isAscii package:gi-glib

Tests if hostname contains segments with an ASCII-compatible encoding of an Internationalized Domain Name. If this returns True, you should decode the hostname with hostnameToUnicode before displaying it to the user. Note that a hostname might contain a mix of encoded and unencoded segments, and so it is possible for hostnameIsNonAscii and hostnameIsAsciiEncoded to both return True for a name. Since: 2.22

Determines if a string is pure ASCII. A string is pure ASCII if it contains no bytes with the high bit set. Since: 2.40