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<a href='https://github.com/akkartik/mu/blob/main/linux/105string-equal.subx'>https://github.com/akkartik/mu/blob/main/linux/105string-equal.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr">  1 </span><span class="subxComment"># Comparing 'regular' size-prefixed strings.</span>
<span id="L2" class="LineNr">  2 </span>
<span id="L3" class="LineNr">  3 </span>== code
<span id="L4" class="LineNr">  4 </span><span class="subxComment">#   instruction                     effective address                                                   register    displacement    immediate</span>
<span id="L5" class="LineNr">  5 </span><span class="subxS1Comment"># . op          subop               mod             rm32          base        index         scale       r32</span>
<span id="L6" class="LineNr">  6 </span><span class="subxS1Comment"># . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes</span>
<span id="L7" class="LineNr">  7 </span>
<span id="L8" class="LineNr">  8 </span><span class="SpecialChar">Entry</span>:  <span class="subxComment"># run all tests</span>
<span id="L9" class="LineNr">  9 </span><span class="CommentedCode">#?     e8/call test-compare-equal-strings/disp32</span>
<span id="L10" class="LineNr"> 10 </span>    e8/call  run-tests/disp32  <span class="subxComment"># 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'.</span>
<span id="L11" class="LineNr"> 11 </span>    <span class="subxComment"># syscall(exit, Num-test-failures)</span>
<span id="L12" class="LineNr"> 12 </span>    8b/copy                         0/mod/indirect  5/rm32/.disp32           <span class="Normal"> . </span>           <span class="Normal"> . </span>          3/r32/ebx   <span class="SpecialChar"><a href='102test.subx.html#L89'>Num-test-failures</a></span>/disp32          <span class="subxComment"># copy *Num-test-failures to ebx</span>
<span id="L13" class="LineNr"> 13 </span>    e8/call  <a href='000init.subx.html#L18'>syscall_exit</a>/disp32
<span id="L14" class="LineNr"> 14 </span>
<span id="L15" class="LineNr"> 15 </span><span class="subxFunction">string-equal?</span>:  <span class="subxComment"># s: (addr array byte), benchmark: (addr array byte) -&gt; result/eax: boolean</span>
<span id="L16" class="LineNr"> 16 </span>    <span class="subxComment"># pseudocode:</span>
<span id="L17" class="LineNr"> 17 </span>    <span class="subxComment">#   if (s-&gt;size != benchmark-&gt;size) return false</span>
<span id="L18" class="LineNr"> 18 </span>    <span class="subxComment">#   return string-starts-with?(s, benchmark)</span>
<span id="L19" class="LineNr"> 19 </span>    <span class="subxComment">#</span>
<span id="L20" class="LineNr"> 20 </span>    <span class="subxS1Comment"># . prologue</span>
<span id="L21" class="LineNr"> 21 </span>    55/push-ebp
<span id="L22" class="LineNr"> 22 </span>    89/copy                         3/mod/direct    5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/esp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy esp to ebp</span>
<span id="L23" class="LineNr"> 23 </span>    <span class="subxS1Comment"># . save registers</span>
<span id="L24" class="LineNr"> 24 </span>    51/push-ecx
<span id="L25" class="LineNr"> 25 </span>    56/push-esi
<span id="L26" class="LineNr"> 26 </span>    57/push-edi
<span id="L27" class="LineNr"> 27 </span>    <span class="subxComment"># esi = s</span>
<span id="L28" class="LineNr"> 28 </span>    8b/copy                         1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          6/r32/esi   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(ebp+8) to esi</span>
<span id="L29" class="LineNr"> 29 </span>    <span class="subxComment"># edi = benchmark</span>
<span id="L30" class="LineNr"> 30 </span>    8b/copy                         1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          7/r32/edi   0xc/disp8      <span class="Normal"> . </span>                <span class="subxComment"># copy *(ebp+12) to edi</span>
<span id="L31" class="LineNr"> 31 </span>    <span class="subxComment"># ecx = s-&gt;size</span>
<span id="L32" class="LineNr"> 32 </span>    8b/copy                         0/mod/indirect  6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy *esi to ecx</span>
<span id="L33" class="LineNr"> 33 </span><span class="Constant">$string-equal?:sizes</span>:
<span id="L34" class="LineNr"> 34 </span>    <span class="subxComment"># if (ecx != benchmark-&gt;size) return false</span>
<span id="L35" class="LineNr"> 35 </span>    39/compare                      0/mod/indirect  7/rm32/edi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># compare *edi and ecx</span>
<span id="L36" class="LineNr"> 36 </span>    b8/copy-to-eax  0/imm32/false
<span id="L37" class="LineNr"> 37 </span>    75/jump-if-!=  $string-equal?:end/disp8
<span id="L38" class="LineNr"> 38 </span><span class="Constant">$string-equal?:contents</span>:
<span id="L39" class="LineNr"> 39 </span>    <span class="subxComment"># string-starts-with?(s, benchmark)</span>
<span id="L40" class="LineNr"> 40 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L41" class="LineNr"> 41 </span>    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          0xc/disp8      <span class="Normal"> . </span>                <span class="subxComment"># push *(ebp+12)</span>
<span id="L42" class="LineNr"> 42 </span>    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># push *(ebp+8)</span>
<span id="L43" class="LineNr"> 43 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L44" class="LineNr"> 44 </span>    e8/call  <a href='105string-equal.subx.html#L57'>string-starts-with?</a>/disp32
<span id="L45" class="LineNr"> 45 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L46" class="LineNr"> 46 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L47" class="LineNr"> 47 </span><span class="Constant">$string-equal?:end</span>:
<span id="L48" class="LineNr"> 48 </span>    <span class="subxS1Comment"># . restore registers</span>
<span id="L49" class="LineNr"> 49 </span>    5f/pop-to-edi
<span id="L50" class="LineNr"> 50 </span>    5e/pop-to-esi
<span id="L51" class="LineNr"> 51 </span>    59/pop-to-ecx
<span id="L52" class="LineNr"> 52 </span>    <span class="subxS1Comment"># . epilogue</span>
<span id="L53" class="LineNr"> 53 </span>    89/copy                         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          5/r32/ebp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy ebp to esp</span>
<span id="L54" class="LineNr"> 54 </span>    5d/pop-to-ebp
<span id="L55" class="LineNr"> 55 </span>    c3/return
<span id="L56" class="LineNr"> 56 </span>
<span id="L57" class="LineNr"> 57 </span><span class="subxFunction">string-starts-with?</span>:  <span class="subxComment"># s: (addr array byte), benchmark: (addr array byte) -&gt; result/eax: boolean</span>
<span id="L58" class="LineNr"> 58 </span>    <span class="subxComment"># pseudocode:</span>
<span id="L59" class="LineNr"> 59 </span>    <span class="subxComment">#   if (s-&gt;size &lt; benchmark-&gt;size) return false</span>
<span id="L60" class="LineNr"> 60 </span>    <span class="subxComment">#   currs = s-&gt;data</span>
<span id="L61" class="LineNr"> 61 </span>    <span class="subxComment">#   currb = benchmark-&gt;data</span>
<span id="L62" class="LineNr"> 62 </span>    <span class="subxComment">#   maxb = &amp;benchmark-&gt;data[benchmark-&gt;size]</span>
<span id="L63" class="LineNr"> 63 </span>    <span class="subxComment">#   while currb &lt; maxb</span>
<span id="L64" class="LineNr"> 64 </span>    <span class="subxComment">#     c1 = *currs</span>
<span id="L65" class="LineNr"> 65 </span>    <span class="subxComment">#     c2 = *currb</span>
<span id="L66" class="LineNr"> 66 </span>    <span class="subxComment">#     if (c1 != c2) return false</span>
<span id="L67" class="LineNr"> 67 </span>    <span class="subxComment">#     ++currs, ++currb</span>
<span id="L68" class="LineNr"> 68 </span>    <span class="subxComment">#   return true</span>
<span id="L69" class="LineNr"> 69 </span>    <span class="subxComment">#</span>
<span id="L70" class="LineNr"> 70 </span>    <span class="subxComment"># registers:</span>
<span id="L71" class="LineNr"> 71 </span>    <span class="subxComment">#   currs: esi</span>
<span id="L72" class="LineNr"> 72 </span>    <span class="subxComment">#   maxs: ecx</span>
<span id="L73" class="LineNr"> 73 </span>    <span class="subxComment">#   currb: edi</span>
<span id="L74" class="LineNr"> 74 </span>    <span class="subxComment">#   c1: eax</span>
<span id="L75" class="LineNr"> 75 </span>    <span class="subxComment">#   c2: ebx</span>
<span id="L76" class="LineNr"> 76 </span>    <span class="subxComment">#</span>
<span id="L77" class="LineNr"> 77 </span>    <span class="subxS1Comment"># . prologue</span>
<span id="L78" class="LineNr"> 78 </span>    55/push-ebp
<span id="L79" class="LineNr"> 79 </span>    89/copy                         3/mod/direct    5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/esp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy esp to ebp</span>
<span id="L80" class="LineNr"> 80 </span>    <span class="subxS1Comment"># . save registers</span>
<span id="L81" class="LineNr"> 81 </span>    51/push-ecx
<span id="L82" class="LineNr"> 82 </span>    52/push-edx
<span id="L83" class="LineNr"> 83 </span>    56/push-esi
<span id="L84" class="LineNr"> 84 </pre { line-height: 125%; }
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.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long *//* 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 */

static void
attachstack(Client *c) {
	c->snext = stack;
	stack = c;
}

static void
detachstack(Client *c) {
	Client **tc;

	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
	*tc = c->snext;
}

static void
grabbuttons(Client *c, Bool focused) {
	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);

	if(focused) {
		XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);

		XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);

		XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
	}
	else
		XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
}

static Bool
isprotodel(Client *c) {
	int i, n;
	Atom *protocols;
	Bool ret = False;

	if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
		for(i = 0; !ret && i < n; i++)
			if(protocols[i] == wmatom[WMDelete])
				ret = True;
		XFree(protocols);
	}
	return ret;
}

static void
setclientstate(Client *c, long state) {
	long data[] = {state, None};

	XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
			PropModeReplace, (unsigned char *)data, 2);
}

static int
xerrordummy(Display *dsply, XErrorEvent *ee) {
	return 0;
}

/* extern */

void
attach(Client *c) {
	if(clients)
		clients->prev = c;
	c->next = clients;
	clients = c;
}

void
ban(Client *c) {
	if (c->isbanned)
		return;
	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
	c->isbanned = True;
}

void
configure(Client *c) {
	XConfigureEvent ce;

	ce.type = ConfigureNotify;
	ce.display = dpy;
	ce.event = c->win;
	ce.window = c->win;
	ce.x = c->x;
	ce.y = c->y;
	ce.width = c->w;
	ce.height = c->h;
	ce.border_width = c->border;
	ce.above = None;
	ce.override_redirect = False;
	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
}

void
detach(Client *c) {
	if(c->prev)
		c->prev->next = c->next;
	if(c->next)
		c->next->prev = c->prev;
	if(c == clients)
		clients = c->next;
	c->next = c->prev = NULL;
}

void
focus(Client *c) {
	if((!c && selscreen)|| (c && !isvisible(c)))
		for(c = stack; c && !isvisible(c); c = c->snext);
	if(sel && sel != c) {
		grabbuttons(sel, False);
		XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
	}
	if(c) {
		detachstack(c);
		attachstack(c);
		grabbuttons(c, True);
	}
	sel = c;
	drawstatus();
	if(!selscreen)
		return;
	if(c) {
		XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
	}
	else
		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
}

void
killclient(const char *arg) {
	XEvent ev;

	if(!sel)
		return;
	if(isprotodel(sel)) {
		ev.type = ClientMessage;
		ev.xclient.window = sel->win;
		ev.xclient.message_type = wmatom[WMProtocols];
		ev.xclient.format = 32;
		ev.xclient.data.l[0] = wmatom[WMDelete];
		ev.xclient.data.l[1] = CurrentTime;
		XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
	}
	else
		XKillClient(dpy, sel->win);
}

void
manage(Window w, XWindowAttributes *wa) {
	Client *c, *t = NULL;
	Window trans;
	Status rettrans;
	XWindowChanges wc;

	c = emallocz(sizeof(Client));
	c->tags = emallocz(ntags * sizeof(Bool));
	c->win = w;
	c->x = wa->x;
	c->y = wa->y;
	c->w = wa->width;
	c->h = wa->height;
	c->oldborder = wa->border_width;
	if(c->w == sw && c->h == sh) {
		c->x = sx;
		c->y = sy;
		c->border = wa->border_width;
	}
	else {
		if(c->x + c->w + 2 * c->border > wax + waw)
			c->x = wax + waw - c->w - 2 * c->border;
		if(c->y + c->h + 2 * c->border > way + wah)
			c->y = way + wah - c->h - 2 * c->border;
		if(c->x < wax)
			c->x = wax;
		if(c->y < way)
			c->y = way;
		c->border = BORDERPX;
	}
	wc.border_width = c->border;
	XConfigureWindow(dpy, w, CWBorderWidth, &wc);
	XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
	configure(c); /* propagates border_width, if size doesn't change */
	updatesizehints(c);
	XSelectInput(dpy, w,
		StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
	grabbuttons(c, False);
	updatetitle(c);
	if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
		for(t = clients; t && t->win != trans; t = t->next);
	settags(c, t);
	if(!c->isfloating)
		c->isfloating = (rettrans == Success) || c->isfixed;
	attach(c);
	attachstack(c);
	ban(c);
	XMapWindow(dpy, w);
	setclientstate(c, NormalState);
	focus(c);
	lt->arrange();
}

void
resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
	float dx, dy, max, min, ratio;
	XWindowChanges wc;

	if(w <= 0 || h <= 0)
		return;
	if(sizehints) {
		if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
			dx = (float)(w - c->basew);
			dy = (float)(h - c->baseh);
			min = (float)(c->minax) / (float)(c->minay);
			max = (float)(c->maxax) / (float)(c->maxay);
			ratio = dx / dy;
			if(max > 0 && min > 0 && ratio > 0) {
				if(ratio < min) {
					dy = (dx * min + dy) / (min * min + 1);
					dx = dy * min;
					w = (int)dx + c->basew;
					h = (int)dy + c->baseh;
				}
				else if(ratio > max) {
					dy = (dx * min + dy) / (max * max + 1);
					dx = dy * min;
					w = (int)dx + c->basew;
					h = (int)dy + c->baseh;
				}
			}
		}
		if(c->minw && w < c->minw)
			w = c->minw;
		if(c->minh && h < c->minh)
			h = c->minh;
		if(c->maxw && w > c->maxw)
			w = c->maxw;
		if(c->maxh && h > c->maxh)
			h = c->maxh;
		if(c->incw)
			w -= (w - c->basew) % c->incw;
		if(c->inch)
			h -= (h - c->baseh) % c->inch;
	}
	if(w <= 0 || h <= 0)
		return;
	/* offscreen appearance fixes */
	if(x > sw)
		x = sw - w - 2 * c->border;
	if(y > sh)
		y = sh - h - 2 * c->border;
	if(x + w + 2 * c->border < sx)
		x = sx;
	if(y + h + 2 * c->border < sy)
		y = sy;
	if(c->x != x || c->y != y || c->w != w || c->h != h) {
		c->x = wc.x = x;
		c->y = wc.y = y;
		c->w = wc.width = w;
		c->h = wc.height = h;
		wc.border_width = c->border;
		XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
		configure(c);
		XSync(dpy, False);
	}
}

void
togglefloating(const char *arg) {
	if(!sel || lt->arrange == floating)
		return;
	sel->isfloating = !sel->isfloating;
	if(sel->isfloating)
		resize(sel, sel->x, sel->y, sel->w, sel->h, True);
	lt->arrange();
}

void
unban(Client *c) {
	if (!c->isbanned)
		return;
	XMoveWindow(dpy, c->win, c->x, c->y);
	c->isbanned = False;
}

void
unmanage(Client *c) {
	XWindowChanges wc;

	wc.border_width = c->oldborder;
	/* The server grab construct avoids race conditions. */
	XGrabServer(dpy);
	XSetErrorHandler(xerrordummy);
	XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
	detach(c);
	detachstack(c);
	if(sel == c)
		focus(NULL);
	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
	setclientstate(c, WithdrawnState);
	free(c->tags);
	free(c);
	XSync(dpy, False);
	XSetErrorHandler(xerror);
	XUngrabServer(dpy);
	lt->arrange();
}

void
updatesizehints(Client *c) {
	long msize;
	XSizeHints size;

	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
		size.flags = PSize;
	c->flags = size.flags;
	if(c->flags & PBaseSize) {
		c->basew = size.base_width;
		c->baseh = size.base_height;
	}
	else if(c->flags & PMinSize) {
		c->basew = size.min_width;
		c->baseh = size.min_height;
	}
	else
		c->basew = c->baseh = 0;
	if(c->flags & PResizeInc) {
		c->incw = size.width_inc;
		c->inch = size.height_inc;
	}
	else
		c->incw = c->inch = 0;
	if(c->flags & PMaxSize) {
		c->maxw = size.max_width;
		c->maxh = size.max_height;
	}
	else
		c->maxw = c->maxh = 0;
	if(c->flags & PMinSize) {
		c->minw = size.min_width;
		c->minh = size.min_height;
	}
	else if(c->flags & PBaseSize) {
		c->minw = size.base_width;
		c->minh = size.base_height;
	}
	else
		c->minw = c->minh = 0;
	if(c->flags & PAspect) {
		c->minax = size.min_aspect.x;
		c->maxax = size.max_aspect.x;
		c->minay = size.min_aspect.y;
		c->maxay = size.max_aspect.y;
	}
	else
		c->minax = c->maxax = c->minay = c->maxay = 0;
	c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
			&& c->maxw == c->minw && c->maxh == c->minh);
}

void
updatetitle(Client *c) {
	char **list = NULL;
	int n;
	XTextProperty name;

	name.nitems = 0;
	c->name[0] = 0;
	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
	if(!name.nitems)
		XGetWMName(dpy, c->win, &name);
	if(!name.nitems)
		return;
	if(name.encoding == XA_STRING)
		strncpy(c->name, (char *)name.value, sizeof c->name - 1);
	else {
		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
		&& n > 0 && *list)
		{
			strncpy(c->name, *list, sizeof c->name - 1);
			XFreeStringList(list);
		}
	}
	c->name[sizeof c->name - 1] = '\0';
	XFree(name.value);
}