This is a problem with glibc (it's also a violation of the C standard, since isxdigit is explicitly not affected by the current locale). Other C libraries don'

This is a problem with glibc (it's also a violation of the C standard, since isxdigit is explicitly not affected by the current locale). Other C libraries don't have this problem. http://git.musl-libc.org/cgit/musl/plain/src/ctype/isxdigit.c?id=6582baa752a8facb2c8a7b5b3dcf67331429cdc1 http://git.musl-libc.org/cgit/musl/plain/src/ctype/isxdigit....