Provided by: libfontconfig-doc_2.13.1-4.2ubuntu5_all 

NAME
FcLangNormalize - Normalize the language string
SYNOPSIS
#include <fontconfig/fontconfig.h> FcChar8 * FcLangNormalize (const FcChar8 *lang);
DESCRIPTION
Returns a string to make lang suitable on fontconfig.
SINCE
version 2.10.91 Fontconfig 2.13.1 23 March 2022 FcLangNormalize(3)