FcCharSetDelChar (3) - Linux Manuals
FcCharSetDelChar: Add a character to a charset
NAME
FcCharSetDelChar - Add a character to a charset
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcCharSetDelChar (FcCharSet *fcs, FcChar32 ucs4);
DESCRIPTION
FcCharSetDelChar deletes a single Unicode char from the set, returning FcFalse on failure, either as a result of a constant set or from running out of memory.
SINCE
version 2.9.0