SYNOPSIS

#include <allegro5/allegro.h>
bool al_ustr_vappendf(ALLEGRO_USTR *us, const char *fmt, va_list ap)

DESCRIPTION

Like al_ustr_appendf(3alleg5) but you pass the variable argument list directly, instead of the arguments themselves. See al_ustr_newf(3alleg5) about the "%s" and "%c" specifiers.

Returns true on success, false on error.