Looks up the Unicode script for @iso15924. ISO 15924 assigns four-letter
codes to scripts. For example, the code for Arabic is 'Arab'.
This function accepts four letter codes encoded as a @guint32 in a
big-endian fashion. That is, the code expected for Arabic is
0x41726162 (0x41 is ASCII code for 'A', 0x72 is ASCII code for 'r', etc).
Return: the Unicode script for @iso15924, or
of %G_UNICODE_SCRIPT_INVALID_CODE if @iso15924 is zero and
%G_UNICODE_SCRIPT_UNKNOWN if @iso15924 is unknown.
Looks up the Unicode script for @iso15924. ISO 15924 assigns four-letter codes to scripts. For example, the code for Arabic is 'Arab'. This function accepts four letter codes encoded as a @guint32 in a big-endian fashion. That is, the code expected for Arabic is 0x41726162 (0x41 is ASCII code for 'A', 0x72 is ASCII code for 'r', etc).
See Codes for the representation of names of scripts
for details.