Man page - fcconfigsubstitute(3)
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Manual
FcConfigSubstitute
NAMESYNOPSIS
DESCRIPTION
NAME
FcConfigSubstitute - Execute substitutions
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcConfigSubstitute (FcConfig * config , FcPattern * p , FcMatchKind kind );
DESCRIPTION
Calls FcConfigSubstituteWithPat setting p_pat to NULL. Returns FcFalse if the substitution cannot be performed (due to allocation failure). Otherwise returns FcTrue. If config is NULL, the current configuration is used.