Provided by: libfontconfig-doc_2.15.0-2.2ubuntu1_all 

NAME
FcCharSetSubtractCount - Subtract and count charsets
SYNOPSIS
#include <fontconfig/fontconfig.h> FcChar32 FcCharSetSubtractCount (const FcCharSet *a, const FcCharSet *b);
DESCRIPTION
Returns the number of chars that are in a but not in b. Fontconfig 2.15.0 23 March 2025 FcCharSetSubtractCount(3)