diff --git a/Build.sh b/Build.sh
index bb9cfe3..40d2c55 100644
--- a/Build.sh
+++ b/Build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.624 2013/03/05 15:41:39 tg Exp $'
+srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.625 2013/03/24 00:56:17 tg Exp $'
 #-
 # Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
 #		2011, 2012, 2013
@@ -1532,7 +1532,7 @@ else
 		#define EXTERN
 		#define MKSH_INCLUDES_ONLY
 		#include "sh.h"
-		__RCSID("$MirOS: src/bin/mksh/Build.sh,v 1.624 2013/03/05 15:41:39 tg Exp $");
+		__RCSID("$MirOS: src/bin/mksh/Build.sh,v 1.625 2013/03/24 00:56:17 tg Exp $");
 		int main(void) { printf("Hello, World!\n"); return (0); }
 EOF
 	case $cm in
@@ -2120,7 +2120,7 @@ addsrcs USE_PRINTF_BUILTIN printf.c
 test 1 = "$USE_PRINTF_BUILTIN" && add_cppflags -DMKSH_PRINTF_BUILTIN
 test 1 = "$HAVE_CAN_VERB" && CFLAGS="$CFLAGS -verbose"
 test -n "$LDSTATIC" && add_cppflags -DMKSH_OPTSTATIC
-add_cppflags -DMKSH_BUILD_R=441
+add_cppflags -DMKSH_BUILD_R=449
 
 $e $bi$me: Finished configuration testing, now producing output.$ao
 
diff --git a/Makefile b/Makefile
index 360f763..74af84f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# $MirOS: src/bin/mksh/Makefile,v 1.114 2013/03/05 15:41:40 tg Exp $
+# $MirOS: src/bin/mksh/Makefile,v 1.115 2013/03/24 00:56:19 tg Exp $
 #-
 # Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
 #		2011, 2012, 2013
@@ -55,7 +55,7 @@ CPPFLAGS+=	-DMKSH_ASSUME_UTF8 -DMKSH_DISABLE_DEPRECATED \
 		-DHAVE_STRLCPY=1 -DHAVE_FLOCK_DECL=1 -DHAVE_REVOKE_DECL=1 \
 		-DHAVE_SYS_ERRLIST_DECL=1 -DHAVE_SYS_SIGLIST_DECL=1 \
 		-DHAVE_PERSISTENT_HISTORY=1 -DHAVE_SILENT_IDIVWRAPV=0 \
-		-DMKSH_BUILD_R=441
+		-DMKSH_BUILD_R=449
 CPPFLAGS+=	-D${${PROG:L}_tf:C/(Mir${MAN:E}{0,1}){2}/4/:S/x/mksh_BUILD/:U}
 COPTS+=		-std=c99 -Wall
 .endif
diff --git a/check.t b/check.t
index 0e4182a..518e09f 100644
--- a/check.t
+++ b/check.t
@@ -1,4 +1,4 @@
-# $MirOS: src/bin/mksh/check.t,v 1.599 2013/02/24 14:22:41 tg Exp $
+# $MirOS: src/bin/mksh/check.t,v 1.600 2013/03/24 00:56:19 tg Exp $
 # $OpenBSD: bksl-nl.t,v 1.2 2001/01/28 23:04:56 niklas Exp $
 # $OpenBSD: history.t,v 1.5 2001/01/28 23:04:56 niklas Exp $
 # $OpenBSD: read.t,v 1.3 2003/03/10 03:48:16 david Exp $
@@ -29,7 +29,7 @@
 # http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/regression/bin/test/regress.sh?rev=HEAD
 
 expected-stdout:
-	@(#)MIRBSD KSH R44 2013/02/24
+	@(#)MIRBSD KSH R44 2013/03/23
 description:
 	Check version of shell.
 stdin:
@@ -38,7 +38,7 @@ name: KSH_VERSION
 category: shell:legacy-no
 ---
 expected-stdout:
-	@(#)LEGACY KSH R44 2013/02/24
+	@(#)LEGACY KSH R44 2013/03/23
 description:
 	Check version of legacy shell.
 stdin:
@@ -5658,8 +5658,8 @@ stdin:
 expected-stdout:
 	END
 expected-stderr:
-	+ env false
-	+ echo END
+	+ env false 
+	+ echo END 
 ---
 name: exit-err-2
 description:
@@ -5678,9 +5678,9 @@ stdin:
 expected-stdout:
 	END
 expected-stderr:
-	+ env true
-	+ env false
-	+ echo END
+	+ env true 
+	+ env false 
+	+ echo END 
 ---
 name: exit-err-3
 description:
diff --git a/exec.c b/exec.c
index 9a384db..9074502 100644
--- a/exec.c
+++ b/exec.c
@@ -23,7 +23,7 @@
 
 #include "sh.h"
 
-__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.116 2013/02/17 05:40:15 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.117 2013/03/24 00:56:22 tg Exp $");
 
 #ifndef MKSH_DEFAULT_EXECSHELL
 #define MKSH_DEFAULT_EXECSHELL	"/bin/sh"
@@ -138,12 +138,10 @@ execute(struct op * volatile t,
 			/* Allow option parsing (bizarre, but POSIX) */
 			timex_hook(t, &up);
 		ap = (const char **)up;
-		if (Flag(FXTRACE) && ap[0]) {
+		if (Flag(FXTRACE)) {
 			shf_puts(substitute(str_val(global("PS4")), 0),
 			    shl_out);
-			for (i = 0; ap[i]; i++)
-				shf_fprintf(shl_out, "%s%c", ap[i],
-				    ap[i + 1] ? ' ' : '\n');
+			fptreef(shl_out, 0, "%T\n", t);
 			shf_flush(shl_out);
 		}
 		if (ap[0])
@@ -645,16 +643,6 @@ comexec(struct op *t, struct tbl * volatile tp, const char **ap,
 		cp = evalstr(t->vars[i], DOASNTILDE);
 		e->loc = l_assign;
 		/* but assign in there as usual */
-
-		if (Flag(FXTRACE)) {
-			if (i == 0)
-				shf_puts(substitute(str_val(global("PS4")), 0),
-				    shl_out);
-			shf_fprintf(shl_out, "%s%c", cp,
-			    t->vars[i + 1] ? ' ' : '\n');
-			if (!t->vars[i + 1])
-				shf_flush(shl_out);
-		}
 		typeset(cp, type_flags, 0, 0, 0);
 		if (bourne_function_call && !(type_flags & EXPORT))
 			typeset(cp, LOCAL|LOCAL_COPY|EXPORT, 0, 0, 0);
@@ -1298,11 +1286,6 @@ iosetup(struct ioword *iop, struct tbl *tp)
 	iotmp.name = (iotype == IOHERE) ? NULL : cp;
 	iotmp.flag |= IONAMEXP;
 
-	if (Flag(FXTRACE))
-		shellf("%s%s\n",
-		    substitute(str_val(global("PS4")), 0),
-		    snptreef(NULL, 32, "%R", &iotmp));
-
 	switch (iotype) {
 	case IOREAD:
 		flags = O_RDONLY;
@@ -1345,8 +1328,11 @@ iosetup(struct ioword *iop, struct tbl *tp)
 		} else if ((u = check_fd(cp,
 		    X_OK | ((iop->flag & IORDUP) ? R_OK : W_OK),
 		    &emsg)) < 0) {
+			char *sp;
+
 			warningf(true, "%s: %s",
-			    snptreef(NULL, 32, "%R", &iotmp), emsg);
+			    (sp = snptreef(NULL, 32, "%R", &iotmp)), emsg);
+			afree(sp, ATEMP);
 			return (-1);
 		}
 		if (u == iop->unit)
@@ -1395,12 +1381,14 @@ iosetup(struct ioword *iop, struct tbl *tp)
 	else if (u != iop->unit) {
 		if (ksh_dup2(u, iop->unit, true) < 0) {
 			int eno;
+			char *sp;
 
 			eno = errno;
 			warningf(true, "%s %s %s",
 			    "can't finish (dup) redirection",
-			    snptreef(NULL, 32, "%R", &iotmp),
+			    (sp = snptreef(NULL, 32, "%R", &iotmp)),
 			    cstrerror(eno));
+			afree(sp, ATEMP);
 			if (iotype != IODUP)
 				close(u);
 			return (-1);
diff --git a/mksh.1 b/mksh.1
index 51800fc..2d7f2bf 100644
--- a/mksh.1
+++ b/mksh.1
@@ -1,4 +1,4 @@
-.\" $MirOS: src/bin/mksh/mksh.1,v 1.305 2013/02/19 18:45:20 tg Exp $
+.\" $MirOS: src/bin/mksh/mksh.1,v 1.306 2013/03/24 00:56:23 tg Exp $
 .\" $OpenBSD: ksh.1,v 1.145 2013/01/17 21:20:25 jmc Exp $
 .\"-
 .\" Copyright © 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
@@ -74,7 +74,7 @@
 .\" with -mandoc, it might implement .Mx itself, but we want to
 .\" use our own definition. And .Dd must come *first*, always.
 .\"
-.Dd $Mdocdate: February 19 2013 $
+.Dd $Mdocdate: March 24 2013 $
 .\"
 .\" Check which macro package we use, and do other -mdoc setup.
 .\"
@@ -2037,6 +2037,9 @@ Parameter, command, and arithmetic substitutions are performed
 before it is printed.
 The default is
 .Sq +\ \& .
+You may want to set it to
+.Sq \&[$EPOCHREALTIME]\ \&
+instead, to include timestamps.
 .It Ev PWD
 The current working directory.
 May be unset or
@@ -4097,7 +4100,7 @@ Mark directories with a trailing
 .Ql /
 during file name generation.
 .It Fl x \*(Ba Fl o Ic xtrace
-Print commands and parameter assignments when they are executed, preceded by
+Print command trees when they are executed, preceded by
 the value of
 .Ev PS4 .
 .It Fl o Ic bgnice
@@ -6335,7 +6338,7 @@ $ /bin/sleep 666 && echo fubar
 .Ed
 .Pp
 This document attempts to describe
-.Nm mksh\ R43
+.Nm mksh\ R44
 and up,
 compiled without any options impacting functionality, such as
 .Dv MKSH_SMALL ,
diff --git a/sh.h b/sh.h
index 5cf4890..4d4f3bf 100644
--- a/sh.h
+++ b/sh.h
@@ -164,9 +164,9 @@
 #endif
 
 #ifdef EXTERN
-__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.642 2013/03/05 15:41:41 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.643 2013/03/24 00:56:25 tg Exp $");
 #endif
-#define MKSH_VERSION "R44 2013/02/24"
+#define MKSH_VERSION "R44 2013/03/23"
 
 /* arithmetic types: C implementation */
 #if !HAVE_CAN_INTTYPES
@@ -511,7 +511,7 @@ char *ucstrstr(char *, const char *);
 #define mkssert(e)	do { } while (/* CONSTCOND */ 0)
 #endif
 
-#if (!defined(MKSH_BUILDMAKEFILE4BSD) && !defined(MKSH_BUILDSH)) || (MKSH_BUILD_R != 441)
+#if (!defined(MKSH_BUILDMAKEFILE4BSD) && !defined(MKSH_BUILDSH)) || (MKSH_BUILD_R != 449)
 #error Must run Build.sh to compile this.
 int
 im_sorry_dave(void)
diff --git a/tree.c b/tree.c
index 8015a8d..b6df137 100644
--- a/tree.c
+++ b/tree.c
@@ -23,12 +23,12 @@
 
 #include "sh.h"
 
-__RCSID("$MirOS: src/bin/mksh/tree.c,v 1.67 2012/12/04 01:10:35 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/tree.c,v 1.68 2013/03/24 00:56:27 tg Exp $");
 
 #define INDENT	8
 
 static void ptree(struct op *, int, struct shf *);
-static void pioact(struct shf *, int, struct ioword *);
+static void pioact(struct shf *, struct ioword *);
 static const char *wdvarput(struct shf *, const char *, int, int);
 static void vfptreef(struct shf *, int, const char *, va_list);
 static struct ioword **iocopy(struct ioword **, Area *);
@@ -214,7 +214,7 @@ ptree(struct op *t, int indent, struct shf *shf)
 		bool need_nl = false;
 
 		while (*ioact != NULL)
-			pioact(shf, indent, *ioact++);
+			pioact(shf, *ioact++);
 		/* Print here documents after everything else... */
 		ioact = t->ioact;
 		while (*ioact != NULL) {
@@ -244,7 +244,7 @@ ptree(struct op *t, int indent, struct shf *shf)
 }
 
 static void
-pioact(struct shf *shf, int indent, struct ioword *iop)
+pioact(struct shf *shf, struct ioword *iop)
 {
 	int flag = iop->flag;
 	int type = flag & IOTYPE;
@@ -283,9 +283,13 @@ pioact(struct shf *shf, int indent, struct ioword *iop)
 			wdvarput(shf, iop->delim, 0, WDS_TPUTS);
 		if (iop->flag & IOHERESTR)
 			shf_putc(' ', shf);
-	} else if (iop->name)
-		fptreef(shf, indent, (iop->flag & IONAMEXP) ? "%s " : "%S ",
-		    iop->name);
+	} else if (iop->name) {
+		if (iop->flag & IONAMEXP)
+			print_value_quoted(shf, iop->name);
+		else
+			wdvarput(shf, iop->name, 0, WDS_TPUTS);
+		shf_putc(' ', shf);
+	}
 	prevent_semicolon = false;
 }
 
@@ -485,7 +489,7 @@ vfptreef(struct shf *shf, int indent, const char *fmt, va_list va)
 				break;
 			case 'R':
 				/* I/O redirection */
-				pioact(shf, indent, va_arg(va, struct ioword *));
+				pioact(shf, va_arg(va, struct ioword *));
 				break;
 			default:
 				shf_putc(c, shf);