Returns the list of languages that the user prefers.
The list is specified by the `PANGO_LANGUAGE` or `LANGUAGE` environment variables, in order of preference. Note that this list does not necessarily include the language returned by [[email protected]_default].
When choosing language-specific resources, such as the sample text returned by [[email protected]_sample_string], you should first try the default language, followed by the languages returned by this function.
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a null-terminated array of `PangoLanguage`* |