Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 

NAME
FcGetDefaultLangs - Get the default languages list
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcStrSet * FcGetDefaultLangs (void);
DESCRIPTION
Returns a string set of the default languages according to the environment variables on the system. This
function looks for them in order of FC_LANG, LC_ALL, LC_CTYPE and LANG then. If there are no valid
values in those environment variables, "en" will be set as fallback.
SINCE
version 2.9.91
Fontconfig 2.12.6 05 April 2018 FcGetDefaultLangs(3)