flag.FlagSet.failf (method)
7 uses
flag (current package)
flag.go#L906: func (f *FlagSet) failf(format string, a ...any) error {
flag.go#L941: return false, f.failf("bad flag syntax: %s", s)
flag.go#L963: return false, f.failf("flag provided but not defined: -%s", name)
flag.go#L969: return false, f.failf("invalid boolean value %q for -%s: %v", value, name, err)
flag.go#L973: return false, f.failf("invalid boolean flag %s: %v", name, err)
flag.go#L984: return false, f.failf("flag needs an argument: -%s", name)
flag.go#L987: return false, f.failf("invalid value %q for flag -%s: %v", value, name, err)