +                focus(c);
       +                restack();
       +        }
       +}
       +
       +const char *
       +getsymbol(void)
       +{
       +        return layouts[ltidx].symbol;
       +}
       +
       +void
       +initlayouts(void) {
       +        unsigned int i, w;
       +
       +        nlayouts = sizeof layouts / sizeof layouts[0];
       +        for(blw = i = 0; i < nlayouts; i++) {
       +                w = textw(layouts[i].symbol);
       +                if(w > blw)
       +                        blw = w;
       +        }
       +}
       +
       +Bool
       +isfloating(void) {
       +        return layouts[ltidx].arrange == floating;
       +}
       +
       +Bool
       +isarrange(void (*func)())
       +{
       +        return func == layouts[ltidx].arrange;
       +}
       +
       +Bool
       +isvisible(Client *c) {
       +        unsigned int i;
       +
       +        for(i = 0; i < ntags; i++)
       +                if(c->tags[i] && seltags[i])
       +                        return True;
       +        return False;
       +}
       +
       +void
       +getdwmprops(void) {
       +        unsigned int i;
       +
       +        if(gettextprop(root, dwmprops, prop, sizeof prop)) {
       +                for(i = 0; i < ntags && i < sizeof prop - 1 && prop[i] != '\0'; i++)
       +                        seltags[i] = prop[i] == '1';
       +                if(i < sizeof prop - 1 && prop[i] != '\0') {
       +                        if(prop[i] < nlayouts)
       +                                ltidx = prop[i];
       +                }
       +        }
       +}
       +
       +Client *
       +nexttiled(Client *c) {
       +        for(; c && (c->isfloating || !isvisible(c)); c = c->next);
       +        return c;
       +}
       +
       +void
       +restack(void) {
       +        Client *c;
       +        XEvent ev;
       +        XWindowChanges wc;
       +
       +        drawstatus();
       +        if(!sel)
       +                return;
       +        if(sel->isfloating || isfloating())
       +                XRaiseWindow(dpy, sel->win);
       +        if(!isfloating()) {
       +                wc.stack_mode = Below;
       +                wc.sibling = barwin;
       +                if(!sel->isfloating) {
       +                        XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
       +                        wc.sibling = sel->win;
       +                }
       +                for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
       +                        if(c == sel)
       +                                continue;
       +                        XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
       +                        wc.sibling = c->win;
       +                }
       +        }
       +        XSync(dpy, False);
       +        while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
       +}
       +
       +void
       +setlayout(const char *arg) {
       +        int i;
       +
       +        if(!arg) {
       +                if(++ltidx == nlayouts)
       +                        ltidx = 0;;
       +        }
       +        else {
       +                i = atoi(arg);
       +                if(i < 0 || i >= nlayouts)
       +                        return;
       +                ltidx = i;
       +        }
       +        if(sel)
       +                arrange();
       +        else
       +                drawstatus();
       +        setdwmprops();
       +}
       +
       +void
       +tag(const char *arg) {
       +        unsigned int i;
       +
       +        if(!sel)
       +                return;
       +        for(i = 0; i < ntags; i++)
       +                sel->tags[i] = arg == NULL;
       +        i = idxoftag(arg);
       +        if(i >= 0 && i < ntags)
       +                sel->tags[i] = True;
       +        setprops(sel);
       +        arrange();
       +}
       +
       +void
       +togglebar(const char *arg) {
       +        if(bpos == BarOff)
       +                bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
       +        else
       +                bpos = BarOff;
       +        updatebarpos();
       +        arrange();
       +}
       +
       +void
       +togglefloating(const char *arg) {
       +        if(!sel || isfloating())
       +                return;
       +        sel->isfloating = !sel->isfloating;
       +        if(sel->isfloating) {
       +                resize(sel, sel->x, sel->y, sel->w, sel->h, True);
       +                setprops(sel);
       +        }
       +        arrange();
       +}
       +
       +void
       +togglemax(const char *arg) {
       +        XEvent ev;
       +
       +        if(!sel || (!isfloating() && !sel->isfloating) || sel->isfixed)
       +                return;
       +        if((sel->ismax = !sel->ismax)) {
       +                sel->rx = sel->x;
       +                sel->ry = sel->y;
       +                sel->rw = sel->w;
       +                sel->rh = sel->h;
       +                resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
       +        }
       +        else
       +                resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
       +        drawstatus();
       +        while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
       +}
       +
       +void
       +toggletag(const char *arg) {
       +        unsigned int i, j;
       +
       +        if(!sel)
       +                return;
       +        i = idxoftag(arg);
       +        sel->tags[i] = !sel->tags[i];
       +        for(j = 0; j < ntags && !sel->tags[j]; j++);
       +        if(j == ntags)
       +                sel->tags[i] = True;
       +        setprops(sel);
       +        arrange();
       +}
       +
       +void
       +toggleview(const char *arg) {
       +        unsigned int i, j;
       +
       +        i = idxoftag(arg);
       +        seltags[i] = !seltags[i];
       +        for(j = 0; j < ntags && !seltags[j]; j++);
       +        if(j == ntags)
       +                seltags[i] = True; /* cannot toggle last view */
       +        setdwmprops();
       +        arrange();
       +}
       +
       +void
       +view(const char *arg) {
       +        unsigned int i;
       +
       +        for(i = 0; i < ntags; i++)
       +                seltags[i] = arg == NULL;
       +        i = idxoftag(arg);
       +        if(i >= 0 && i < ntags)
       +                seltags[i] = True;
       +        setdwmprops();
       +        arrange();
       +}
   DIR diff --git a/tag.c b/tag.c
       t@@ -1,174 +0,0 @@
       -/* See LICENSE file for copyright and license details. */
       -#include "dwm.h"
       -#include <regex.h>
       -#include <stdio.h>
       -#include <stdlib.h>
       -#include <X11/Xutil.h>
       -
       -/* static */
       -
       -typedef struct {
       -        const char *prop;
       -        const char *tags;
       -        Bool isfloating;
       -} Rule;
       -
       -typedef struct {
       -        regex_t *propregex;
       -        regex_t *tagregex;
       -} Regs;
       -
       -TAGS
       -RULES
       -
       -static Regs *regs = NULL;
       -static unsigned int nrules = 0;
       -static char prop[512];
       -
       -static unsigned int
       -idxoftag(const char *tag) {
       -        unsigned int i;
       -
       -        for(i = 0; i < ntags; i++)
       -                if(tags[i] == tag)
       -                        return i;
       -        return 0;
       -}
       -
       -/* extern */
       -
       -void
       -applyrules(Client *c) {
       -        unsigned int i, j;
       -        regmatch_t tmp;
       -        Bool matched = False;
       -        XClassHint ch = { 0 };
       -
       -        /* rule matching */
       -        XGetClassHint(dpy, c->win, &ch);
       -        snprintf(prop, sizeof prop, "%s:%s:%s",
       -                        ch.res_class ? ch.res_class : "",
       -                        ch.res_name ? ch.res_name : "", c->name);
       -        for(i = 0; i < nrules; i++)
       -                if(regs[i].propregex && !regexec(regs[i].propregex, prop, 1, &tmp, 0)) {
       -                        c->isfloating = rules[i].isfloating;
       -                        for(j = 0; regs[i].tagregex && j < ntags; j++) {
       -                                if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
       -                                        matched = True;
       -                                        c->tags[j] = True;
       -                                }
       -                        }
       -                }
       -        if(ch.res_class)
       -                XFree(ch.res_class);
       -        if(ch.res_name)
       -                XFree(ch.res_name);
       -        if(!matched)
       -                for(i = 0; i < ntags; i++)
       -                        c->tags[i] = seltags[i];
       -}
       -
       -void
       -compileregs(void) {
       -        unsigned int i;
       -        regex_t *reg;
       -
       -        if(regs)
       -                return;
       -        nrules = sizeof rules / sizeof rules[0];
       -        regs = emallocz(nrules * sizeof(Regs));
       -        for(i = 0; i < nrules; i++) {
       -                if(rules[i].prop) {
       -                        reg = emallocz(sizeof(regex_t));
       -                        if(regcomp(reg, rules[i].prop, REG_EXTENDED))
       -                                free(reg);
       -                        else
       -                                regs[i].propregex = reg;
       -                }
       -                if(rules[i].tags) {
       -                        reg = emallocz(sizeof(regex_t));
       -                        if(regcomp(reg, rules[i].tags, REG_EXTENDED))
       -                                free(reg);
       -                        else
       -                                regs[i].tagregex = reg;
       -                }
       -        }
       -}
       -
       -Bool
       -isvisible(Client *c) {
       -        unsigned int i;
       -
       -        for(i = 0; i < ntags; i++)
       -                if(c->tags[i] && seltags[i])
       -                        return True;
       -        return False;
       -}
       -
       -void
       -tag(const char *arg) {
       -        unsigned int i;
       -
       -        if(!sel)
       -                return;
       -        for(i = 0; i < ntags; i++)
       -                sel->tags[i] = arg == NULL;
       -        i = idxoftag(arg);
       -        if(i >= 0 && i < ntags)
       -                sel->tags[i] = True;
       -        saveprops(sel);
       -        arrange();
       -}
       -
       -void
       -togglefloating(const char *arg) {
       -        if(!sel || isfloating())
       -                return;
       -        sel->isfloating = !sel->isfloating;
       -        if(sel->isfloating) {
       -                resize(sel, sel->x, sel->y, sel->w, sel->h, True);
       -                saveprops(sel);
       -        }
       -        arrange();
       -}
       -
       -void
       -toggletag(const char *arg) {
       -        unsigned int i, j;
       -
       -        if(!sel)
       -                return;
       -        i = idxoftag(arg);
       -        sel->tags[i] = !sel->tags[i];
       -        for(j = 0; j < ntags && !sel->tags[j]; j++);
       -        if(j == ntags)
       -                sel->tags[i] = True;
       -        saveprops(sel);
       -        arrange();
       -}
       -
       -void
       -toggleview(const char *arg) {
       -        unsigned int i, j;
       -
       -        i = idxoftag(arg);
       -        seltags[i] = !seltags[i];
       -        for(j = 0; j < ntags && !seltags[j]; j++);
       -        if(j == ntags)
       -                seltags[i] = True; /* cannot toggle last view */
       -        savedwmprops();
       -        arrange();
       -}
       -
       -void
       -view(const char *arg) {
       -        unsigned int i;
       -
       -        for(i = 0; i < ntags; i++)
       -                seltags[i] = arg == NULL;
       -        i = idxoftag(arg);
       -        if(i >= 0 && i < ntags)
       -                seltags[i] = True;
       -        savedwmprops();
       -        arrange();
       -}