Provided by: libfontconfig-doc_2.13.1-4.2ubuntu5_all 

NAME
FcCharSetAddChar - Add a character to a charset
SYNOPSIS
#include <fontconfig/fontconfig.h> FcBool FcCharSetAddChar (FcCharSet *fcs, FcChar32 ucs4);
DESCRIPTION
FcCharSetAddChar adds a single Unicode char to the set, returning FcFalse on failure, either as a result of a constant set or from running out of memory. Fontconfig 2.13.1 23 March 2022 FcCharSetAddChar(3)