Frank Ellermann <nobody at xyzzy dot claranet dot de> wrote:
check if "foo" is a pure 639-3 subtag[...]What is a pure subtag?A pure 639-3 subtag is something where the columns "Part1" and "Part2" in iso-dis-639-3_20060421.tab are empty (or should be empty after the next synchronization).
In other words, a subtag derived from one of the 7,000 code elements in ISO/FDIS 639-3 that is not present in ISO 639-2.
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