diff --git a/qse/configure b/qse/configure
index 23c1bf5e..7ccfa40c 100755
--- a/qse/configure
+++ b/qse/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.61 for qse 0.5.0.
+# Generated by GNU Autoconf 2.61 for qse 0.5.1.
 #
 # Report bugs to <bacon@abiyo.net>.
 #
@@ -728,8 +728,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
 # Identity of this package.
 PACKAGE_NAME='qse'
 PACKAGE_TARNAME='qse'
-PACKAGE_VERSION='0.5.0'
-PACKAGE_STRING='qse 0.5.0'
+PACKAGE_VERSION='0.5.1'
+PACKAGE_STRING='qse 0.5.1'
 PACKAGE_BUGREPORT='bacon@abiyo.net'
 
 # Factoring default headers for most tests.
@@ -1415,7 +1415,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures qse 0.5.0 to adapt to many kinds of systems.
+\`configure' configures qse 0.5.1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1485,7 +1485,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of qse 0.5.0:";;
+     short | recursive ) echo "Configuration of qse 0.5.1:";;
    esac
   cat <<\_ACEOF
 
@@ -1599,7 +1599,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-qse configure 0.5.0
+qse configure 0.5.1
 generated by GNU Autoconf 2.61
 
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -1613,7 +1613,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by qse $as_me 0.5.0, which was
+It was created by qse $as_me 0.5.1, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   $ $0 $@
@@ -2313,7 +2313,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='qse'
- VERSION='0.5.0'
+ VERSION='0.5.1'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -29615,7 +29615,7 @@ exec 6>&1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by qse $as_me 0.5.0, which was
+This file was extended by qse $as_me 0.5.1, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -29668,7 +29668,7 @@ Report bugs to <bug-autoconf@gnu.org>."
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-qse config.status 0.5.0
+qse config.status 0.5.1
 configured by $0, generated by GNU Autoconf 2.61,
   with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/qse/configure.ac b/qse/configure.ac
index 910dbeab..6409ed28 100644
--- a/qse/configure.ac
+++ b/qse/configure.ac
@@ -1,5 +1,5 @@
 dnl AC_PREREQ(2.59)
-AC_INIT([qse],[0.5.0],[bacon@abiyo.net])
+AC_INIT([qse],[0.5.1],[bacon@abiyo.net])
 AC_CONFIG_HEADER([include/qse/config.h])
 AC_CONFIG_AUX_DIR(autoconf)
 
diff --git a/qse/include/qse/cmn/str.h b/qse/include/qse/cmn/str.h
index 83cb81fc..b91e9f7d 100644
--- a/qse/include/qse/cmn/str.h
+++ b/qse/include/qse/cmn/str.h
@@ -1,5 +1,5 @@
 /*
- * $Id: str.h 75 2009-02-22 14:10:34Z hyunghwan.chung $
+ * $Id: str.h 83 2009-02-24 14:05:17Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -478,6 +478,26 @@ qse_size_t qse_str_nccat (
 	qse_size_t len
 );
 
+/****f* Common/qse_strspltr
+ * NAME
+ *  qse_strspltr - split a string translating special escane sequences
+ * DESCRIPTION
+ *  The argument trset is translation character set which is composed
+ *  of multiple character pairs. An escape character followed by the 
+ *  first character in a pair is translated into the second character
+ *  in the pair. If trset is QSE_NULL, no translation is performed. 
+ * SYNOPSIS
+ */
+int qse_strspltr (
+        qse_char_t*       str,
+	const qse_char_t* delim,
+        qse_char_t        lquote,
+	qse_char_t        rquote,
+        qse_char_t        escape,
+	const qse_char_t* trset
+);
+/******/
+
 /****f* Common/qse_strspl
  * NAME
  *  qse_strspl - split a string
diff --git a/qse/lib/cmn/str_utl.c b/qse/lib/cmn/str_utl.c
index f4e76618..cf036c12 100644
--- a/qse/lib/cmn/str_utl.c
+++ b/qse/lib/cmn/str_utl.c
@@ -1,5 +1,5 @@
 /*
- * $Id: str_utl.c 76 2009-02-22 14:18:06Z hyunghwan.chung $
+ * $Id: str_utl.c 83 2009-02-24 14:05:17Z hyunghwan.chung $
  *
    Copyright 2006-2009 Chung, Hyung-Hwan.
 
@@ -19,9 +19,10 @@
 #include <qse/cmn/str.h>
 #include "chr.h"
 
-int qse_strspl (
+int qse_strspltr (
 	qse_char_t* s, const qse_char_t* delim,
-	qse_char_t lquote, qse_char_t rquote, qse_char_t escape)
+	qse_char_t lquote, qse_char_t rquote, 
+	qse_char_t escape, const qse_char_t* trset)
 {
 	qse_char_t* p = s, *d;
 	qse_char_t* sp = QSE_NULL, * ep = QSE_NULL;
@@ -53,6 +54,19 @@ int qse_strspl (
 
 				if (escape != QSE_T('\0') && *p == escape) 
 				{
+					if (trset != QSE_NULL && p[1] != QSE_T('\0'))
+					{
+						const qse_char_t* ep = trset;
+						while (*ep != QSE_T('\0'))
+						{
+							if (p[1] == *ep++) 
+							{
+								p[1] = *ep;
+								break;
+							}
+						}
+					}
+
 					qse_strcpy (p, p + 1);
 				}
 				else 
@@ -120,6 +134,18 @@ int qse_strspl (
 
 					if (escape != QSE_T('\0') && *p == escape) 
 					{
+						if (trset != QSE_NULL && p[1] != QSE_T('\0'))
+						{
+							const qse_char_t* ep = trset;
+							while (*ep != QSE_T('\0'))
+							{
+								if (p[1] == *ep++) 
+								{
+									p[1] = *ep;
+									break;
+								}
+							}
+						}
 						qse_strcpy (p, p + 1);
 					}
 					else 
@@ -176,6 +202,19 @@ int qse_strspl (
 
 					if (escape != QSE_T('\0') && *p == escape) 
 					{
+						if (trset != QSE_NULL && p[1] != QSE_T('\0'))
+						{
+							const qse_char_t* ep = trset;
+							while (*ep != QSE_T('\0'))
+							{
+								if (p[1] == *ep++) 
+								{
+									p[1] = *ep;
+									break;
+								}
+							}
+						}
+
 						qse_strcpy (p, p + 1);
 					}
 					else 
@@ -256,7 +295,12 @@ exit_point:
 		}
 	}
 
-
 	return cnt;
 }
 
+int qse_strspl (
+	qse_char_t* s, const qse_char_t* delim,
+	qse_char_t lquote, qse_char_t rquote, qse_char_t escape)
+{
+	return qse_strspltr (s, delim, lquote, rquote, escape, QSE_NULL);
+}
diff --git a/qse/lib/utl/Makefile.in b/qse/lib/utl/Makefile.in
index e1d222fd..8ded4fef 100644
--- a/qse/lib/utl/Makefile.in
+++ b/qse/lib/utl/Makefile.in
@@ -33,7 +33,7 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 subdir = lib/utl
-DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
+DIST_COMMON = README $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \