Smaller process listing.
 [rsc] --rw-rw-r-- M 129339 glenda sys 6399 Dec 12 07:24 sys/lib/acid/kernel
	/n/sourcesdump/2005/1212/plan9/sys/lib/acid/kernel:169,175 - 
	/n/sourcesdump/2005/1213/plan9/sys/lib/acid/kernel:169,175
	  	complex Proc p;
	  	local s, i;
	  
	- 	if p.state != 0 then {	// 0 is Dead
	+ 	if p.state != 0 && p.pid != 0 && p.text != 0 then {	// 0 is Dead
	  		s = p.psstate;
	  		if s == 0 then {
	  			s = "kproc";

Useless or incorrect tests.
 [rsc] --rw-rw-r-- M 129339 glenda sys 9496 Dec 12 07:21 sys/src/9/ip/icmp.c
	/n/sourcesdump/2005/1212/plan9/sys/src/9/ip/icmp.c:369,375 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/9/ip/icmp.c:369,375
	  		ipoput4(icmp->f, r, 0, MAXTTL, DFLTTOS, nil);
	  		break;
	  	case Unreachable:
	- 		if(p->code > 5 || p->code < 0)
	+ 		if(p->code > 5)
	  			msg = unreachcode[1];
	  		else
	  			msg = unreachcode[p->code];
 [rsc] --rw-rw-r-- M 129339 presotto sys 18083 Dec 12 07:21 sys/src/9/ip/icmp6.c
	/n/sourcesdump/2005/1212/plan9/sys/src/9/ip/icmp6.c:749,755 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/9/ip/icmp6.c:749,755
	  		break;
	  
	  	case UnreachableV6:
	- 		if(p->code > 4 || p->code < 0)
	+ 		if(p->code > 4)
	  			msg = unreachcode[icmp6_unkn_code];
	  		else
	  			msg = unreachcode[p->code];
 [rsc] --rw-rw-r-- M 129339 glenda sys 26923 Dec 12 07:21 sys/src/9/ip/il.c
	/n/sourcesdump/2005/1212/plan9/sys/src/9/ip/il.c:563,569 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/9/ip/il.c:563,569
	  	v4tov6(laddr, ih->dst);
	  
	  	if((csum = ptclcsum(bp, IL_IPSIZE, illen)) != 0) {
	- 		if(ih->iltype < 0 || ih->iltype > Ilclose)
	+ 		if(ih->iltype > Ilclose)
	  			st = "?";
	  		else
	  			st = iltype[ih->iltype];
	/n/sourcesdump/2005/1212/plan9/sys/src/9/ip/il.c:586,592 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/9/ip/il.c:586,592
	  	if(ic->state == Illistening){
	  		if(ih->iltype != Ilsync){
	  			qunlock(il);
	- 			if(ih->iltype < 0 || ih->iltype > Ilclose)
	+ 			if(ih->iltype > Ilclose)
	  				st = "?";
	  			else
	  				st = iltype[ih->iltype];
 [rsc] --rw-rw-r-- M 129339 presotto sys 28760 Dec 12 07:22 sys/src/9/pc/etherga620.c
	/n/sourcesdump/2005/1212/plan9/sys/src/9/pc/etherga620.c:1056,1062 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/9/pc/etherga620.c:1056,1062
	  static int
	  ga620reset(Ctlr* ctlr)
	  {
	- 	int cls, csr, i;
	+ 	int cls, csr, i, r;
	  
	  	if(ga620detach(ctlr) < 0)
	  		return -1;
	/n/sourcesdump/2005/1212/plan9/sys/src/9/pc/etherga620.c:1095,1102 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/9/pc/etherga620.c:1095,1103
	  	 * Snarf the MAC address from the serial EEPROM.
	  	 */
	  	for(i = 0; i < Eaddrlen; i++){
	- 		if((ctlr->ea[i] = at24c32r(ctlr, 0x8E+i)) == -1)
	+ 		if((r = at24c32r(ctlr, 0x8E+i)) == -1)
	  			return -1;
	+ 		ctlr->ea[i] = r;
	  	}
	  
	  	/*
 [jmk] --rw-rw-r-- M 129339 glenda sys 2494 Dec 12 13:16 sys/src/9/port/sd.h
	/n/sourcesdump/2005/1212/plan9/sys/src/9/port/sd.h:25,31 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/9/port/sd.h:25,31
	  struct SDunit {
	  	SDev*	dev;
	  	int	subno;
	- 	uchar	inquiry[256];		/* format follows SCSI spec */
	+ 	uchar	inquiry[255];		/* format follows SCSI spec */
	  	uchar	sense[18];		/* format follows SCSI spec */
	  	SDperm;
	  

Fix i81x cursor.
 [rsc] --rw-rw-r-- M 129339 glenda sys 12036 Dec 12 07:20 sys/src/cmd/aux/vga/i81x.c
	/n/sourcesdump/2005/1212/plan9/sys/src/cmd/aux/vga/i81x.c:314,319 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/cmd/aux/vga/i81x.c:314,320
	  	int i;
	  	ulong *rp;
	  	I81x *i81x;
	+ 	char *p;
	  
	  	i81x = vga->private;
	  
	/n/sourcesdump/2005/1212/plan9/sys/src/cmd/aux/vga/i81x.c:337,342 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/cmd/aux/vga/i81x.c:338,357
	  		*rp++ = i81x->lcd[i];
	  	/* set cursor, graphic mode */
	  	rp = (ulong*)(i81x->mmio+0x70008);
	+ 	*rp = i81x->pixconf | (1<<8);
	+ 
	+ 	p = (char*)(i81x->mmio+Pixmask);		/* DACMASK */
	+ 	*p = 0xff;
	+ 	p = (char*)(i81x->mmio+PaddrW);		/* DACWX */
	+ 	*p = 0x04;
	+ 	p = (char*)(i81x->mmio+Pdata);		/* DACDATA */
	+ 	*p = 0xff;
	+ 	*p = 0xff;
	+ 	*p = 0xff;
	+ 	*p = 0x00;
	+ 	*p = 0x00;
	+ 	*p = 0x00;
	+ 
	  	*rp = i81x->pixconf;
	  
	  	ctlr->flag |= Fload;

Print to diagbuf so that prints stay together.
 [rsc] --rw-rw-r-- M 129339 glenda sys 26837 Dec 12 07:21 sys/src/cmd/cc/dcl.c
	/n/sourcesdump/2005/1212/plan9/sys/src/cmd/cc/dcl.c:1324,1331 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/cmd/cc/dcl.c:1324,1331
	  	if(s->type != T)
	  		if(s->class != c || !sametype(t, s->type) || t->etype == TENUM) {
	  			diag(Z, "external redeclaration of: %s", s->name);
	- 			print("	%s %T %L\n", cnames[c], t, nearln);
	- 			print("	%s %T %L\n", cnames[s->class], s->type, s->varlineno);
	+ 			Bprint(&diagbuf, "	%s %T %L\n", cnames[c], t, nearln);
	+ 			Bprint(&diagbuf, "	%s %T %L\n", cnames[s->class], s->type, s->varlineno);
	  		}
	  	tmerge(t, s);
	  	s->type = t;

Remove library on mk nuke.
 [rsc] --rw-rw-r-- M 129339 glenda sys 665 Dec 12 07:22 sys/src/cmd/mksyslib
	/n/sourcesdump/2005/1212/plan9/sys/src/cmd/mksyslib:34,40 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/cmd/mksyslib:34,40
	  	rm -f $stem.[$OS] [$OS].$stem $stem.acid $stem
	  
	  nuke:V:
	- 	rm -f *.[$OS] [$OS].out $CLEANFILES
	+ 	rm -f *.[$OS] [$OS].out $CLEANFILES $LIB
	  
	  %.acid: %.$O $HFILES
	  	$CC $CFLAGS -a $stem.c >$target

Only nuke $objtype.
 [rsc] --rw-rw-r-- M 129339 glenda sys 745 Dec 12 09:06 sys/src/libc/mkfile
	/n/sourcesdump/2005/1212/plan9/sys/src/libc/mkfile:1,9 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/libc/mkfile:1,10
	  </$objtype/mkfile
	  
	- DIRS=9sys 9syscall fmt port $CPUS
	+ PORTDIRS=9sys 9syscall fmt port
	+ DIRS=$PORTDIRS $CPUS
	  
	  all install:V:
	- 	for(i in 9sys 9syscall fmt port $objtype)@{
	+ 	for(i in $PORTDIRS $objtype)@{
	  		echo $i
	  		cd $i
	  		mk $MKFLAGS install
	/n/sourcesdump/2005/1212/plan9/sys/src/libc/mkfile:17,26 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/libc/mkfile:18,33
	  	}
	  
	  nuke:V:
	- 	for(i in $DIRS)@{
	+ 	for(i in $PORTDIRS $objtype)@{
	  		echo $i
	  		cd $i
	  		mk $MKFLAGS nuke
	+ 	}
	+ 	# do not nuke other objtypes
	+ 	for(i in $CPUS)@{
	+ 		echo $i
	+ 		cd $i
	+ 		mk $MKFLAGS clean
	  	}
	  
	  update:V:
 [rsc] --rw-rw-r-- M 129339 glenda sys 962 Dec 12 17:27 sys/src/libmp/mkfile
	/n/sourcesdump/2005/1212/plan9/sys/src/libmp/mkfile:4,15 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/libmp/mkfile:4,18
	  
	  default:V:	all
	  
	- install clean nuke all:V:
	+ install clean all:V:
	  	for(i in port $objtype)@{
	  		echo $i
	  		cd $i
	  		mk $MKFLAGS $target
	  	}
	+ 
	+ nuke:V: clean
	+ 	rm -f /$objtype/lib/libmp.a
	  
	  update:V:
	  	for(i in port $CPUS)@{
 [rsc] --rw-rw-r-- M 129339 glenda sys 554 Dec 12 17:28 sys/src/libsec/mkfile
	/n/sourcesdump/2005/1212/plan9/sys/src/libsec/mkfile:1,6 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/libsec/mkfile:1,6
	  </$objtype/mkfile
	  
	- DIRS=port 386 alpha arm mips power
	+ DIRS=port $CPUS
	  
	  default:V:	all
	  
	/n/sourcesdump/2005/1212/plan9/sys/src/libsec/mkfile:11,17 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/libsec/mkfile:11,17
	  		mk $MKFLAGS $target
	  	}
	  
	- clean nuke:V:
	+ clean:V:
	  	for(i in $DIRS)@{
	  		echo $i
	  		cd $i
	/n/sourcesdump/2005/1212/plan9/sys/src/libsec/mkfile:18,23 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/libsec/mkfile:18,26
	  		mk $MKFLAGS $target
	  	}
	  
	+ nuke:V: clean
	+ 	rm -f /$objtype/lib/libsec.a
	+ 
	  update:V:
	  	for(i in $DIRS)@{
	  		echo $i
	/n/sourcesdump/2005/1212/plan9/sys/src/libsec/mkfile:30,38 - 
	/n/sourcesdump/2005/1213/plan9/sys/src/libsec/mkfile:33,41
	  	for(objtype in $CPUS) mk $MKFLAGS install
	  
	  everything:V:
	- 	rm -f */*.[012456789kvx]
	+ 	rm -f */*.[012456789kqv]
	  	for(objtype in 386)@{
	  		echo $objtype
	  		mk $MKFLAGS install
	  	}
	- 	rm -f */*.[012456789kvx]
	+ 	rm -f */*.[012456789kqv]