Man page - fcconfigappfontclear(3)
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Manual
FcConfigAppFontClear
NAMESYNOPSIS
DESCRIPTION
NAME
FcConfigAppFontClear - Remove all app fonts from font database
SYNOPSIS
#include <fontconfig/fontconfig.h>
void FcConfigAppFontClear (FcConfig * config );
DESCRIPTION
Clears the set of application-specific fonts. If config is NULL, the current configuration is used.