/[pcre]/code/trunk/pcre_compile.c

Diff of /code/trunk/pcre_compile.c

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-revision 182 by ph10,
Wed Jun 13 15:09:54 2007 UTC
+revision 224 by ph10,
Mon Aug 20 12:58:29 2007 UTC
 Line 42 
 POSSIBILITY OF SUCH DAMAGE.
  supporting internal functions that are not used by other modules. */
+ #ifdef HAVE_CONFIG_H
+ #include <config.h>
+ #endif
  #define NLBLOCK cd             /* Block containing newline information */
  #define PSSTART start_pattern  /* Field containing processed string start */
  #define PSEND   end_pattern    /* Field containing processed string end */
  #include "pcre_internal.h"
-Line 62 
 used by pcretest. DEBUG is not defined w
+Line 65 
 used by pcretest. DEBUG is not defined w
  #define SETBIT(a,b) a[b/8] |= (1 << (b%8))
+ /* Maximum length value to check against when making sure that the integer that
+ holds the compiled pattern length does not overflow. We make it a bit less than
+ INT_MAX to allow for adding in group terminating bytes, so that we don't have
+ to check them every time. */
+ #define OFLOW_MAX (INT_MAX - 20)
  /*************************************************
  *      Code parameters and static tables         *
-Line 120 
 static const short int escapes[] = {
+Line 130 
 static const short int escapes[] = {
  /*  B8 */     0,     0,      0,       0,      0,   ']',    '=',    '-',
  /*  C0 */   '{',-ESC_A, -ESC_B,  -ESC_C, -ESC_D,-ESC_E,      0, -ESC_G,
  /*  C8 */-ESC_H,     0,      0,       0,      0,     0,      0,      0,
- /*  D0 */   '}',     0,      0,       0,      0,     0,      0, -ESC_P,
+ /*  D0 */   '}',     0, -ESC_K,       0,      0,     0,      0, -ESC_P,
  /*  D8 */-ESC_Q,-ESC_R,      0,       0,      0,     0,      0,      0,
  /*  E0 */  '\\',     0, -ESC_S,       0,      0,-ESC_V, -ESC_W, -ESC_X,
  /*  E8 */     0,-ESC_Z,      0,       0,      0,     0,      0,      0,
-Line 130 
 static const short int escapes[] = {
+Line 140 
 static const short int escapes[] = {
  #endif
+ /* Table of special "verbs" like (*PRUNE) */
+ typedef struct verbitem {
+   const char *name;
+   int   len;
+   int   op;
+ } verbitem;
+ static verbitem verbs[] = {
+   { "ACCEPT", 6, OP_ACCEPT },
+   { "COMMIT", 6, OP_COMMIT },
+   { "F",      1, OP_FAIL },
+   { "FAIL",   4, OP_FAIL },
+   { "PRUNE",  5, OP_PRUNE },
+   { "SKIP",   4, OP_SKIP  },
+   { "THEN",   4, OP_THEN  }
+ };
+ static int verbcount = sizeof(verbs)/sizeof(verbitem);
  /* Tables of names of POSIX character classes and their lengths. The list is
  terminated by a zero length entry. The first three must be alpha, lower, upper,
  as this is assumed for handling case independence. */
-Line 203 
 static const char *error_texts[] = {
+Line 234 
 static const char *error_texts[] = {
    "missing ) after comment",
    "parentheses nested too deeply",  /** DEAD **/
    /* 20 */
-   "regular expression too large",
+   "regular expression is too large",
    "failed to get memory",
    "unmatched parentheses",
    "internal error: code overflow",
-Line 239 
 static const char *error_texts[] = {
+Line 270 
 static const char *error_texts[] = {
    "subpattern name is too long (maximum " XSTRING(MAX_NAME_SIZE) " characters)",
    "too many named subpatterns (maximum " XSTRING(MAX_NAME_COUNT) ")",
    /* 50 */
-   "repeated subpattern is too long",
+   "repeated subpattern is too long",    /** DEAD **/
    "octal value is greater than \\377 (not in UTF-8 mode)",
    "internal error: overran compiling workspace",
    "internal error: previously-checked referenced subpattern not found",
-Line 248 
 static const char *error_texts[] = {
+Line 279 
 static const char *error_texts[] = {
    "repeating a DEFINE group is not allowed",
    "inconsistent NEWLINE options",
    "\\g is not followed by a braced name or an optionally braced non-zero number",
-   "(?+ or (?- or (?(+ or (?(- must be followed by a non-zero number"
+   "(?+ or (?- or (?(+ or (?(- must be followed by a non-zero number",
+   "(*VERB) with an argument is not supported",
+   /* 60 */
+   "(*VERB) not recognized",
+   "number is too big"
  };
-Line 405 
 Arguments:
+Line 440 
 Arguments:
  Returns:         zero or positive => a data character
                   negative => a special escape sequence
-                  on error, errorptr is set
+                  on error, errorcodeptr is set
  */
  static int
-Line 490 
 else
+Line 525 
 else
      while ((digitab[ptr[1]] & ctype_digit) != 0)
        c = c * 10 + *(++ptr) - '0';
+     if (c < 0)
+       {
+       *errorcodeptr = ERR61;
+       break;
+       }
      if (c == 0 || (braced && *(++ptr) != '}'))
        {
        *errorcodeptr = ERR57;
-       return 0;
+       break;
        }
      if (negated)
-Line 501 
 else
+Line 542 
 else
        if (c > bracount)
          {
          *errorcodeptr = ERR15;
-         return 0;
+         break;
          }
        c = bracount - (c - 1);
        }
-Line 530 
 else
+Line 571 
 else
        c -= '0';
        while ((digitab[ptr[1]] & ctype_digit) != 0)
          c = c * 10 + *(++ptr) - '0';
+       if (c < 0)
+         {
+         *errorcodeptr = ERR61;
+         break;
+         }
        if (c < 10 || c <= bracount)
          {
          c = -(ESC_REF + c);
-Line 625 
 else
+Line 671 
 else
      if (c == 0)
        {
        *errorcodeptr = ERR2;
-       return 0;
+       break;
        }
  #ifndef EBCDIC  /* ASCII coding */
-Line 701 
 if (c == '{')
+Line 747 
 if (c == '{')
      *negptr = TRUE;
      ptr++;
      }
-   for (i = 0; i < sizeof(name) - 1; i++)
+   for (i = 0; i < (int)sizeof(name) - 1; i++)
      {
      c = *(++ptr);
      if (c == 0) goto ERROR_RETURN;
-Line 904 
 for (; *ptr != 0; ptr++)
+Line 950 
 for (; *ptr != 0; ptr++)
      {
      while (*(++ptr) != ']')
        {
+       if (*ptr == 0) return -1;
        if (*ptr == '\\')
          {
          if (*(++ptr) == 0) return -1;
-Line 931 
 for (; *ptr != 0; ptr++)
+Line 978 
 for (; *ptr != 0; ptr++)
    /* An opening parens must now be a real metacharacter */
    if (*ptr != '(') continue;
-   if (ptr[1] != '?')
+   if (ptr[1] != '?' && ptr[1] != '*')
      {
      count++;
      if (name == NULL && count == lorn) return count;
-Line 1059 
 for (;;)
+Line 1106 
 for (;;)
    {
    int d;
    register int op = *cc;
    switch (op)
      {
      case OP_CBRA:
-Line 1148 
 for (;;)
+Line 1194 
 for (;;)
      case OP_TYPEEXACT:
      branchlength += GET2(cc,1);
+     if (cc[3] == OP_PROP || cc[3] == OP_NOTPROP) cc += 2;
      cc += 4;
      break;
-Line 1256 
 for (;;)
+Line 1303 
 for (;;)
      code += _pcre_OP_lengths[c];
      }
-   /* In UTF-8 mode, opcodes that are followed by a character may be followed by
+   /* Otherwise, we can get the item's length from the table, except that for
-   a multi-byte character. The length in the table is a minimum, so we have to
+   repeated character types, we have to test for \p and \P, which have an extra
-   arrange to skip the extra bytes. */
+   two bytes of parameters. */
    else
      {
+     switch(c)
+       {
+       case OP_TYPESTAR:
+       case OP_TYPEMINSTAR:
+       case OP_TYPEPLUS:
+       case OP_TYPEMINPLUS:
+       case OP_TYPEQUERY:
+       case OP_TYPEMINQUERY:
+       case OP_TYPEPOSSTAR:
+       case OP_TYPEPOSPLUS:
+       case OP_TYPEPOSQUERY:
+       if (code[1] == OP_PROP || code[1] == OP_NOTPROP) code += 2;
+       break;
+       case OP_TYPEUPTO:
+       case OP_TYPEMINUPTO:
+       case OP_TYPEEXACT:
+       case OP_TYPEPOSUPTO:
+       if (code[3] == OP_PROP || code[3] == OP_NOTPROP) code += 2;
+       break;
+       }
+     /* Add in the fixed length from the table */
      code += _pcre_OP_lengths[c];
+   /* In UTF-8 mode, opcodes that are followed by a character may be followed by
+   a multi-byte character. The length in the table is a minimum, so we have to
+   arrange to skip the extra bytes. */
  #ifdef SUPPORT_UTF8
      if (utf8) switch(c)
        {
-Line 1320 
 for (;;)
+Line 1396 
 for (;;)
    if (c == OP_XCLASS) code += GET(code, 1);
-   /* Otherwise, we get the item's length from the table. In UTF-8 mode, opcodes
+   /* Otherwise, we can get the item's length from the table, except that for
-   that are followed by a character may be followed by a multi-byte character.
+   repeated character types, we have to test for \p and \P, which have an extra
-   The length in the table is a minimum, so we have to arrange to skip the extra
+   two bytes of parameters. */
-   bytes. */
    else
      {
+     switch(c)
+       {
+       case OP_TYPESTAR:
+       case OP_TYPEMINSTAR:
+       case OP_TYPEPLUS:
+       case OP_TYPEMINPLUS:
+       case OP_TYPEQUERY:
+       case OP_TYPEMINQUERY:
+       case OP_TYPEPOSSTAR:
+       case OP_TYPEPOSPLUS:
+       case OP_TYPEPOSQUERY:
+       if (code[1] == OP_PROP || code[1] == OP_NOTPROP) code += 2;
+       break;
+       case OP_TYPEPOSUPTO:
+       case OP_TYPEUPTO:
+       case OP_TYPEMINUPTO:
+       case OP_TYPEEXACT:
+       if (code[3] == OP_PROP || code[3] == OP_NOTPROP) code += 2;
+       break;
+       }
+     /* Add in the fixed length from the table */
      code += _pcre_OP_lengths[c];
+     /* In UTF-8 mode, opcodes that are followed by a character may be followed
+     by a multi-byte character. The length in the table is a minimum, so we have
+     to arrange to skip the extra bytes. */
  #ifdef SUPPORT_UTF8
      if (utf8) switch(c)
        {
-Line 1399 
 for (code = first_significant_code(code
+Line 1503 
 for (code = first_significant_code(code
    /* For other groups, scan the branches. */
-   if (c == OP_BRA || c == OP_CBRA || c == OP_ONCE)
+   if (c == OP_BRA || c == OP_CBRA || c == OP_ONCE || c == OP_COND)
      {
      BOOL empty_branch;
      if (GET(code, 1) == 0) return TRUE;    /* Hit unclosed bracket */
-Line 1423 
 for (code = first_significant_code(code
+Line 1527 
 for (code = first_significant_code(code
    switch (c)
      {
-     /* Check for quantifiers after a class */
+     /* Check for quantifiers after a class. XCLASS is used for classes that
+     cannot be represented just by a bit map. This includes negated single
+     high-valued characters. The length in _pcre_OP_lengths[] is zero; the
+     actual length is stored in the compiled code, so we must update "code"
+     here. */
  #ifdef SUPPORT_UTF8
      case OP_XCLASS:
-     ccode = code + GET(code, 1);
+     ccode = code += GET(code, 1);
      goto CHECK_CLASS_REPEAT;
  #endif
-Line 1488 
 for (code = first_significant_code(code
+Line 1596 
 for (code = first_significant_code(code
      case OP_TYPEPOSPLUS:
      case OP_TYPEEXACT:
      return FALSE;
+     /* These are going to continue, as they may be empty, but we have to
+     fudge the length for the \p and \P cases. */
+     case OP_TYPESTAR:
+     case OP_TYPEMINSTAR:
+     case OP_TYPEPOSSTAR:
+     case OP_TYPEQUERY:
+     case OP_TYPEMINQUERY:
+     case OP_TYPEPOSQUERY:
+     if (code[1] == OP_PROP || code[1] == OP_NOTPROP) code += 2;
+     break;
+     /* Same for these */
+     case OP_TYPEUPTO:
+     case OP_TYPEMINUPTO:
+     case OP_TYPEPOSUPTO:
+     if (code[3] == OP_PROP || code[3] == OP_NOTPROP) code += 2;
+     break;
      /* End of branch */
-Line 1651 
 adjust_recurse(uschar *group, int adjust
+Line 1779 
 adjust_recurse(uschar *group, int adjust
    uschar *save_hwm)
  {
  uschar *ptr = group;
  while ((ptr = (uschar *)find_recurse(ptr, utf8)) != NULL)
    {
    int offset;
-Line 2255 
 for (;; ptr++)
+Line 2384 
 for (;; ptr++)
      */
      if (code < last_code) code = last_code;
+     /* Paranoid check for integer overflow */
+     if (OFLOW_MAX - *lengthptr < code - last_code)
+       {
+       *errorcodeptr = ERR20;
+       goto FAILED;
+       }
      *lengthptr += code - last_code;
      DPRINTF(("length=%d added %d c=%c\n", *lengthptr, code - last_code, c));
-Line 2367 
 for (;; ptr++)
+Line 2505 
 for (;; ptr++)
      *ptrptr = ptr;
      if (lengthptr != NULL)
        {
+       if (OFLOW_MAX - *lengthptr < code - last_code)
+         {
+         *errorcodeptr = ERR20;
+         goto FAILED;
+         }
        *lengthptr += code - last_code;   /* To include callout length */
        DPRINTF((">> end branch\n"));
        }
-Line 2429 
 for (;; ptr++)
+Line 2572 
 for (;; ptr++)
        goto FAILED;
        }
-     /* If the first character is '^', set the negation flag and skip it. */
+     /* If the first character is '^', set the negation flag and skip it. Also,
+     if the first few characters (either before or after ^) are \Q\E or \E we
+     skip them too. This makes for compatibility with Perl. */
-     if ((c = *(++ptr)) == '^')
+     negate_class = FALSE;
+     for (;;)
        {
-       negate_class = TRUE;
        c = *(++ptr);
-       }
+       if (c == '\\')
-     else
+         {
-       {
+         if (ptr[1] == 'E') ptr++;
-       negate_class = FALSE;
+           else if (strncmp((const char *)ptr+1, "Q\\E", 3) == 0) ptr += 3;
+             else break;
+         }
+       else if (!negate_class && c == '^')
+         negate_class = TRUE;
+       else break;
        }
      /* Keep a count of chars with values < 256 so that we can optimize the case
-Line 2579 
 for (;; ptr++)
+Line 2729 
 for (;; ptr++)
        of the specials, which just set a flag. The sequence \b is a special
        case. Inside a class (and only there) it is treated as backspace.
        Elsewhere it marks a word boundary. Other escapes have preset maps ready
-       to or into the one we are building. We assume they have more than one
+       to 'or' into the one we are building. We assume they have more than one
        character in them, so set class_charcount bigger than one. */
        if (c == '\\')
-Line 2599 
 for (;; ptr++)
+Line 2749 
 for (;; ptr++)
            else inescq = TRUE;
            continue;
            }
+         else if (-c == ESC_E) continue;  /* Ignore orphan \E */
          if (c < 0)
            {
-Line 3046 
 for (;; ptr++)
+Line 3197 
 for (;; ptr++)
        }
      /* If class_charcount is 1, we saw precisely one character whose value is
-     less than 256. In non-UTF-8 mode we can always optimize. In UTF-8 mode, we
+     less than 256. As long as there were no characters >= 128 and there was no
-     can optimize the negative case only if there were no characters >= 128
+     use of \p or \P, in other words, no use of any XCLASS features, we can
-     because OP_NOT and the related opcodes like OP_NOTSTAR operate on
+     optimize.
-     single-bytes only. This is an historical hangover. Maybe one day we can
-     tidy these opcodes to handle multi-byte characters.
+     In UTF-8 mode, we can optimize the negative case only if there were no
+     characters >= 128 because OP_NOT and the related opcodes like OP_NOTSTAR
+     operate on single-bytes only. This is an historical hangover. Maybe one day
+     we can tidy these opcodes to handle multi-byte characters.
      The optimization throws away the bit map. We turn the item into a
 -character OP_CHAR[NC] if it's positive, or OP_NOT if it's negative. Note
-Line 3060 
 for (;; ptr++)
+Line 3214 
 for (;; ptr++)
      reqbyte, save the previous value for reinstating. */
  #ifdef SUPPORT_UTF8
-     if (class_charcount == 1 &&
+     if (class_charcount == 1 && !class_utf8 &&
-           (!utf8 ||
+       (!utf8 || !negate_class || class_lastchar < 128))
-           (!class_utf8 && (!negate_class || class_lastchar < 128))))
  #else
      if (class_charcount == 1)
  #endif
-Line 3521 
 for (;; ptr++)
+Line 3673 
 for (;; ptr++)
          goto FAILED;
          }
-       /* This is a paranoid check to stop integer overflow later on */
-       if (len > MAX_DUPLENGTH)
-         {
-         *errorcodeptr = ERR50;
-         goto FAILED;
-         }
        /* If the maximum repeat count is unlimited, find the end of the bracket
        by scanning through from the start, and compute the offset back to it
        from the current code pointer. There may be an OP_OPT setting following
-Line 3617 
 for (;; ptr++)
+Line 3761 
 for (;; ptr++)
          if (repeat_min > 1)
            {
            /* In the pre-compile phase, we don't actually do the replication. We
-           just adjust the length as if we had. */
+           just adjust the length as if we had. Do some paranoid checks for
+           potential integer overflow. */
            if (lengthptr != NULL)
-             *lengthptr += (repeat_min - 1)*length_prevgroup;
+             {
+             int delta = (repeat_min - 1)*length_prevgroup;
+             if ((double)(repeat_min - 1)*(double)length_prevgroup >
+                                                             (double)INT_MAX ||
+                 OFLOW_MAX - *lengthptr < delta)
+               {
+               *errorcodeptr = ERR20;
+               goto FAILED;
+               }
+             *lengthptr += delta;
+             }
            /* This is compiling for real */
-Line 3658 
 for (;; ptr++)
+Line 3813 
 for (;; ptr++)
          /* In the pre-compile phase, we don't actually do the replication. We
          just adjust the length as if we had. For each repetition we must add 1
          to the length for BRAZERO and for all but the last repetition we must
-         add 2 + 2*LINKSIZE to allow for the nesting that occurs. */
+         add 2 + 2*LINKSIZE to allow for the nesting that occurs. Do some
+         paranoid checks to avoid integer overflow. */
          if (lengthptr != NULL && repeat_max > 0)
-           *lengthptr += repeat_max * (length_prevgroup + 1 + 2 + 2*LINK_SIZE) -
+           {
-- 2*LINK_SIZE;  /* Last one doesn't nest */
+           int delta = repeat_max * (length_prevgroup + 1 + 2 + 2*LINK_SIZE) -
+- 2*LINK_SIZE;   /* Last one doesn't nest */
+           if ((double)repeat_max *
+                 (double)(length_prevgroup + 1 + 2 + 2*LINK_SIZE)
+                   > (double)INT_MAX ||
+               OFLOW_MAX - *lengthptr < delta)
+             {
+             *errorcodeptr = ERR20;
+             goto FAILED;
+             }
+           *lengthptr += delta;
+           }
          /* This is compiling for real */
-Line 3814 
 for (;; ptr++)
+Line 3981 
 for (;; ptr++)
      /* ===================================================================*/
      /* Start of nested parenthesized sub-expression, or comment or lookahead or
      lookbehind or option setting or condition or all the other extended
-     parenthesis forms. First deal with the specials; all are introduced by ?,
+     parenthesis forms.  */
-     and the appearance of any of them means that this is not a capturing
-     group. */
      case '(':
      newoptions = options;
-Line 3825 
 for (;; ptr++)
+Line 3990 
 for (;; ptr++)
      save_hwm = cd->hwm;
      reset_bracount = FALSE;
-     if (*(++ptr) == '?')
+     /* First deal with various "verbs" that can be introduced by '*'. */
+     if (*(++ptr) == '*' && (cd->ctypes[ptr[1]] & ctype_letter) != 0)
+       {
+       int i, namelen;
+       const uschar *name = ++ptr;
+       previous = NULL;
+       while ((cd->ctypes[*++ptr] & ctype_letter) != 0);
+       if (*ptr == ':')
+         {
+         *errorcodeptr = ERR59;   /* Not supported */
+         goto FAILED;
+         }
+       if (*ptr != ')')
+         {
+         *errorcodeptr = ERR60;
+         goto FAILED;
+         }
+       namelen = ptr - name;
+       for (i = 0; i < verbcount; i++)
+         {
+         if (namelen == verbs[i].len &&
+             strncmp((char *)name, verbs[i].name, namelen) == 0)
+           {
+           *code = verbs[i].op;
+           if (*code++ == OP_ACCEPT) cd->had_accept = TRUE;
+           break;
+           }
+         }
+       if (i < verbcount) continue;
+       *errorcodeptr = ERR60;
+       goto FAILED;
+       }
+     /* Deal with the extended parentheses; all are introduced by '?', and the
+     appearance of any of them means that this is not a capturing group. */
+     else if (*ptr == '?')
        {
        int i, set, unset, namelen;
        int *optset;
-Line 4067 
 for (;; ptr++)
+Line 4269 
 for (;; ptr++)
          /* ------------------------------------------------------------ */
          case '!':                 /* Negative lookahead */
-         bravalue = OP_ASSERT_NOT;
          ptr++;
+         if (*ptr == ')')          /* Optimize (?!) */
+           {
+           *code++ = OP_FAIL;
+           previous = NULL;
+           continue;
+           }
+         bravalue = OP_ASSERT_NOT;
          break;
-Line 4617 
 for (;; ptr++)
+Line 4825 
 for (;; ptr++)
        goto FAILED;
        }
-     /* In the pre-compile phase, update the length by the length of the nested
+     /* In the pre-compile phase, update the length by the length of the group,
-     group, less the brackets at either end. Then reduce the compiled code to
+     less the brackets at either end. Then reduce the compiled code to just a
-     just the brackets so that it doesn't use much memory if it is duplicated by
+     set of non-capturing brackets so that it doesn't use much memory if it is
-     a quantifier. */
+     duplicated by a quantifier.*/
      if (lengthptr != NULL)
        {
+       if (OFLOW_MAX - *lengthptr < length_prevgroup - 2 - 2*LINK_SIZE)
+         {
+         *errorcodeptr = ERR20;
+         goto FAILED;
+         }
        *lengthptr += length_prevgroup - 2 - 2*LINK_SIZE;
-       code++;
+       *code++ = OP_BRA;
        PUTINC(code, 0, 1 + LINK_SIZE);
        *code++ = OP_KET;
        PUTINC(code, 0, 1 + LINK_SIZE);
+       break;    /* No need to waste time with special character handling */
        }
      /* Otherwise update the main code pointer to the end of the group. */
-     else code = tempcode;
+     code = tempcode;
      /* For a DEFINE group, required and first character settings are not
      relevant. */
-Line 5119 
 for (;;)
+Line 5333 
 for (;;)
      *ptrptr = ptr;
      *firstbyteptr = firstbyte;
      *reqbyteptr = reqbyte;
-     if (lengthptr != NULL) *lengthptr += length;
+     if (lengthptr != NULL)
+       {
+       if (OFLOW_MAX - *lengthptr < length)
+         {
+         *errorcodeptr = ERR20;
+         return FALSE;
+         }
+       *lengthptr += length;
+       }
      return TRUE;
      }
-Line 5647 
 cd->start_code = codestart;
+Line 5869 
 cd->start_code = codestart;
  cd->hwm = cworkspace;
  cd->req_varyopt = 0;
  cd->nopartial = FALSE;
+ cd->had_accept = FALSE;
  /* Set up a starting, non-extracting bracket, then compile the expression. On
  error, errorcode will be set non-zero, so we don't need to look at the result
-Line 5661 
 re->top_bracket = cd->bracount;
+Line 5884 
 re->top_bracket = cd->bracount;
  re->top_backref = cd->top_backref;
  if (cd->nopartial) re->options |= PCRE_NOPARTIAL;
+ if (cd->had_accept) reqbyte = -1;   /* Must disable after (*ACCEPT) */
  /* If not reached end of pattern on success, there's an excess bracket. */

 Legend:



Removed from v.182
 


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Added in v.224
 Legend:



Removed from v.182
 


changed lines


 
Added in v.224
-Removed from v.182
+Added in v.224

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