diff --git a/qse/include/qse/cmn/rex.h b/qse/include/qse/cmn/rex.h
index 0c600958..f0f28a0c 100644
--- a/qse/include/qse/cmn/rex.h
+++ b/qse/include/qse/cmn/rex.h
@@ -1,5 +1,5 @@
 /*
- * $Id: rex.h 307 2009-11-25 13:32:20Z hyunghwan.chung $
+ * $Id: rex.h 309 2009-11-27 13:46:49Z hyunghwan.chung $
  *
     Copyright 2006-2009 Chung, Hyung-Hwan.
     This file is part of QSE.
@@ -236,11 +236,10 @@ qse_rex_node_t* qse_rex_comp (
 );
 
 int qse_rex_exec (
-	qse_rex_t*        rex,
-	const qse_char_t* str,
-	qse_size_t        len,
-	const qse_char_t* substr,
-	qse_size_t        sublen
+        qse_rex_t*        rex,
+	const qse_cstr_t* str, 
+        const qse_cstr_t* substr,
+	qse_cstr_t*       matstr
 );
 
 void* qse_buildrex (
diff --git a/qse/lib/cmn/rex1.c b/qse/lib/cmn/rex1.c
index 7ac8cf10..2fb37c90 100644
--- a/qse/lib/cmn/rex1.c
+++ b/qse/lib/cmn/rex1.c
@@ -739,7 +739,7 @@ static qse_rex_node_t* comp2 (comp_t* com)
 				/* enter a subgroup */
 
 				qse_rex_node_t* x, * ge;
-			
+
 				n = newgroupnode (com, QSE_NULL);
 				if (n == QSE_NULL) return QSE_NULL;
 
@@ -765,7 +765,6 @@ static qse_rex_node_t* comp2 (comp_t* com)
 				break;
 			}
 			
-			
 			case QSE_T('.'):
 				n = newnode (com, QSE_REX_NODE_ANY);
 				if (n == QSE_NULL) return QSE_NULL;
@@ -1036,8 +1035,11 @@ static group_t* dupgroupstack (exec_t* e, group_t* gs)
 	return head;
 }
 
-/* creates a new group stack duplicating 'gs' and push 'gn' to it */
-static group_t* dupgroupstackpush (exec_t* e, group_t* gs, qse_rex_node_t* gn)
+/* push 'gn' to the group stack 'gs'.
+ * if dup is non-zero, the group stack is duplicated and 'gn' is pushed to 
+ * its top */
+static group_t* __groupstackpush (
+	exec_t* e, group_t* gs, qse_rex_node_t* gn, int dup)
 {
 	group_t* head, * elem;
 
@@ -1064,9 +1066,16 @@ static group_t* dupgroupstackpush (exec_t* e, group_t* gs, qse_rex_node_t* gn)
 	}
 	else 
 	{
-		/* duplicate existing stack */
-		head = dupgroupstack (e, gs);
-		if (head == QSE_NULL) return QSE_NULL;
+		if (dup)
+		{
+			/* duplicate existing stack */
+			head = dupgroupstack (e, gs);
+			if (head == QSE_NULL) return QSE_NULL;
+		}
+		else
+		{
+			head = gs;
+		}
 	}
 
 	/* create a new stack element */
@@ -1076,7 +1085,8 @@ static group_t* dupgroupstackpush (exec_t* e, group_t* gs, qse_rex_node_t* gn)
 		/* rollback */
 		if (gs == QSE_NULL) 
 			QSE_MMGR_FREE (e->rex->mmgr, head);
-		else freegroupstack (head, e->rex->mmgr);
+		else if (dup) 
+			freegroupstack (head, e->rex->mmgr);
 
 		e->rex->errnum = QSE_REX_ENOMEM;
 		return QSE_NULL;
@@ -1093,6 +1103,9 @@ static group_t* dupgroupstackpush (exec_t* e, group_t* gs, qse_rex_node_t* gn)
 	return head;
 }
 
+#define dupgroupstackpush(e,gs,gn) __groupstackpush(e,gs,gn,1)
+#define groupstackpush(e,gs,gn) __groupstackpush(e,gs,gn,0)
+
 /* duplidate a group stack excluding the top data element */
 static group_t* dupgroupstackpop (exec_t* e, group_t* gs)
 {
@@ -1195,7 +1208,7 @@ static int addcands (
 	{
 		case QSE_REX_NODE_END:
 		{
-qse_printf (QSE_T("== ADDING THE END(MATCH) NODE MEANING MATCH FOUND == \n"));
+/*qse_printf (QSE_T("== ADDING THE END(MATCH) NODE MEANING MATCH FOUND == \n"));*/
 			if (e->matchend == QSE_NULL || mptr >= e->matchend)
 				e->matchend = mptr;
 			e->nmatches++;
@@ -1258,12 +1271,19 @@ qse_printf (QSE_T("== ADDING THE END(MATCH) NODE MEANING MATCH FOUND == \n"));
 				group_t* gx;
 	
 				/* push the current group node (candnode) to 
-				 * the group stack duplicated. */
+				 * the group stack. if candnode->next is 
+				 * added to the candidate array, which means
+				 * the group stack has already been used to 
+				 * a different path, the group stack is
+				 * duplicated for this path. */
 
-				gx = dupgroupstackpush (e, group, candnode);
+				gx = (candnode->occ.min <= 0)?
+					dupgroupstackpush (e, group, candnode):
+					groupstackpush (e, group, candnode);
 				if (gx == QSE_NULL) return -1;
 
-				/* add the first node in the group */
+				/* add the first node in the group to 
+				 * the candidate array */
 				refupgroupstack (gx);
 				n = addcands (e, gx,
 					candnode, candnode->u.g.head, mptr);
@@ -1287,7 +1307,14 @@ qse_printf (QSE_T("== ADDING THE END(MATCH) NODE MEANING MATCH FOUND == \n"));
 
 			if (prevnode == candnode) 
 			{
-qse_printf (QSE_T("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"));
+				/* consider a pattern like (x*)*.
+				 * when GROUPEND is reached, an 'if' block below
+				 * tries to add the first node(node->u.g.head) 
+				 * in the group again. however, it('x') is optional, 
+				 * a possible path reach GROUPEND directly without 
+				 * adding a candidate. this check is needed to 
+				 * avoid the infinite loop, which otherwise is not
+				 * avoidable. */
 				break;
 			}
 	
@@ -1302,7 +1329,10 @@ qse_printf (QSE_T("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"));
 			{
 				group_t* gx;
 	
-				/* take the next atom as a candidate.
+				/* the lower bound has been met. 
+				 * for a pattern (abc){3,4}, 'abc' has been 
+				 * repeated 3 times. in this case, the next 
+				 * node can be added to the candiate array.
 				 * it is actually a branch case. move on. */
 	
 				if (top->next == QSE_NULL)
@@ -1354,7 +1384,6 @@ qse_printf (QSE_T("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"));
 			break;
 		}
 
-
 		default:
 		{
 			int n;
@@ -1373,10 +1402,14 @@ qse_printf (QSE_T("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"));
 			{
 				group_t* gx;
 	
+				/* if the upper bound is greater than 0, 
+				 * this node is added to the candidate array */
+
 				if (group != QSE_NULL && candnode->occ.min <= 0)
 				{
-					/* if it belongs to a group and it has been
-					 * pushed to a different path above, 
+					/* if a group stack exists(group != QSE_NULL)
+					 * for this path  and it has been
+					 * used for a different path above, 
 					 * duplicate the group stack */
 					gx = dupgroupstack (e, group);
 					if (gx == QSE_NULL) return -1;
@@ -1511,7 +1544,7 @@ static int match (exec_t* e)
 					 * next chracter.*/
 					nmptr = cand->mptr + 1;
 				}
-//qse_printf (QSE_T("matched %c\n"), node->u.c);
+/*qse_printf (QSE_T("matched %c\n"), node->u.c);*/
 				break;
 
 			case QSE_REX_NODE_CSET:
@@ -1626,6 +1659,7 @@ static int exec (exec_t* e)
 		/* clear the pending set */
 		qse_lda_clear (&e->cand.set[e->cand.pending]); 
 
+#if 0
 {
 int i;
 qse_printf (QSE_T("SET="));
@@ -1645,20 +1679,24 @@ for (i = 0; i < QSE_LDA_SIZE(&e->cand.set[e->cand.active]); i++)
 }
 qse_printf (QSE_T("\n"));
 }
+#endif
 
 		if (match (e) <= -1) return -1;
 	}
 	while (1);
 
+#if 0
 if (e->nmatches > 0)
 {
-	qse_printf (QSE_T("MATCH: %d [%.*s]\n"), 
-		(int)(e->matchend - e->sub.ptr), 
-		(int)(e->matchend - e->sub.ptr), e->sub.ptr);
+qse_printf (QSE_T("MATCH: %d [%.*s]\n"), 
+	(int)(e->matchend - e->sub.ptr), 
+	(int)(e->matchend - e->sub.ptr), e->sub.ptr);
 }
 
-	qse_printf (QSE_T("TOTAL MATCHES FOUND... %d\n"), e->nmatches);
-	return 0;
+qse_printf (QSE_T("TOTAL MATCHES FOUND... %d\n"), e->nmatches);
+#endif
+
+	return (e->nmatches > 0)? 1: 0;
 }
 
 static void refdowngroupstack_incand (qse_lda_t* lda, void* dptr, qse_size_t dlen)
@@ -1700,9 +1738,9 @@ static void fini_exec_dds (exec_t* e)
 	qse_lda_fini (&e->cand.set[0]);
 }
 
-int qse_rex_exec (qse_rex_t* rex, 
-	const qse_char_t* str, qse_size_t len,
-	const qse_char_t* substr, qse_size_t sublen)
+int qse_rex_exec (
+	qse_rex_t* rex, const qse_cstr_t* str, 
+	const qse_cstr_t* substr, qse_cstr_t* matstr)
 {
 	exec_t e;
 	int n = 0;
@@ -1716,10 +1754,10 @@ int qse_rex_exec (qse_rex_t* rex,
 	QSE_MEMSET (&e, 0, QSE_SIZEOF(e));
 
 	e.rex = rex;
-	e.str.ptr = str;
-	e.str.end = str + len;
-	e.sub.ptr = substr;
-	e.sub.end = substr + sublen;
+	e.str.ptr = str->ptr;
+	e.str.end = str->ptr + str->len;
+	e.sub.ptr = substr->ptr;
+	e.sub.end = substr->ptr + substr->len;
 
 	if (init_exec_dds (&e, rex->mmgr) <= -1) return -1;
 
@@ -1732,7 +1770,14 @@ int qse_rex_exec (qse_rex_t* rex,
 			break;
 		}
 
-		if (e.nmatches > 0) break;
+		if (n >= 1)
+		{
+			QSE_ASSERT (e.nmatches > 0);
+			QSE_ASSERT (e.matchend != QSE_NULL);
+			matstr->ptr = e.sub.ptr;
+			matstr->len = e.matchend - e.sub.ptr;
+			break;
+		}
 
 		e.sub.ptr++;
 	}
diff --git a/qse/samples/cmn/Makefile.am b/qse/samples/cmn/Makefile.am
index 49aa0d61..64bb2bef 100644
--- a/qse/samples/cmn/Makefile.am
+++ b/qse/samples/cmn/Makefile.am
@@ -18,9 +18,9 @@ rex01_SOURCES = rex01.c
 
 if ENABLE_CXX
 
-bin_PROGRAMS += rex02
-rex02_SOURCES = rex02.cpp
-rex02_CXXFLAGS = -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread 
-rex02_LDFLAGS = -pthread -Wl,-Bsymbolic-functions  -lwx_gtk2ud_richtext-2.8 -lwx_gtk2ud_aui-2.8 -lwx_gtk2ud_xrc-2.8 -lwx_gtk2ud_qa-2.8 -lwx_gtk2ud_html-2.8 -lwx_gtk2ud_adv-2.8 -lwx_gtk2ud_core-2.8 -lwx_baseud_xml-2.8 -lwx_baseud_net-2.8 -lwx_baseud-2.8 
+#bin_PROGRAMS += rex02
+#rex02_SOURCES = rex02.cpp
+#rex02_CXXFLAGS = -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread 
+#rex02_LDFLAGS = -pthread -Wl,-Bsymbolic-functions  -lwx_gtk2ud_richtext-2.8 -lwx_gtk2ud_aui-2.8 -lwx_gtk2ud_xrc-2.8 -lwx_gtk2ud_qa-2.8 -lwx_gtk2ud_html-2.8 -lwx_gtk2ud_adv-2.8 -lwx_gtk2ud_core-2.8 -lwx_baseud_xml-2.8 -lwx_baseud_net-2.8 -lwx_baseud-2.8 
 
 endif
diff --git a/qse/samples/cmn/Makefile.in b/qse/samples/cmn/Makefile.in
index 7a70668f..95af257e 100644
--- a/qse/samples/cmn/Makefile.in
+++ b/qse/samples/cmn/Makefile.in
@@ -36,8 +36,7 @@ build_triplet = @build@
 host_triplet = @host@
 bin_PROGRAMS = chr$(EXEEXT) str$(EXEEXT) sll$(EXEEXT) map$(EXEEXT) \
 	lda$(EXEEXT) fio$(EXEEXT) pio$(EXEEXT) sio$(EXEEXT) \
-	time$(EXEEXT) rex01$(EXEEXT) $(am__EXEEXT_1)
-@ENABLE_CXX_TRUE@am__append_1 = rex02
+	time$(EXEEXT) rex01$(EXEEXT)
 subdir = samples/cmn
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
@@ -52,7 +51,6 @@ mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = $(top_builddir)/include/qse/config.h
 CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
-@ENABLE_CXX_TRUE@am__EXEEXT_1 = rex02$(EXEEXT)
 am__installdirs = "$(DESTDIR)$(bindir)"
 PROGRAMS = $(bin_PROGRAMS)
 am_chr_OBJECTS = chr.$(OBJEXT)
@@ -79,14 +77,6 @@ am_rex01_OBJECTS = rex01.$(OBJEXT)
 rex01_OBJECTS = $(am_rex01_OBJECTS)
 rex01_LDADD = $(LDADD)
 rex01_DEPENDENCIES =
-am__rex02_SOURCES_DIST = rex02.cpp
-@ENABLE_CXX_TRUE@am_rex02_OBJECTS = rex02-rex02.$(OBJEXT)
-rex02_OBJECTS = $(am_rex02_OBJECTS)
-rex02_LDADD = $(LDADD)
-rex02_DEPENDENCIES =
-rex02_LINK = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
-	--mode=link $(CXXLD) $(rex02_CXXFLAGS) $(CXXFLAGS) \
-	$(rex02_LDFLAGS) $(LDFLAGS) -o $@
 am_sio_OBJECTS = sio.$(OBJEXT)
 sio_OBJECTS = $(am_sio_OBJECTS)
 sio_LDADD = $(LDADD)
@@ -116,22 +106,12 @@ CCLD = $(CC)
 LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
 	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
 	$(LDFLAGS) -o $@
-CXXCOMPILE = $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
-	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)
-LTCXXCOMPILE = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
-	--mode=compile $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
-	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)
-CXXLD = $(CXX)
-CXXLINK = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
-	--mode=link $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) \
-	$(LDFLAGS) -o $@
 SOURCES = $(chr_SOURCES) $(fio_SOURCES) $(lda_SOURCES) $(map_SOURCES) \
-	$(pio_SOURCES) $(rex01_SOURCES) $(rex02_SOURCES) \
-	$(sio_SOURCES) $(sll_SOURCES) $(str_SOURCES) $(time_SOURCES)
-DIST_SOURCES = $(chr_SOURCES) $(fio_SOURCES) $(lda_SOURCES) \
-	$(map_SOURCES) $(pio_SOURCES) $(rex01_SOURCES) \
-	$(am__rex02_SOURCES_DIST) $(sio_SOURCES) $(sll_SOURCES) \
+	$(pio_SOURCES) $(rex01_SOURCES) $(sio_SOURCES) $(sll_SOURCES) \
 	$(str_SOURCES) $(time_SOURCES)
+DIST_SOURCES = $(chr_SOURCES) $(fio_SOURCES) $(lda_SOURCES) \
+	$(map_SOURCES) $(pio_SOURCES) $(rex01_SOURCES) $(sio_SOURCES) \
+	$(sll_SOURCES) $(str_SOURCES) $(time_SOURCES)
 ETAGS = etags
 CTAGS = ctags
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
@@ -284,13 +264,10 @@ pio_SOURCES = pio.c
 sio_SOURCES = sio.c
 time_SOURCES = time.c
 rex01_SOURCES = rex01.c
-@ENABLE_CXX_TRUE@rex02_SOURCES = rex02.cpp
-@ENABLE_CXX_TRUE@rex02_CXXFLAGS = -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread 
-@ENABLE_CXX_TRUE@rex02_LDFLAGS = -pthread -Wl,-Bsymbolic-functions  -lwx_gtk2ud_richtext-2.8 -lwx_gtk2ud_aui-2.8 -lwx_gtk2ud_xrc-2.8 -lwx_gtk2ud_qa-2.8 -lwx_gtk2ud_html-2.8 -lwx_gtk2ud_adv-2.8 -lwx_gtk2ud_core-2.8 -lwx_baseud_xml-2.8 -lwx_baseud_net-2.8 -lwx_baseud-2.8 
 all: all-am
 
 .SUFFIXES:
-.SUFFIXES: .c .cpp .lo .o .obj
+.SUFFIXES: .c .lo .o .obj
 $(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
 	@for dep in $?; do \
 	  case '$(am__configure_deps)' in \
@@ -382,9 +359,6 @@ pio$(EXEEXT): $(pio_OBJECTS) $(pio_DEPENDENCIES)
 rex01$(EXEEXT): $(rex01_OBJECTS) $(rex01_DEPENDENCIES) 
 	@rm -f rex01$(EXEEXT)
 	$(LINK) $(rex01_OBJECTS) $(rex01_LDADD) $(LIBS)
-rex02$(EXEEXT): $(rex02_OBJECTS) $(rex02_DEPENDENCIES) 
-	@rm -f rex02$(EXEEXT)
-	$(rex02_LINK) $(rex02_OBJECTS) $(rex02_LDADD) $(LIBS)
 sio$(EXEEXT): $(sio_OBJECTS) $(sio_DEPENDENCIES) 
 	@rm -f sio$(EXEEXT)
 	$(LINK) $(sio_OBJECTS) $(sio_LDADD) $(LIBS)
@@ -410,7 +384,6 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/map.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pio.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rex01.Po@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rex02-rex02.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sio.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sll.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/str.Po@am__quote@
@@ -437,41 +410,6 @@ distclean-compile:
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(LTCOMPILE) -c -o $@ $<
 
-.cpp.o:
-@am__fastdepCXX_TRUE@	$(CXXCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCXX_FALSE@	$(CXXCOMPILE) -c -o $@ $<
-
-.cpp.obj:
-@am__fastdepCXX_TRUE@	$(CXXCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
-@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCXX_FALSE@	$(CXXCOMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
-
-.cpp.lo:
-@am__fastdepCXX_TRUE@	$(LTCXXCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCXX_FALSE@	$(LTCXXCOMPILE) -c -o $@ $<
-
-rex02-rex02.o: rex02.cpp
-@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(rex02_CXXFLAGS) $(CXXFLAGS) -MT rex02-rex02.o -MD -MP -MF $(DEPDIR)/rex02-rex02.Tpo -c -o rex02-rex02.o `test -f 'rex02.cpp' || echo '$(srcdir)/'`rex02.cpp
-@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/rex02-rex02.Tpo $(DEPDIR)/rex02-rex02.Po
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='rex02.cpp' object='rex02-rex02.o' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(rex02_CXXFLAGS) $(CXXFLAGS) -c -o rex02-rex02.o `test -f 'rex02.cpp' || echo '$(srcdir)/'`rex02.cpp
-
-rex02-rex02.obj: rex02.cpp
-@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(rex02_CXXFLAGS) $(CXXFLAGS) -MT rex02-rex02.obj -MD -MP -MF $(DEPDIR)/rex02-rex02.Tpo -c -o rex02-rex02.obj `if test -f 'rex02.cpp'; then $(CYGPATH_W) 'rex02.cpp'; else $(CYGPATH_W) '$(srcdir)/rex02.cpp'; fi`
-@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/rex02-rex02.Tpo $(DEPDIR)/rex02-rex02.Po
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='rex02.cpp' object='rex02-rex02.obj' libtool=no @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(rex02_CXXFLAGS) $(CXXFLAGS) -c -o rex02-rex02.obj `if test -f 'rex02.cpp'; then $(CYGPATH_W) 'rex02.cpp'; else $(CYGPATH_W) '$(srcdir)/rex02.cpp'; fi`
-
 mostlyclean-libtool:
 	-rm -f *.lo
 
@@ -679,6 +617,11 @@ uninstall-am: uninstall-binPROGRAMS
 	uninstall-binPROGRAMS
 
 
+#bin_PROGRAMS += rex02
+#rex02_SOURCES = rex02.cpp
+#rex02_CXXFLAGS = -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread 
+#rex02_LDFLAGS = -pthread -Wl,-Bsymbolic-functions  -lwx_gtk2ud_richtext-2.8 -lwx_gtk2ud_aui-2.8 -lwx_gtk2ud_xrc-2.8 -lwx_gtk2ud_qa-2.8 -lwx_gtk2ud_html-2.8 -lwx_gtk2ud_adv-2.8 -lwx_gtk2ud_core-2.8 -lwx_baseud_xml-2.8 -lwx_baseud_net-2.8 -lwx_baseud-2.8 
+
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT:
diff --git a/qse/samples/cmn/rex01.c b/qse/samples/cmn/rex01.c
index 4f463d27..9b30f0c4 100644
--- a/qse/samples/cmn/rex01.c
+++ b/qse/samples/cmn/rex01.c
@@ -8,6 +8,9 @@ static int rex_main (int argc, qse_char_t* argv[])
 {
 	qse_rex_t* rex;
 	qse_rex_node_t* start;
+	qse_cstr_t str;
+	qse_cstr_t matstr;
+	int n;
 
 	if (argc != 3)
 	{
@@ -32,15 +35,23 @@ static int rex_main (int argc, qse_char_t* argv[])
 		return -1;
 	}
 
-	if (qse_rex_exec (rex, 
-		argv[2], qse_strlen(argv[2]),
-		argv[2], qse_strlen(argv[2])) <= -1)
+	str.ptr = argv[2];
+	str.len = qse_strlen(argv[2]);
+
+	n = qse_rex_exec (rex, &str, &str, &matstr);
+	if (n <= -1)
 	{
 		qse_printf (QSE_T("ERROR: cannot execute - %s\n"),
 			qse_rex_geterrmsg(rex));
 		qse_rex_close (rex);
 		return -1;
 	}
+	if (n >= 1)
+	{
+		qse_printf (QSE_T("MATCH: [%.*s] beginning from char #%d\n"), 
+			(int)matstr.len, matstr.ptr,
+			(int)(matstr.ptr, matstr.ptr - str.ptr + 1));
+	}
 
 	qse_rex_close (rex);
 	return 0;