Lines Matching full:failf
828 // failf prints to standard error a formatted error and usage message and
830 func (f *FlagSet) failf(format string, a ...interface{}) error {
866 return false, f.failf("bad flag syntax: %s", s)
888 return false, f.failf("flag provided but not defined: -%s", name)
894 return false, f.failf("invalid boolean value %q for -%s: %v", value, name, err)
898 return false, f.failf("invalid boolean flag %s: %v", name, err)
909 return false, f.failf("flag needs an argument: -%s", name)
912 return false, f.failf("invalid value %q for flag -%s: %v", value, name, err)
