PERL_CALLCONV UV Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr, bool do_utf8);
PERL_CALLCONV void Perl_taint_env(pTHX);
PERL_CALLCONV void Perl_taint_proper(pTHX_ const char* f, const char* s);
+PERL_CALLCONV UV Perl_to_utf8_case(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp, SV **swash, char *normal, char *special);
PERL_CALLCONV UV Perl_to_utf8_lower(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp);
PERL_CALLCONV UV Perl_to_utf8_upper(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp);
PERL_CALLCONV UV Perl_to_utf8_title(pTHX_ U8 *p, U8* ustrp, STRLEN *lenp);
PERL_CALLCONV void Perl_sv_usepvn_mg(pTHX_ SV *sv, char *ptr, STRLEN len);
PERL_CALLCONV MGVTBL* Perl_get_vtbl(pTHX_ int vtbl_id);
PERL_CALLCONV char* Perl_pv_display(pTHX_ SV *dsv, char *pv, STRLEN cur, STRLEN len, STRLEN pvlim);
-PERL_CALLCONV char* Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim);
+PERL_CALLCONV char* Perl_pv_uni_display(pTHX_ SV *dsv, U8 *spv, STRLEN len, STRLEN pvlim, UV flags);
+PERL_CALLCONV char* Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags);
PERL_CALLCONV void Perl_dump_indent(pTHX_ I32 level, PerlIO *file, const char* pat, ...)
#ifdef CHECK_FORMAT
__attribute__((format(printf,pTHX_3,pTHX_4)))