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@ -11,19 +11,24 @@ type iterativeParser interface {
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}
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// To enable short-option handling (e.g., "-it" vs "-i -t") we have to
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// iteratively catch parsing errors. This way we achieve LR parsing without
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// iteratively catch parsing errors. This way we achieve LR parsing without
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// transforming any arguments. Otherwise, there is no way we can discriminate
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// combined short options from common arguments that should be left untouched.
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func parseIter(set *flag.FlagSet, ip iterativeParser, args []string) error {
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// Pass `ignoreErrors` to continue parsing options on failure, for example
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// during shell completion when the user-supplied options may be incomplete.
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func parseIter(set *flag.FlagSet, ip iterativeParser, args []string, ignoreErrors bool) error {
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for {
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err := set.Parse(args)
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if !ip.useShortOptionHandling() || err == nil {
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if ignoreErrors {
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return nil
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}
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return err
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}
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errStr := err.Error()
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trimmed := strings.TrimPrefix(errStr, "flag provided but not defined: -")
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if errStr == trimmed {
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if !ignoreErrors && errStr == trimmed {
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return err
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}
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