FcConfigSetCurrent (3) - Linux Manuals
FcConfigSetCurrent: Set configuration as default
NAME
FcConfigSetCurrent - Set configuration as default
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcConfigSetCurrent (FcConfig *config);
DESCRIPTION
Sets the current default configuration to config. Implicitly calls FcConfigBuildFonts if necessary, and FcConfigReference() to inrease the reference count in config since 2.12.0, returning FcFalse if that call fails.