--- a/regexParser/node.cc	Wed Feb 03 13:11:10 2016 +0900
+++ b/regexParser/node.cc	Wed Feb 03 13:56:01 2016 +0900
@@ -9,14 +9,8 @@
             printCharacterClass(cc->left,nodeNumber,d+1);
         }
         printf("%*c",d*4, ' ');
-        for (RangeList range = cc->cond.range; range.begin != 0;) {
-           printf("[%c-%c] ",(unsigned char)range.begin,(unsigned char)range.end);
-           if (range.next != NULL) {
-                range = *range.next;
-           } else {
-                break;
-           }
-        }
+        RangeList range = cc->cond.range;
+        printf("[%c-%c] ",(unsigned char)range.begin,(unsigned char)range.end);
         printf("(%lx)\n",cc->nextState.bitContainer);
         if (cc->right) {
             printCharacterClass(cc->right,nodeNumber,d+1);

--- a/regexParser/regexParser.cc	Wed Feb 03 13:11:10 2016 +0900
+++ b/regexParser/regexParser.cc	Wed Feb 03 13:56:01 2016 +0900
@@ -45,7 +45,6 @@
     cc->cond.w.word = ri->tokenValue;
     cc->cond.w.length = ri->ptr - ri->tokenValue;
     cc->cond.range.begin = cc->cond.range.end = *ri->tokenValue;
-    cc->cond.range.next = NULL;
     return cc;
 }
 
@@ -76,8 +75,11 @@
 
  */
 CharClassPtr insertCharClass(CharClassPtr cc, unsigned long begin, unsigned long end) {
+    if (begin>end) {
+        unsigned long tmp = begin; begin = end; end = tmp;
+    }
     if (cc == NULL) {
-        createCharClassRange(begin,end,0,0,0);
+        return createCharClassRange(begin,end,0,0,0);
     }
     if (end < cc->cond.range.begin ) { // 1
         if (cc->left) {
@@ -122,38 +124,25 @@
 // <charClass> ::= '['<literal>'-'<literal>']'
 static
 NodePtr charClass(RegexInfoPtr ri) {
-    CharClassPtr cc = NEW(CharClass);
+    CharClassPtr cc = NULL;
     NodePtr n = createNode(ri,'c',cc,0,0);
-    cc->type = 'r';
-    cc->nextState.bitContainer = 0;
-    cc->left = NULL;
-    cc->right = NULL;
-    cc->stateNum = 0;
-    RangeListPtr rangeList = &cc->cond.range;
-    rangeList->begin = *ri->ptr;
-    rangeList->end = *ri->ptr;
-    rangeList->next = NULL;
+    unsigned char begin = *ri->ptr;
+    unsigned char end   = *ri->ptr;
 
     for (ri->ptr++; *ri->ptr && *ri->ptr != ']'; ri->ptr++) {
         if (*ri->ptr == '-') {
-            rangeList->end = *(ri->ptr + 1);
+            end = *(ri->ptr + 1);
+            cc = insertCharClass(cc, begin, end);
             ri->ptr++;
             continue;
+        } else {
+            cc = insertCharClass(cc, begin, end);
         }
         if (ri->ptr[0] == 0 || ri->ptr[0] == ']') break;
-        rangeList->next = NEW(RangeList);
-        rangeList = rangeList->next;
-        rangeList->begin = *ri->ptr;
-        rangeList->end = *ri->ptr;
-        rangeList->next = NULL;
+        begin = *ri->ptr;
+        end = *ri->ptr;
     }
-
-    RangeListPtr r = cc->cond.range.next;
-    cc->cond.range.next = 0;
-    for (; r; r = r->next) {
-        cc = insertCharClass(cc, r->begin, r->end);
-    }
-    cc->cond.range.next = 0;
+    n->cc = insertCharClass(cc, begin, end);
     // TODO literal support
     // merge rangeList here
     if (*ri->ptr) ri->ptr++;

--- a/regexParser/regexParser.h	Wed Feb 03 13:11:10 2016 +0900
+++ b/regexParser/regexParser.h	Wed Feb 03 13:56:01 2016 +0900
@@ -19,7 +19,6 @@
 typedef struct utf8Range {
     unsigned long begin;
     unsigned long end;
-    struct utf8Range *next; // only used in the parser.
 } RangeList , *RangeListPtr;
 
 typedef struct condition {

--- a/regexParser/subsetConstruction.cc	Wed Feb 03 13:11:10 2016 +0900
+++ b/regexParser/subsetConstruction.cc	Wed Feb 03 13:56:01 2016 +0900
@@ -15,7 +15,6 @@
     cc->type = 'r';
     cc->cond.range.begin = begin;
     cc->cond.range.end = end;
-    cc->cond.range.next = NULL;
     cc->cond.w.word = NULL;
     cc->cond.w.length = 0;
     cc->left = left;