gettext: Format Type API

 
 9.13.7 Format Type API
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  -- 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.