GNU gettext utilities: Format Type API

From Get docs
Gettext/docs/latest/Format-Type-API


9.13.7 Format Type API

Function
const char * const * po_format_list (void)
Returns a NULL terminated array of the supported format types.
Function
const char * po_format_pretty_name (const char *format_type)
Returns the pretty name associated with format_type. For example, it returns “C#” when format_type is “csharp_format”. Return NULL if format_type is not a supported format type.