Update error-handling.md
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@ -2064,7 +2064,7 @@ string and add a flag to the Option variable. Once were done that, Getopts does
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let mut opts = Options::new();
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opts.optopt("f", "file", "Choose an input file, instead of using STDIN.", "NAME");
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opts.optflag("h", "help", "Show this usage message.");
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opts.optflag("q", "quit", "Silences errors and warnings.");
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opts.optflag("q", "quiet", "Silences errors and warnings.");
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...
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```
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