p |void |sv_usepvn |SV* sv|char* ptr|STRLEN len
p |void |sv_vcatpvfn |SV* sv|const char* pat|STRLEN patlen \
|va_list* args|SV** svargs|I32 svmax \
- |bool *used_locale
+ |bool *maybe_tainted
p |void |sv_vsetpvfn |SV* sv|const char* pat|STRLEN patlen \
|va_list* args|SV** svargs|I32 svmax \
- |bool *used_locale
+ |bool *maybe_tainted
p |SV* |swash_init |char* pkg|char* name|SV* listsv \
|I32 minbits|I32 none
p |UV |swash_fetch |SV *sv|U8 *ptr