flag.FlagSet.failf (method)
7 uses
flag (current package)
flag.go#L891: func (f *FlagSet) failf(format string, a ...interface{}) error {
flag.go#L927: return false, f.failf("bad flag syntax: %s", s)
flag.go#L949: return false, f.failf("flag provided but not defined: -%s", name)
flag.go#L955: return false, f.failf("invalid boolean value %q for -%s: %v", value, name, err)
flag.go#L959: return false, f.failf("invalid boolean flag %s: %v", name, err)
flag.go#L970: return false, f.failf("flag needs an argument: -%s", name)
flag.go#L973: return false, f.failf("invalid value %q for flag -%s: %v", value, name, err)