Catch the case of filesize limits.
[p5sagit/p5-mst-13.2.git] / regcomp.c
index 76ae523..9846022 100644 (file)
--- a/regcomp.c
+++ b/regcomp.c
@@ -25,7 +25,7 @@
 #    define PERL_IN_XSUB_RE
 #  endif
 /* need access to debugger hooks */
-#  ifndef DEBUGGING
+#  if defined(PERL_EXT_RE_DEBUG) && !defined(DEBUGGING)
 #    define DEBUGGING
 #  endif
 #endif
 #  define Perl_pregcomp my_regcomp
 #  define Perl_regdump my_regdump
 #  define Perl_regprop my_regprop
-/* *These* symbols are masked to allow static link. */
 #  define Perl_pregfree my_regfree
+#  define Perl_re_intuit_string my_re_intuit_string
+/* *These* symbols are masked to allow static link. */
 #  define Perl_regnext my_regnext
 #  define Perl_save_re_context my_save_re_context
 #  define Perl_reginitcolors my_reginitcolors 
+
+#  define PERL_NO_GET_CONTEXT
 #endif 
 
 /*SUPPRESS 112*/
 #define PERL_IN_REGCOMP_C
 #include "perl.h"
 
-#ifndef PERL_IN_XSUB_RE
+#ifdef PERL_IN_XSUB_RE
+#  if defined(PERL_CAPI) || defined(PERL_OBJECT)
+#    include "XSUB.h"
+#  endif
+#else
 #  include "INTERN.h"
 #endif
 
 #define        SPSTART         0x4     /* Starts with * or +. */
 #define TRYAGAIN       0x8     /* Weeded out a declaration. */
 
+/* Length of a variant. */
+
+typedef struct scan_data_t {
+    I32 len_min;
+    I32 len_delta;
+    I32 pos_min;
+    I32 pos_delta;
+    SV *last_found;
+    I32 last_end;                      /* min value, <0 unless valid. */
+    I32 last_start_min;
+    I32 last_start_max;
+    SV **longest;                      /* Either &l_fixed, or &l_float. */
+    SV *longest_fixed;
+    I32 offset_fixed;
+    SV *longest_float;
+    I32 offset_float_min;
+    I32 offset_float_max;
+    I32 flags;
+    I32 whilem_c;
+} scan_data_t;
+
 /*
  * Forward declarations for pregcomp()'s friends.
  */
 
 static scan_data_t zero_scan_data = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-                                     0, 0, 0 };
+                                     0, 0, 0, 0 };
 
 #define SF_BEFORE_EOL          (SF_BEFORE_SEOL|SF_BEFORE_MEOL)
 #define SF_BEFORE_SEOL         0x1
@@ -162,14 +190,17 @@ static scan_data_t zero_scan_data = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 #define LOC (PL_regflags & PMf_LOCALE)
 #define FOLD (PL_regflags & PMf_FOLD)
 
+#define OOB_CHAR8              1234
+#define OOB_UTF8               123456
+#define OOB_NAMEDCLASS         -1
+
 #define CHR_SVLEN(sv) (UTF ? sv_len_utf8(sv) : SvCUR(sv))
 #define CHR_DIST(a,b) (UTF ? utf8_distance(a,b) : a - b)
 
-STATIC void
-S_clear_re(pTHX_ void *r)
-{
-    ReREFCNT_dec((regexp *)r);
-}
+/* Allow for side effects in s */
+#define REGC(c,s) STMT_START { if (!SIZE_ONLY) *(s) = (c); else (s);} STMT_END
+
+static void clear_re(pTHXo_ void *r);
 
 STATIC void
 S_scan_commit(pTHX_ scan_data_t *data)
@@ -233,7 +264,7 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
            regnode *stop = scan;
 #endif 
 
-           next = scan + (*OPERAND(scan) + 2 - 1)/sizeof(regnode) + 2;
+           next = scan + NODE_SZ_STR(scan);
            /* Skip NOTHING, merge EXACT*. */
            while (n &&
                   ( PL_regkind[(U8)OP(n)] == NOTHING || 
@@ -252,17 +283,17 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
                    n = regnext(n);
                }
                else {
-                   int oldl = *OPERAND(scan);
+                   int oldl = STR_LEN(scan);
                    regnode *nnext = regnext(n);
                    
-                   if (oldl + *OPERAND(n) > U8_MAX) 
+                   if (oldl + STR_LEN(n) > U8_MAX) 
                        break;
                    NEXT_OFF(scan) += NEXT_OFF(n);
-                   *OPERAND(scan) += *OPERAND(n);
-                   next = n + (*OPERAND(n) + 2 - 1)/sizeof(regnode) + 2;
+                   STR_LEN(scan) += STR_LEN(n);
+                   next = n + NODE_SZ_STR(n);
                    /* Now we can overwrite *n : */
-                   Move(OPERAND(n) + 1, OPERAND(scan) + oldl + 1,
-                        *OPERAND(n) + 1, char);
+                   Move(STRING(n), STRING(scan) + oldl,
+                        STR_LEN(n), char);
 #ifdef DEBUGGING
                    if (stringok)
                        stop = next - 1;
@@ -272,7 +303,7 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
            }
 #ifdef DEBUGGING
            /* Allow dumping */
-           n = scan + (*OPERAND(scan) + 2 - 1)/sizeof(regnode) + 2;
+           n = scan + NODE_SZ_STR(scan);
            while (n <= stop) {
                /* Purify reports a benign UMR here sometimes, because we
                 * don't initialize the OP() slot of a node when that node
@@ -322,6 +353,8 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
 
                    num++;
                    data_fake.flags = 0;
+                   if (data)
+                       data_fake.whilem_c = data->whilem_c;
                    next = regnext(scan);
                    scan = NEXTOPER(scan);
                    if (code != BRANCH)
@@ -340,6 +373,8 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
                        pars++;
                    if (data && (data_fake.flags & SF_HAS_EVAL))
                        data->flags |= SF_HAS_EVAL;
+                   if (data)
+                       data->whilem_c = data_fake.whilem_c;
                    if (code == SUSPEND) 
                        break;
                }
@@ -361,9 +396,9 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
            continue;
        }
        else if (OP(scan) == EXACT) {
-           I32 l = *OPERAND(scan);
+           I32 l = STR_LEN(scan);
            if (UTF) {
-               unsigned char *s = (unsigned char *)(OPERAND(scan)+1);
+               unsigned char *s = (unsigned char *)STRING(scan);
                unsigned char *e = s + l;
                I32 newl = 0;
                while (s < e) {
@@ -381,18 +416,18 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
                    data->last_start_max = is_inf
                        ? I32_MAX : data->pos_min + data->pos_delta; 
                }
-               sv_catpvn(data->last_found, (char *)(OPERAND(scan)+1), *OPERAND(scan));
+               sv_catpvn(data->last_found, STRING(scan), STR_LEN(scan));
                data->last_end = data->pos_min + l;
                data->pos_min += l; /* As in the first entry. */
                data->flags &= ~SF_BEFORE_EOL;
            }
        }
        else if (PL_regkind[(U8)OP(scan)] == EXACT) {
-           I32 l = *OPERAND(scan);
+           I32 l = STR_LEN(scan);
            if (flags & SCF_DO_SUBSTR) 
                scan_commit(data);
            if (UTF) {
-               unsigned char *s = (unsigned char *)(OPERAND(scan)+1);
+               unsigned char *s = (unsigned char *)STRING(scan);
                unsigned char *e = s + l;
                I32 newl = 0;
                while (s < e) {
@@ -405,7 +440,7 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
            if (data && (flags & SCF_DO_SUBSTR))
                data->pos_min += l;
        }
-       else if (strchr(PL_varies,OP(scan))) {
+       else if (strchr((char*)PL_varies,OP(scan))) {
            I32 mincount, maxcount, minnext, deltanext, pos_before, fl;
            regnode *oscan = scan;
            
@@ -461,7 +496,8 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
                if (ckWARN(WARN_UNSAFE) && (minnext + deltanext == 0) 
                    && !(data->flags & (SF_HAS_PAR|SF_IN_PAR))
                    && maxcount <= REG_INFTY/3) /* Complement check for big count */
-                   Perl_warner(aTHX_ WARN_UNSAFE, "Strange *+?{} on zero-length expression");
+                   Perl_warner(aTHX_ WARN_UNSAFE,
+                               "Strange *+?{} on zero-length expression");
                min += minnext * mincount;
                is_inf_internal |= (maxcount == REG_INFTY 
                                    && (minnext + deltanext) > 0
@@ -480,9 +516,9 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
 
                    /* Skip open. */
                    nxt = regnext(nxt);
-                   if (!strchr(PL_simple,OP(nxt))
+                   if (!strchr((char*)PL_simple,OP(nxt))
                        && !(PL_regkind[(U8)OP(nxt)] == EXACT
-                            && *OPERAND(nxt) == 1)) 
+                            && STR_LEN(nxt) == 1)) 
                        goto nogo;
                    nxt2 = nxt;
                    nxt = regnext(nxt);
@@ -555,6 +591,16 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
                    else
                        oscan->flags = 0;
                }
+               else if (OP(oscan) == CURLYX && data && ++data->whilem_c < 16) {
+                   /* This stays as CURLYX, and can put the count/of pair. */
+                   /* Find WHILEM (as in regexec.c) */
+                   regnode *nxt = oscan + NEXT_OFF(oscan);
+
+                   if (OP(PREVOPER(nxt)) == NOTHING) /* LONGJMP */
+                       nxt += ARG(nxt);
+                   PREVOPER(nxt)->flags = data->whilem_c
+                       | (PL_reg_whilem_seen << 4); /* On WHILEM */
+               }
                if (data && fl & (SF_HAS_PAR|SF_IN_PAR)) 
                    pars++;
                if (flags & SCF_DO_SUBSTR) {
@@ -627,7 +673,7 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
                break;
            }
        }
-       else if (strchr(PL_simple,OP(scan)) || PL_regkind[(U8)OP(scan)] == ANYUTF8) {
+       else if (strchr((char*)PL_simple,OP(scan)) || PL_regkind[(U8)OP(scan)] == ANYUTF8) {
            if (flags & SCF_DO_SUBSTR) {
                scan_commit(data);
                data->pos_min++;
@@ -646,6 +692,8 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
            regnode *nscan;
 
            data_fake.flags = 0;
+           if (data)
+               data_fake.whilem_c = data->whilem_c;
            next = regnext(scan);
            nscan = NEXTOPER(NEXTOPER(scan));
            minnext = study_chunk(&nscan, &deltanext, last, &data_fake, 0);
@@ -654,7 +702,11 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
                    FAIL("variable length lookbehind not implemented");
                }
                else if (minnext > U8_MAX) {
+#ifdef UV_IS_QUAD
+                   FAIL2("lookbehind longer than %" PERL_PRIu64 " not implemented", (UV)U8_MAX);
+#else
                    FAIL2("lookbehind longer than %d not implemented", U8_MAX);
+#endif
                }
                scan->flags = minnext;
            }
@@ -662,6 +714,8 @@ S_study_chunk(pTHX_ regnode **scanp, I32 *deltap, regnode *last, scan_data_t *da
                pars++;
            if (data && (data_fake.flags & SF_HAS_EVAL))
                data->flags |= SF_HAS_EVAL;
+           if (data)
+               data->whilem_c = data_fake.whilem_c;
        }
        else if (OP(scan) == OPEN) {
            pars++;
@@ -780,6 +834,7 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
     I32 minlen = 0;
     I32 sawplus = 0;
     I32 sawopen = 0;
+    scan_data_t data;
 
     if (exp == NULL)
        FAIL("NULL regexp argument");
@@ -791,7 +846,7 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
 
     PL_regprecomp = savepvn(exp, xend - exp);
     DEBUG_r(if (!PL_colorset) reginitcolors());
-    DEBUG_r(PerlIO_printf(Perl_debug_log, "%sCompiling%s RE `%s%*s%s'\n",
+    DEBUG_r(PerlIO_printf(Perl_debug_log, "%sCompiling REx%s `%s%*s%s'\n",
                      PL_colors[4],PL_colors[5],PL_colors[0],
                      xend - exp, PL_regprecomp, PL_colors[1]));
     PL_regflags = pm->op_pmflags;
@@ -809,7 +864,8 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
     PL_regnpar = 1;
     PL_regsize = 0L;
     PL_regcode = &PL_regdummy;
-    regc((U8)REG_MAGIC, (char*)PL_regcode);
+    PL_reg_whilem_seen = 0;
+    REGC((U8)REG_MAGIC, (char*)PL_regcode);
     if (reg(0, &flags) == NULL) {
        Safefree(PL_regprecomp);
        PL_regprecomp = Nullch;
@@ -823,6 +879,8 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
         PL_regsize += PL_extralen;
     else
        PL_extralen = 0;
+    if (PL_reg_whilem_seen > 15)
+       PL_reg_whilem_seen = 15;
 
     /* Allocate space and initialize. */
     Newc(1001, r, sizeof(regexp) + (unsigned)PL_regsize * sizeof(regnode),
@@ -850,7 +908,7 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
     PL_regcode = r->program;
     /* Store the count of eval-groups for security checks: */
     PL_regcode->next_off = ((PL_seen_evals > U16_MAX) ? U16_MAX : PL_seen_evals);
-    regc((U8)REG_MAGIC, (char*) PL_regcode++);
+    REGC((U8)REG_MAGIC, (char*) PL_regcode++);
     r->data = 0;
     if (reg(0, &flags) == NULL)
        return(NULL);
@@ -869,12 +927,11 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
        3-units-long substrs field. */
     Newz(1004, r->substrs, 1, struct reg_substr_data);
 
+    StructCopy(&zero_scan_data, &data, scan_data_t);
     if (OP(scan) != BRANCH) {  /* Only one top-level choice. */
-       scan_data_t data;
        I32 fake;
        STRLEN longest_float_length, longest_fixed_length;
 
-       StructCopy(&zero_scan_data, &data, scan_data_t);
        first = scan;
        /* Skip introductions and multiplicators >= 1. */
        while ((OP(first) == OPEN && (sawopen = 1)) ||
@@ -892,13 +949,17 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
        /* Starting-point info. */
       again:
        if (OP(first) == EXACT);        /* Empty, get anchored substr later. */
-       else if (strchr(PL_simple+4,OP(first)))
+       else if (strchr((char*)PL_simple+4,OP(first)))
            r->regstclass = first;
        else if (PL_regkind[(U8)OP(first)] == BOUND ||
                 PL_regkind[(U8)OP(first)] == NBOUND)
            r->regstclass = first;
        else if (PL_regkind[(U8)OP(first)] == BOL) {
-           r->reganch |= (OP(first) == MBOL ? ROPT_ANCH_MBOL: ROPT_ANCH_BOL);
+           r->reganch |= (OP(first) == MBOL
+                          ? ROPT_ANCH_MBOL
+                          : (OP(first) == SBOL
+                             ? ROPT_ANCH_SBOL
+                             : ROPT_ANCH_BOL));
            first = NEXTOPER(first);
            goto again;
        }
@@ -912,12 +973,21 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
            !(r->reganch & ROPT_ANCH) )
        {
            /* turn .* into ^.* with an implied $*=1 */
-           r->reganch |= ROPT_ANCH_BOL | ROPT_IMPLICIT;
+           int type = OP(NEXTOPER(first));
+
+           if (type == REG_ANY || type == ANYUTF8)
+               type = ROPT_ANCH_MBOL;
+           else
+               type = ROPT_ANCH_SBOL;
+
+           r->reganch |= type | ROPT_IMPLICIT;
            first = NEXTOPER(first);
            goto again;
        }
-       if (sawplus && (!sawopen || !PL_regsawback))
-           r->reganch |= ROPT_SKIP;    /* x+ must match 1st of run */
+       if (sawplus && (!sawopen || !PL_regsawback) 
+           && !(PL_regseen & REG_SEEN_EVAL)) /* May examine pos and $& */
+           /* x+ must match at the 1st pos of run of x's */
+           r->reganch |= ROPT_SKIP;
 
        /* Scan is after the zeroth branch, first is atomic matcher. */
        DEBUG_r(PerlIO_printf(Perl_debug_log, "first at %d\n", 
@@ -1010,6 +1080,11 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
            r->check_offset_min = data.offset_float_min;
            r->check_offset_max = data.offset_float_max;
        }
+       if (r->check_substr) {
+           r->reganch |= RE_USE_INTUIT;
+           if (SvTAIL(r->check_substr))
+               r->reganch |= RE_INTUIT_TAIL;
+       }
     }
     else {
        /* Several toplevels. Best we can is to set minlen. */
@@ -1017,7 +1092,7 @@ Perl_pregcomp(pTHX_ char *exp, char *xend, PMOP *pm)
        
        DEBUG_r(PerlIO_printf(Perl_debug_log, "\n"));
        scan = r->program + 1;
-       minlen = study_chunk(&scan, &fake, scan + PL_regsize, NULL, 0);
+       minlen = study_chunk(&scan, &fake, scan + PL_regsize, &data, 0);
        r->check_substr = r->anchored_substr = r->float_substr = Nullsv;
     }
 
@@ -1495,8 +1570,10 @@ S_regpiece(pTHX_ I32 *flagp)
                reginsert(CURLY, ret);
            }
            else {
-               PL_regnaughty += 4 + PL_regnaughty;     /* compound interest */
-               regtail(ret, reg_node(WHILEM));
+               regnode *w = reg_node(WHILEM);
+
+               w->flags = 0;
+               regtail(ret, w);
                if (!SIZE_ONLY && PL_extralen) {
                    reginsert(LONGJMP,ret);
                    reginsert(NOTHING,ret);
@@ -1507,7 +1584,8 @@ S_regpiece(pTHX_ I32 *flagp)
                    NEXT_OFF(ret) = 3;  /* Go over NOTHING to LONGJMP. */
                regtail(ret, reg_node(NOTHING));
                if (SIZE_ONLY)
-                   PL_extralen += 3;
+                   PL_reg_whilem_seen++, PL_extralen += 3;
+               PL_regnaughty += 4 + PL_regnaughty;     /* compound interest */
            }
            ret->flags = 0;
 
@@ -1702,7 +1780,7 @@ tryagain:
            PL_seen_zerolen++;          /* Do not optimize RE away */
            nextchar();
            break;
-       case 'C':
+       case 'O':
            ret = reg_node(SANY);
            *flagp |= HASWIDTH|SIMPLE;
            nextchar();
@@ -1879,8 +1957,7 @@ tryagain:
            ret = reg_node(FOLD
                          ? (LOC ? EXACTFL : EXACTF)
                          : EXACT);
-           s = (char *) OPERAND(ret);
-           regc(0, s++);               /* save spot for len */
+           s = STRING(ret);
            for (len = 0, p = PL_regcomp_parse - 1;
              len < 127 && p < PL_regxend;
              len++)
@@ -2020,7 +2097,7 @@ tryagain:
                    }
                    else {
                        len++;
-                       regc(ender, s++);
+                       REGC(ender, s++);
                    }
                    break;
                }
@@ -2030,7 +2107,7 @@ tryagain:
                    len += numlen - 1;
                }
                else
-                   regc(ender, s++);
+                   REGC(ender, s++);
            }
        loopdone:
            PL_regcomp_parse = p - 1;
@@ -2042,14 +2119,11 @@ tryagain:
            if (len == 1)
                *flagp |= SIMPLE;
            if (!SIZE_ONLY)
-               *OPERAND(ret) = len;
-           regc('\0', s++);
-           if (SIZE_ONLY) {
-               PL_regsize += (len + 2 + sizeof(regnode) - 1) / sizeof(regnode);
-           }
-           else {
-               PL_regcode += (len + 2 + sizeof(regnode) - 1) / sizeof(regnode);
-           }
+               STR_LEN(ret) = len;
+           if (SIZE_ONLY)
+               PL_regsize += STR_SZ(len);
+           else
+               PL_regcode += STR_SZ(len);
        }
        break;
     }
@@ -2074,12 +2148,17 @@ S_regwhite(pTHX_ char *p, char *e)
     return p;
 }
 
-/* parse POSIX character classes like [[:foo:]] */
-STATIC char*
+/* Parse POSIX character classes: [[:foo:]], [[=foo=]], [[.foo.]].
+   Character classes ([:foo:]) can also be negated ([:^foo:]).
+   Returns a named class id (ANYOF_XXX) if successful, -1 otherwise.
+   Equivalence classes ([=foo=]) and composites ([.foo.]) are parsed,
+   but trigger warnings because they are currently unimplemented. */
+STATIC I32
 S_regpposixcc(pTHX_ I32 value)
 {
     dTHR;
     char *posixcc = 0;
+    I32 namedclass = -1;
 
     if (value == '[' && PL_regcomp_parse + 1 < PL_regxend &&
        /* I smell either [: or [= or [. -- POSIX has been here, right? */
@@ -2095,26 +2174,120 @@ S_regpposixcc(pTHX_ I32 value)
            /* Grandfather lone [:, [=, [. */
            PL_regcomp_parse = s;
        else {
-           PL_regcomp_parse++; /* skip over the c */
-           if (*PL_regcomp_parse == ']') {
-               /* Not Implemented Yet.
-                * (POSIX Extended Character Classes, that is)
-                * The text between e.g. [: and :] would start
-                * at s + 1 and stop at regcomp_parse - 2. */
-               if (ckWARN(WARN_UNSAFE) && !SIZE_ONLY)
+           char* t = PL_regcomp_parse++; /* skip over the c */
+
+           if (*PL_regcomp_parse == ']') {
+               PL_regcomp_parse++; /* skip over the ending ] */
+               posixcc = s + 1;
+               if (*s == ':') {
+                   I32 complement = *posixcc == '^' ? *posixcc++ : 0;
+                   I32 skip = 5; /* the most common skip */
+
+                   switch (*posixcc) {
+                   case 'a':
+                       if (strnEQ(posixcc, "alnum", 5))
+                           namedclass =
+                               complement ? ANYOF_NALNUMC : ANYOF_ALNUMC;
+                       else if (strnEQ(posixcc, "alpha", 5))
+                           namedclass =
+                               complement ? ANYOF_NALPHA : ANYOF_ALPHA;
+                       else if (strnEQ(posixcc, "ascii", 5))
+                           namedclass =
+                               complement ? ANYOF_NASCII : ANYOF_ASCII;
+                       break;
+                   case 'c':
+                       if (strnEQ(posixcc, "cntrl", 5))
+                           namedclass =
+                               complement ? ANYOF_NCNTRL : ANYOF_CNTRL;
+                       break;
+                   case 'd':
+                       if (strnEQ(posixcc, "digit", 5))
+                           namedclass =
+                               complement ? ANYOF_NDIGIT : ANYOF_DIGIT;
+                       break;
+                   case 'g':
+                       if (strnEQ(posixcc, "graph", 5))
+                           namedclass =
+                               complement ? ANYOF_NGRAPH : ANYOF_GRAPH;
+                       break;
+                   case 'l':
+                       if (strnEQ(posixcc, "lower", 5))
+                           namedclass =
+                               complement ? ANYOF_NLOWER : ANYOF_LOWER;
+                       break;
+                   case 'p':
+                       if (strnEQ(posixcc, "print", 5))
+                           namedclass =
+                               complement ? ANYOF_NPRINT : ANYOF_PRINT;
+                       else if (strnEQ(posixcc, "punct", 5))
+                           namedclass =
+                               complement ? ANYOF_NPUNCT : ANYOF_PUNCT;
+                       break;
+                   case 's':
+                       if (strnEQ(posixcc, "space", 5))
+                           namedclass =
+                               complement ? ANYOF_NSPACE : ANYOF_SPACE;
+                   case 'u':
+                       if (strnEQ(posixcc, "upper", 5))
+                           namedclass =
+                               complement ? ANYOF_NUPPER : ANYOF_UPPER;
+                       break;
+                   case 'w': /* this is not POSIX, this is the Perl \w */
+                       if (strnEQ(posixcc, "word", 4)) {
+                           namedclass =
+                               complement ? ANYOF_NALNUM : ANYOF_ALNUM;
+                           skip = 4;
+                       }
+                       break;
+                   case 'x':
+                       if (strnEQ(posixcc, "xdigit", 6)) {
+                           namedclass =
+                               complement ? ANYOF_NXDIGIT : ANYOF_XDIGIT;
+                           skip = 6;
+                       }
+                       break;
+                   }
+                   if ((namedclass == OOB_NAMEDCLASS ||
+                        !(posixcc + skip + 2 < PL_regxend &&
+                          (posixcc[skip] == ':' &&
+                           posixcc[skip + 1] == ']'))))
+                       Perl_croak(aTHX_ "Character class [:%.*s:] unknown",
+                                  t - s - 1, s + 1); 
+               } else if (ckWARN(WARN_UNSAFE) && !SIZE_ONLY)
+                   /* [[=foo=]] and [[.foo.]] are still future. */
                    Perl_warner(aTHX_ WARN_UNSAFE,
-                          "Character class syntax [%c %c] is reserved for future extensions", c, c);
-               PL_regcomp_parse++; /* skip over the ending ] */
-               posixcc = s + 1;
-           }
-           else {
-               /* maternal grandfather */
+                               "Character class syntax [%c %c] is reserved for future extensions", c, c);
+           } else {
+               /* Maternal grandfather:
+                * "[:" ending in ":" but not in ":]" */
                PL_regcomp_parse = s;
            }
        }
     }
 
-    return posixcc;
+    return namedclass;
+}
+
+STATIC void
+S_checkposixcc(pTHX)
+{
+    if (ckWARN(WARN_UNSAFE) && !SIZE_ONLY &&
+       (*PL_regcomp_parse == ':' ||
+        *PL_regcomp_parse == '=' ||
+        *PL_regcomp_parse == '.')) {
+       char *s = PL_regcomp_parse;
+       char  c = *s++;
+
+       while(*s && isALNUM(*s))
+           s++;
+       if (*s && c == *s && s[1] == ']') {
+           Perl_warner(aTHX_ WARN_UNSAFE,
+                       "Character class syntax [%c %c] belongs inside character classes", c, c);
+           if (c == '=' || c == '.')
+               Perl_warner(aTHX_ WARN_UNSAFE,
+                           "Character class syntax [%c %c] is reserved for future extensions", c, c);
+       }
+    }
 }
 
 STATIC regnode *
@@ -2123,158 +2296,339 @@ S_regclass(pTHX)
     dTHR;
     register char *opnd, *s;
     register I32 value;
-    register I32 lastvalue = 1234;
+    register I32 lastvalue = OOB_CHAR8;
     register I32 range = 0;
     register regnode *ret;
     register I32 def;
     I32 numlen;
+    I32 namedclass;
 
-    s = opnd = (char *) OPERAND(PL_regcode);
+    s = opnd = MASK(PL_regcode);
     ret = reg_node(ANYOF);
-    for (value = 0; value < 33; value++)
-       regc(0, s++);
+    for (value = 0; value < ANYOF_SIZE; value++)
+       REGC(0, s++);
     if (*PL_regcomp_parse == '^') {    /* Complement of range. */
        PL_regnaughty++;
        PL_regcomp_parse++;
        if (!SIZE_ONLY)
-           *opnd |= ANYOF_INVERT;
+           ANYOF_FLAGS(opnd) |= ANYOF_INVERT;
     }
     if (!SIZE_ONLY) {
        PL_regcode += ANY_SKIP;
        if (FOLD)
-           *opnd |= ANYOF_FOLD;
+           ANYOF_FLAGS(opnd) |= ANYOF_FOLD;
        if (LOC)
-           *opnd |= ANYOF_LOCALE;
+           ANYOF_FLAGS(opnd) |= ANYOF_LOCALE;
     }
     else {
        PL_regsize += ANY_SKIP;
     }
+
+    checkposixcc();
+
     if (*PL_regcomp_parse == ']' || *PL_regcomp_parse == '-')
        goto skipcond;          /* allow 1st char to be ] or - */
     while (PL_regcomp_parse < PL_regxend && *PL_regcomp_parse != ']') {
        skipcond:
+       namedclass = OOB_NAMEDCLASS;
        value = UCHARAT(PL_regcomp_parse++);
        if (value == '[')
-           (void)regpposixcc(value); /* ignore the return value for now */
+           namedclass = regpposixcc(value);
        else if (value == '\\') {
            value = UCHARAT(PL_regcomp_parse++);
            switch (value) {
-           case 'w':
-               if (!SIZE_ONLY) {
-                   if (LOC)
-                       *opnd |= ANYOF_ALNUML;
-                   else {
-                       for (value = 0; value < 256; value++)
-                           if (isALNUM(value))
-                               ANYOF_SET(opnd, value);
-                   }
+           case 'w':   namedclass = ANYOF_ALNUM;       break;
+           case 'W':   namedclass = ANYOF_NALNUM;      break;
+           case 's':   namedclass = ANYOF_SPACE;       break;
+           case 'S':   namedclass = ANYOF_NSPACE;      break;
+           case 'd':   namedclass = ANYOF_DIGIT;       break;
+           case 'D':   namedclass = ANYOF_NDIGIT;      break;
+           case 'n':   value = '\n';                   break;
+           case 'r':   value = '\r';                   break;
+           case 't':   value = '\t';                   break;
+           case 'f':   value = '\f';                   break;
+           case 'b':   value = '\b';                   break;
+           case 'e':   value = '\033';                 break;
+           case 'a':   value = '\007';                 break;
+           case 'x':
+               value = scan_hex(PL_regcomp_parse, 2, &numlen);
+               PL_regcomp_parse += numlen;
+               break;
+           case 'c':
+               value = UCHARAT(PL_regcomp_parse++);
+               value = toCTRL(value);
+               break;
+           case '0': case '1': case '2': case '3': case '4':
+           case '5': case '6': case '7': case '8': case '9':
+               value = scan_oct(--PL_regcomp_parse, 3, &numlen);
+               PL_regcomp_parse += numlen;
+               break;
+           }
+       }
+       if (!SIZE_ONLY && namedclass > OOB_NAMEDCLASS) {
+           if (range)
+               FAIL("invalid [] range in regexp"); /* [a-\w], [a-[:word:]] */
+           switch (namedclass) {
+           case ANYOF_ALNUM:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_ALNUM);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isALNUM(value))
+                           ANYOF_BITMAP_SET(opnd, value);
                }
-               lastvalue = 1234;
-               continue;
-           case 'W':
-               if (!SIZE_ONLY) {
-                   if (LOC)
-                       *opnd |= ANYOF_NALNUML;
-                   else {
-                       for (value = 0; value < 256; value++)
-                           if (!isALNUM(value))
-                               ANYOF_SET(opnd, value);
-                   }
+               break;
+           case ANYOF_NALNUM:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NALNUM);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isALNUM(value))
+                           ANYOF_BITMAP_SET(opnd, value);
                }
-               lastvalue = 1234;
-               continue;
-           case 's':
-               if (!SIZE_ONLY) {
-                   if (LOC)
-                       *opnd |= ANYOF_SPACEL;
-                   else {
-                       for (value = 0; value < 256; value++)
-                           if (isSPACE(value))
-                               ANYOF_SET(opnd, value);
-                   }
+               break;
+           case ANYOF_SPACE:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_SPACE);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isSPACE(value))
+                           ANYOF_BITMAP_SET(opnd, value);
                }
-               lastvalue = 1234;
-               continue;
-           case 'S':
-               if (!SIZE_ONLY) {
-                   if (LOC)
-                       *opnd |= ANYOF_NSPACEL;
-                   else {
-                       for (value = 0; value < 256; value++)
-                           if (!isSPACE(value))
-                               ANYOF_SET(opnd, value);
-                   }
+               break;
+           case ANYOF_NSPACE:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NSPACE);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isSPACE(value))
+                           ANYOF_BITMAP_SET(opnd, value);
                }
-               lastvalue = 1234;
-               continue;
-           case 'd':
-               if (!SIZE_ONLY) {
+               break;
+           case ANYOF_DIGIT:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_DIGIT);
+               else {
                    for (value = '0'; value <= '9'; value++)
-                       ANYOF_SET(opnd, value);
+                       ANYOF_BITMAP_SET(opnd, value);
                }
-               lastvalue = 1234;
-               continue;
-           case 'D':
-               if (!SIZE_ONLY) {
+               break;
+           case ANYOF_NDIGIT:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NDIGIT);
+               else {
                    for (value = 0; value < '0'; value++)
-                       ANYOF_SET(opnd, value);
+                       ANYOF_BITMAP_SET(opnd, value);
                    for (value = '9' + 1; value < 256; value++)
-                       ANYOF_SET(opnd, value);
+                       ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_NALNUMC:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NALNUMC);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isALNUMC(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_ALNUMC:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_ALNUMC);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isALNUMC(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_ALPHA:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_ALPHA);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isALPHA(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_NALPHA:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NALPHA);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isALPHA(value))
+                           ANYOF_BITMAP_SET(opnd, value);
                }
-               lastvalue = 1234;
-               continue;
-           case 'n':
-               value = '\n';
                break;
-           case 'r':
-               value = '\r';
+           case ANYOF_ASCII:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_ASCII);
+               else {
+                   for (value = 0; value < 128; value++)
+                       ANYOF_BITMAP_SET(opnd, value);
+               }
                break;
-           case 't':
-               value = '\t';
+           case ANYOF_NASCII:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NASCII);
+               else {
+                   for (value = 128; value < 256; value++)
+                       ANYOF_BITMAP_SET(opnd, value);
+               }
                break;
-           case 'f':
-               value = '\f';
+           case ANYOF_CNTRL:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_CNTRL);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isCNTRL(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               lastvalue = OOB_CHAR8;
                break;
-           case 'b':
-               value = '\b';
+           case ANYOF_NCNTRL:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NCNTRL);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isCNTRL(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
                break;
-           case 'e':
-               value = '\033';
+           case ANYOF_GRAPH:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_GRAPH);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isGRAPH(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
                break;
-           case 'a':
-               value = '\007';
+           case ANYOF_NGRAPH:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NGRAPH);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isGRAPH(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
                break;
-           case 'x':
-               value = scan_hex(PL_regcomp_parse, 2, &numlen);
-               PL_regcomp_parse += numlen;
+           case ANYOF_LOWER:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_LOWER);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isLOWER(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
                break;
-           case 'c':
-               value = UCHARAT(PL_regcomp_parse++);
-               value = toCTRL(value);
+           case ANYOF_NLOWER:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NLOWER);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isLOWER(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
                break;
-           case '0': case '1': case '2': case '3': case '4':
-           case '5': case '6': case '7': case '8': case '9':
-               value = scan_oct(--PL_regcomp_parse, 3, &numlen);
-               PL_regcomp_parse += numlen;
+           case ANYOF_PRINT:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_PRINT);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isPRINT(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_NPRINT:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NPRINT);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isPRINT(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_PUNCT:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_PUNCT);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isPUNCT(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_NPUNCT:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NPUNCT);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isPUNCT(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_UPPER:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_UPPER);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isUPPER(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_NUPPER:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NUPPER);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isUPPER(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_XDIGIT:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_XDIGIT);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (isXDIGIT(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           case ANYOF_NXDIGIT:
+               if (LOC)
+                   ANYOF_CLASS_SET(opnd, ANYOF_NXDIGIT);
+               else {
+                   for (value = 0; value < 256; value++)
+                       if (!isXDIGIT(value))
+                           ANYOF_BITMAP_SET(opnd, value);
+               }
+               break;
+           default:
+               FAIL("invalid [::] class in regexp");
                break;
            }
+           if (LOC)
+               ANYOF_FLAGS(opnd) |= ANYOF_CLASS;
+           continue;
        }
        if (range) {
            if (lastvalue > value)
-               FAIL("invalid [] range in regexp");
+               FAIL("invalid [] range in regexp"); /* [b-a] */
            range = 0;
        }
        else {
            lastvalue = value;
            if (*PL_regcomp_parse == '-' && PL_regcomp_parse+1 < PL_regxend &&
-             PL_regcomp_parse[1] != ']') {
+               PL_regcomp_parse[1] != ']') {
+               if (namedclass > OOB_NAMEDCLASS)
+                   FAIL("invalid [] range in regexp"); /* [\w-a] */
                PL_regcomp_parse++;
                range = 1;
                continue;       /* do it next time */
            }
        }
+       /* now is the next time */
        if (!SIZE_ONLY) {
-#ifndef ASCIIish
+#ifndef ASCIIish /* EBCDIC, for example. */
            if ((isLOWER(lastvalue) && isLOWER(value)) ||
                (isUPPER(lastvalue) && isUPPER(value)))
            {
@@ -2282,35 +2636,36 @@ S_regclass(pTHX)
                if (isLOWER(lastvalue)) {
                    for (i = lastvalue; i <= value; i++)
                        if (isLOWER(i))
-                           ANYOF_SET(opnd, i);
+                           ANYOF_BITMAP_SET(opnd, i);
                } else {
                    for (i = lastvalue; i <= value; i++)
                        if (isUPPER(i))
-                           ANYOF_SET(opnd, i);
+                           ANYOF_BITMAP_SET(opnd, i);
                }
            }
            else
 #endif
                for ( ; lastvalue <= value; lastvalue++)
-                   ANYOF_SET(opnd, lastvalue);
+                   ANYOF_BITMAP_SET(opnd, lastvalue);
         }
-       lastvalue = value;
+       range = 0;
     }
     /* optimize case-insensitive simple patterns (e.g. /[a-z]/i) */
-    if (!SIZE_ONLY && (*opnd & (0xFF ^ ANYOF_INVERT)) == ANYOF_FOLD) {
+    if (!SIZE_ONLY &&
+       (ANYOF_FLAGS(opnd) & (ANYOF_FLAGS_ALL ^ ANYOF_INVERT)) == ANYOF_FOLD) {
        for (value = 0; value < 256; ++value) {
-           if (ANYOF_TEST(opnd, value)) {
+           if (ANYOF_BITMAP_TEST(opnd, value)) {
                I32 cf = PL_fold[value];
-               ANYOF_SET(opnd, cf);
+               ANYOF_BITMAP_SET(opnd, cf);
            }
        }
-       *opnd &= ~ANYOF_FOLD;
+       ANYOF_FLAGS(opnd) &= ~ANYOF_FOLD;
     }
     /* optimize inverted simple patterns (e.g. [^a-z]) */
-    if (!SIZE_ONLY && (*opnd & 0xFF) == ANYOF_INVERT) {
-       for (value = 0; value < 32; ++value)
-           opnd[1 + value] ^= 0xFF;
-       *opnd = 0;
+    if (!SIZE_ONLY && (ANYOF_FLAGS(opnd) & ANYOF_FLAGS_ALL) == ANYOF_INVERT) {
+       for (value = 0; value < ANYOF_BITMAP_SIZE; ++value)
+           opnd[ANYOF_BITMAP_OFFSET + value] ^= ANYOF_FLAGS_ALL;
+       ANYOF_FLAGS(opnd) = 0;
     }
     return ret;
 }
@@ -2318,16 +2673,17 @@ S_regclass(pTHX)
 STATIC regnode *
 S_regclassutf8(pTHX)
 {
+    dTHR;
     register char *opnd, *e;
     register U32 value;
-    register U32 lastvalue = 123456;
+    register U32 lastvalue = OOB_UTF8;
     register I32 range = 0;
     register regnode *ret;
     I32 numlen;
     I32 n;
     SV *listsv;
     U8 flags = 0;
-    dTHR;
+    I32 namedclass;
 
     if (*PL_regcomp_parse == '^') {    /* Complement of range. */
        PL_regnaughty++;
@@ -2343,75 +2699,29 @@ S_regclassutf8(pTHX)
        listsv = newSVpvn("# comment\n",10);
     }
 
+    checkposixcc();
+
     if (*PL_regcomp_parse == ']' || *PL_regcomp_parse == '-')
        goto skipcond;          /* allow 1st char to be ] or - */
 
     while (PL_regcomp_parse < PL_regxend && *PL_regcomp_parse != ']') {
        skipcond:
+       namedclass = OOB_NAMEDCLASS;
        value = utf8_to_uv((U8*)PL_regcomp_parse, &numlen);
        PL_regcomp_parse += numlen;
 
        if (value == '[')
-           (void)regpposixcc(value); /* ignore the return value for now */
+           namedclass = regpposixcc(value);
        else if (value == '\\') {
            value = utf8_to_uv((U8*)PL_regcomp_parse, &numlen);
            PL_regcomp_parse += numlen;
            switch (value) {
-           case 'w':
-               if (!SIZE_ONLY) {
-                   if (LOC)
-                       flags |= ANYOF_ALNUML;
-
-                   Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlnum\n");
-               }
-               lastvalue = 123456;
-               continue;
-           case 'W':
-               if (!SIZE_ONLY) {
-                   if (LOC)
-                       flags |= ANYOF_NALNUML;
-
-                   Perl_sv_catpvf(aTHX_ listsv,
-                       "-utf8::IsAlpha\n-utf8::IsDigit\n0000\t%04x\n%04x\tffff\n",
-                       '_' - 1,
-                       '_' + 1);
-               }
-               lastvalue = 123456;
-               continue;
-           case 's':
-               if (!SIZE_ONLY) {
-                   if (LOC)
-                       flags |= ANYOF_SPACEL;
-                   Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsSpace\n");
-                   if (!PL_utf8_space)
-                       is_utf8_space((U8*)" ");
-               }
-               lastvalue = 123456;
-               continue;
-           case 'S':
-               if (!SIZE_ONLY) {
-                   if (LOC)
-                       flags |= ANYOF_NSPACEL;
-                   Perl_sv_catpvf(aTHX_ listsv,
-                       "!utf8::IsSpace\n");
-                   if (!PL_utf8_space)
-                       is_utf8_space((U8*)" ");
-               }
-               lastvalue = 123456;
-               continue;
-           case 'd':
-               if (!SIZE_ONLY) {
-                   Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsDigit\n");
-               }
-               lastvalue = 123456;
-               continue;
-           case 'D':
-               if (!SIZE_ONLY) {
-                   Perl_sv_catpvf(aTHX_ listsv,
-                       "!utf8::IsDigit\n");
-               }
-               lastvalue = 123456;
-               continue;
+           case 'w':           namedclass = ANYOF_ALNUM;               break;
+           case 'W':           namedclass = ANYOF_NALNUM;              break;
+           case 's':           namedclass = ANYOF_SPACE;               break;
+           case 'S':           namedclass = ANYOF_NSPACE;              break;
+           case 'd':           namedclass = ANYOF_DIGIT;               break;
+           case 'D':           namedclass = ANYOF_NDIGIT;              break;
            case 'p':
            case 'P':
                if (*PL_regcomp_parse == '{') {
@@ -2426,41 +2736,30 @@ S_regclassutf8(pTHX)
                }
                if (!SIZE_ONLY) {
                    if (value == 'p')
-                       Perl_sv_catpvf(aTHX_ listsv, "+utf8::%.*s\n", n, PL_regcomp_parse);
+                       Perl_sv_catpvf(aTHX_ listsv,
+                                      "+utf8::%.*s\n", n, PL_regcomp_parse);
                    else
                        Perl_sv_catpvf(aTHX_ listsv,
-                           "!utf8::%.*s\n", n, PL_regcomp_parse);
+                                      "!utf8::%.*s\n", n, PL_regcomp_parse);
                }
                PL_regcomp_parse = e + 1;
-               lastvalue = 123456;
+               lastvalue = OOB_UTF8;
                continue;
-           case 'n':
-               value = '\n';
-               break;
-           case 'r':
-               value = '\r';
-               break;
-           case 't':
-               value = '\t';
-               break;
-           case 'f':
-               value = '\f';
-               break;
-           case 'b':
-               value = '\b';
-               break;
-           case 'e':
-               value = '\033';
-               break;
-           case 'a':
-               value = '\007';
-               break;
+           case 'n':           value = '\n';           break;
+           case 'r':           value = '\r';           break;
+           case 't':           value = '\t';           break;
+           case 'f':           value = '\f';           break;
+           case 'b':           value = '\b';           break;
+           case 'e':           value = '\033';         break;
+           case 'a':           value = '\007';         break;
            case 'x':
                if (*PL_regcomp_parse == '{') {
                    e = strchr(PL_regcomp_parse++, '}');
                     if (!e)
                         FAIL("Missing right brace on \\x{}");
-                   value = scan_hex(PL_regcomp_parse, e - PL_regcomp_parse, &numlen);
+                   value = scan_hex(PL_regcomp_parse,
+                                    e - PL_regcomp_parse,
+                                    &numlen);
                    PL_regcomp_parse = e + 1;
                }
                else {
@@ -2479,25 +2778,97 @@ S_regclassutf8(pTHX)
                break;
            }
        }
-       if (range) {
+       if (!SIZE_ONLY && namedclass > OOB_NAMEDCLASS) {
+           if (range)
+               FAIL("invalid [] range in regexp"); /* [a-\w], [a-[:word:]] */
+           switch (namedclass) {
+           case ANYOF_ALNUM:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsWord\n");        break;
+           case ANYOF_NALNUM:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsWord\n");        break;
+           case ANYOF_ALNUMC:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlnum\n");       break;
+           case ANYOF_NALNUMC:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsAlnum\n");       break;
+           case ANYOF_ALPHA:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsAlpha\n");       break;
+           case ANYOF_NALPHA:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsAlpha\n");       break;
+           case ANYOF_ASCII:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsASCII\n");       break;
+           case ANYOF_NASCII:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsASCII\n");       break;
+           case ANYOF_CNTRL:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsCntrl\n");       break;
+           case ANYOF_NCNTRL:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsCntrl\n");       break;
+           case ANYOF_GRAPH:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsGraph\n");       break;
+           case ANYOF_NGRAPH:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsGraph\n");       break;
+           case ANYOF_DIGIT:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsDigit\n");       break;
+           case ANYOF_NDIGIT:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsDigit\n");       break;
+           case ANYOF_LOWER:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsLower\n");       break;
+           case ANYOF_NLOWER:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsLower\n");       break;
+           case ANYOF_PRINT:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsPrint\n");       break;
+           case ANYOF_NPRINT:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsPrint\n");       break;
+           case ANYOF_PUNCT:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsPunct\n");       break;
+           case ANYOF_NPUNCT:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsPunct\n");       break;
+           case ANYOF_SPACE:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsSpace\n");       break;
+           case ANYOF_NSPACE:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsSpace\n");       break;
+           case ANYOF_UPPER:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsUpper\n");       break;
+           case ANYOF_NUPPER:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsUpper\n");       break;
+           case ANYOF_XDIGIT:
+               Perl_sv_catpvf(aTHX_ listsv, "+utf8::IsXDigit\n");      break;
+           case ANYOF_NXDIGIT:
+               Perl_sv_catpvf(aTHX_ listsv, "!utf8::IsXDigit\n");      break;
+           }
+           continue;
+       }
+        if (range) {
            if (lastvalue > value)
-               FAIL("invalid [] range in regexp");
+               FAIL("invalid [] range in regexp"); /* [b-a] */
+#ifdef UV_IS_QUAD
            if (!SIZE_ONLY)
-               Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\n", lastvalue, value);
-           lastvalue = value;
+                Perl_sv_catpvf(aTHX_ listsv, "%04" PERL_PRIx64 "\t%04" PERL_PRIx64 "\n", (UV)lastvalue, (UV)value);
+#else
+           if (!SIZE_ONLY)
+               Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\n", lastvalue, value);
+#endif
            range = 0;
        }
        else {
            lastvalue = value;
            if (*PL_regcomp_parse == '-' && PL_regcomp_parse+1 < PL_regxend &&
-             PL_regcomp_parse[1] != ']') {
+               PL_regcomp_parse[1] != ']') {
+               if (namedclass > OOB_NAMEDCLASS)
+                   FAIL("invalid [] range in regexp"); /* [\w-a] */
                PL_regcomp_parse++;
                range = 1;
                continue;       /* do it next time */
            }
-           if (!SIZE_ONLY)
-               Perl_sv_catpvf(aTHX_ listsv, "%04x\n", value);
        }
+       /* now is the next time */
+#ifdef UV_IS_QUAD
+       if (!SIZE_ONLY)
+           Perl_sv_catpvf(aTHX_ listsv, "%04" PERL_PRIx64 "\n", (UV)value);
+#else
+       if (!SIZE_ONLY)
+           Perl_sv_catpvf(aTHX_ listsv, "%04x\n", value);
+#endif
+       range = 0;
     }
 
     ret = reganode(ANYOFUTF8, 0);
@@ -2595,7 +2966,7 @@ S_reganode(pTHX_ U8 op, U32 arg)
 }
 
 /*
-- regc - emit (if appropriate) a Unicode character
+- reguni - emit (if appropriate) a Unicode character
 */
 STATIC void
 S_reguni(pTHX_ UV uv, char* s, I32* lenp)
@@ -2611,17 +2982,6 @@ S_reguni(pTHX_ UV uv, char* s, I32* lenp)
 }
 
 /*
-- regc - emit (if appropriate) a byte of code
-*/
-STATIC void
-S_regc(pTHX_ U8 b, char* s)
-{
-    dTHR;
-    if (!SIZE_ONLY)
-       *s = b;
-}
-
-/*
 - reginsert - insert an operator in front of already-emitted operand
 *
 * Means relocating the operand.
@@ -2731,7 +3091,7 @@ STATIC regnode *
 S_dumpuntil(pTHX_ regnode *start, regnode *node, regnode *last, SV* sv, I32 l)
 {
 #ifdef DEBUGGING
-    register char op = EXACT;  /* Arbitrary non-END op. */
+    register U8 op = EXACT;    /* Arbitrary non-END op. */
     register regnode *next, *onode;
 
     while (op != END && (!last || node < last)) {
@@ -2782,7 +3142,7 @@ S_dumpuntil(pTHX_ regnode *start, regnode *node, regnode *last, SV* sv, I32 l)
        }
        else if (PL_regkind[(U8)op] == EXACT) {
             /* Literal string, where present. */
-           node += ((*OPERAND(node)) + 2 + sizeof(regnode) - 1) / sizeof(regnode);
+           node += NODE_SZ_STR(node) - 1;
            node = NEXTOPER(node);
        }
        else {
@@ -2812,16 +3172,18 @@ Perl_regdump(pTHX_ regexp *r)
 
     /* Header fields of interest. */
     if (r->anchored_substr)
-       PerlIO_printf(Perl_debug_log, "anchored `%s%s%s'%s at %d ", 
+       PerlIO_printf(Perl_debug_log, "anchored `%s%.*s%s'%s at %d ", 
                      PL_colors[0],
+                     SvCUR(r->anchored_substr) - (SvTAIL(r->anchored_substr)!=0),
                      SvPVX(r->anchored_substr), 
                      PL_colors[1],
                      SvTAIL(r->anchored_substr) ? "$" : "",
                      r->anchored_offset);
     if (r->float_substr)
-       PerlIO_printf(Perl_debug_log, "floating `%s%s%s'%s at %d..%u ", 
+       PerlIO_printf(Perl_debug_log, "floating `%s%.*s%s'%s at %d..%u ", 
                      PL_colors[0],
-                     SvPVX(r->float_substr), 
+                     SvCUR(r->float_substr) - (SvTAIL(r->float_substr)!=0), 
+                     SvPVX(r->float_substr),
                      PL_colors[1],
                      SvTAIL(r->float_substr) ? "$" : "",
                      r->float_min_offset, r->float_max_offset);
@@ -2846,6 +3208,8 @@ Perl_regdump(pTHX_ regexp *r)
            PerlIO_printf(Perl_debug_log, "(BOL)");
        if (r->reganch & ROPT_ANCH_MBOL)
            PerlIO_printf(Perl_debug_log, "(MBOL)");
+       if (r->reganch & ROPT_ANCH_SBOL)
+           PerlIO_printf(Perl_debug_log, "(SBOL)");
        if (r->reganch & ROPT_ANCH_GPOS)
            PerlIO_printf(Perl_debug_log, "(GPOS)");
        PerlIO_putc(Perl_debug_log, ' ');
@@ -2881,12 +3245,15 @@ Perl_regprop(pTHX_ SV *sv, regnode *o)
     k = PL_regkind[(U8)OP(o)];
 
     if (k == EXACT)
-       Perl_sv_catpvf(aTHX_ sv, " <%s%s%s>", PL_colors[0], OPERAND(o) + 1, PL_colors[1]);
+       Perl_sv_catpvf(aTHX_ sv, " <%s%*s%s>", PL_colors[0],
+                      STR_LEN(o), STRING(o), PL_colors[1]);
     else if (k == CURLY) {
        if (OP(o) == CURLYM || OP(o) == CURLYN)
            Perl_sv_catpvf(aTHX_ sv, "[%d]", o->flags); /* Parenth number */
        Perl_sv_catpvf(aTHX_ sv, " {%d,%d}", ARG1(o), ARG2(o));
     }
+    else if (k == WHILEM && o->flags)                  /* Ordinal/of */
+       Perl_sv_catpvf(aTHX_ sv, "[%d/%d]", o->flags & 0xf, o->flags>>4);
     else if (k == REF || k == OPEN || k == CLOSE || k == GROUPP )
        Perl_sv_catpvf(aTHX_ sv, "%d", ARG(o)); /* Parenth number */
     else if (k == LOGICAL)
@@ -2896,10 +3263,38 @@ Perl_regprop(pTHX_ SV *sv, regnode *o)
 #endif /* DEBUGGING */
 }
 
+SV *
+Perl_re_intuit_string(pTHX_ regexp *prog)
+{                              /* Assume that RE_INTUIT is set */
+    DEBUG_r(
+       {   STRLEN n_a;
+           char *s = SvPV(prog->check_substr,n_a);
+
+           if (!PL_colorset) reginitcolors();
+           PerlIO_printf(Perl_debug_log,
+                     "%sUsing REx substr:%s `%s%.60s%s%s'\n",
+                     PL_colors[4],PL_colors[5],PL_colors[0],
+                     s,
+                     PL_colors[1],
+                     (strlen(s) > 60 ? "..." : ""));
+       } );
+
+    return prog->check_substr;
+}
+
 void
 Perl_pregfree(pTHX_ struct regexp *r)
 {
     dTHR;
+    DEBUG_r(if (!PL_colorset) reginitcolors());
+    DEBUG_r(PerlIO_printf(Perl_debug_log,
+                     "%sFreeing REx:%s `%s%.60s%s%s'\n",
+                     PL_colors[4],PL_colors[5],PL_colors[0],
+                     r->precomp,
+                     PL_colors[1],
+                     (strlen(r->precomp) > 60 ? "..." : "")));
+
+
     if (!r || (--r->refcnt > 0))
        return;
     if (r->precomp)
@@ -3061,3 +3456,17 @@ Perl_save_re_context(pTHX)
     SAVEPPTR(PL_reg_starttry);         /* from regexec.c */    
 #endif
 }
+
+#ifdef PERL_OBJECT
+#define NO_XSLOCKS
+#include "XSUB.h"
+#undef this
+#define this pPerl
+#endif
+
+static void
+clear_re(pTHXo_ void *r)
+{
+    ReREFCNT_dec((regexp *)r);
+}
+