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"en_EN.UTF-8". The values read from the default locale can be modified using Options. Options provided are:
groupingis also specified.
repeat(Count), the remaining digits are grouped in groups of size Count. If the last element is a normal integer, digits further to the left are not grouped.
For example, the English locale uses
[ decimal_point('.'), thousands_sep(','), grouping([repeat(3)]) ]
Named locales exists until they are destroyed using locale_destroy/1 and they are no longer referenced. Unnamed locales are subject to (atom) garbage collection.