Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 

NAME
FcConfigAppFontAddFile - Add font file to font database
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcConfigAppFontAddFile (FcConfig *config, const FcChar8 *file);
DESCRIPTION
Adds an application-specific font to the configuration. Returns FcFalse if the fonts cannot be added (due
to allocation failure or no fonts found). Otherwise returns FcTrue. If config is NULL, the current
configuration is used.
Fontconfig 2.12.6 05 April 2018 FcConfigAppFontAddFile(3)