Document the negated lookahead trick to emulate

[p5sagit/p5-mst-13.2.git] / sv.c

diff --git a/sv.c b/sv.c
index afd2aad..997a3a8 100644 (file)
--- a/sv.c
+++ b/sv.c
@@ -2163,7 +2163,7 @@ Perl_sv_2iv(pTHX_ register SV *sv)
                    SvIVX(sv) = -(IV)value;
                } else {
                    /* Too negative for an IV.  This is a double upgrade, but
-                      I'm assuming it will be be rare.  */
+                      I'm assuming it will be rare.  */
                    if (SvTYPE(sv) < SVt_PVNV)
                        sv_upgrade(sv, SVt_PVNV);
                    SvNOK_on(sv);
@@ -2454,7 +2454,7 @@ Perl_sv_2uv(pTHX_ register SV *sv)
                    SvIVX(sv) = -(IV)value;
                } else {
                    /* Too negative for an IV.  This is a double upgrade, but
-                      I'm assuming it will be be rare.  */
+                      I'm assuming it will be rare.  */
                    if (SvTYPE(sv) < SVt_PVNV)
                        sv_upgrade(sv, SVt_PVNV);
                    SvNOK_on(sv);
@@ -3004,8 +3004,15 @@ Perl_sv_2pv_flags(pTHX_ register SV *sv, STRLEN *lp, I32 flags)
                default:        s = "UNKNOWN";                  break;
                }
                tsv = NEWSV(0,0);
-               if (SvOBJECT(sv))
-                   Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
+               if (SvOBJECT(sv)) {
+                    HV *svs = SvSTASH(sv);
+                   Perl_sv_setpvf(
+                        aTHX_ tsv, "%s=%s",
+                        /* [20011101.072] This bandaid for C<package;>
+                           should eventually be removed. AMS 20011103 */
+                        (svs ? HvNAME(svs) : "<none>"), s
+                    );
+                }
                else
                    sv_setpv(tsv, s);
                Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
@@ -5861,7 +5868,7 @@ Perl_sv_inc(pTHX_ register SV *sv)
 #endif
        if (SvIsUV(sv)) {
            if (SvUVX(sv) == UV_MAX)
-               sv_setnv(sv, (NV)UV_MAX + 1.0);
+               sv_setnv(sv, UV_MAX_P1);
            else
                (void)SvIOK_only_UV(sv);
                ++SvUVX(sv);
@@ -5893,7 +5900,7 @@ Perl_sv_inc(pTHX_ register SV *sv)
     while (isDIGIT(*d)) d++;
     if (*d) {
 #ifdef PERL_PRESERVE_IVUV
-       /* Got to punt this an an integer if needs be, but we don't issue
+       /* Got to punt this as an integer if needs be, but we don't issue
           warnings. Probably ought to make the sv_iv_please() that does
           the conversion if possible, and silently.  */
        int numtype = grok_number(SvPVX(sv), SvCUR(sv), NULL);
@@ -6942,8 +6949,12 @@ Returns a string describing what the SV is a reference to.
 char *
 Perl_sv_reftype(pTHX_ SV *sv, int ob)
 {
-    if (ob && SvOBJECT(sv))
-       return HvNAME(SvSTASH(sv));
+    if (ob && SvOBJECT(sv)) {
+        HV *svs = SvSTASH(sv);
+        /* [20011101.072] This bandaid for C<package;> should eventually
+           be removed. AMS 20011103 */
+        return (svs ? HvNAME(svs) : "<none>");
+    }
     else {
        switch (SvTYPE(sv)) {
        case SVt_NULL:
@@ -10096,6 +10107,7 @@ perl_clone_using(PerlInterpreter *proto_perl, UV flags,
     PL_utf8_toupper    = sv_dup_inc(proto_perl->Iutf8_toupper, param);
     PL_utf8_totitle    = sv_dup_inc(proto_perl->Iutf8_totitle, param);
     PL_utf8_tolower    = sv_dup_inc(proto_perl->Iutf8_tolower, param);
+    PL_utf8_tofold     = sv_dup_inc(proto_perl->Iutf8_tofold, param);
 
     /* swatch cache */
     PL_last_swash_hv   = Nullhv;       /* reinits on demand */
@@ -10395,7 +10407,7 @@ Perl_sv_recode_to_utf8(pTHX_ SV *sv, SV *encoding)
          SPAGAIN;
          uni = POPs;
          PUTBACK;
-         s = SvPVutf8(uni, len);
+         s = SvPV(uni, len);
          if (s != SvPVX(sv)) {
               SvGROW(sv, len);
               Move(s, SvPVX(sv), len, char);