Provided by: libfontconfig-doc_2.15.0-2.2ubuntu1_all 

NAME
FcStrSetAddFilename - add a filename to a string set
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcStrSetAddFilename (FcStrSet *set, const FcChar8 *s);
DESCRIPTION
Adds a copy s to set, The copy is created with FcStrCopyFilename so that leading '~' values are replaced
with the value of the HOME environment variable.
Fontconfig 2.15.0 23 March 2025 FcStrSetAddFilename(3)