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clap/examples/tutorial_derive/03_02_option.md
Ed Page e1aafce431 test(tutorial): Ensure we actually test code 
Biggest problem identified is that we are incorrectly setting the help
usage in `04_04_custom`
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$ 03_02_option_derive --help
clap [..]
A simple to use, efficient, and full-featured Command Line Argument Parser

USAGE:
    03_02_option_derive[EXE] [OPTIONS]

OPTIONS:
    -n, --name <NAME>    
    -h, --help           Print help information
    -V, --version        Print version information

$ 03_02_option_derive
name: None

$ 03_02_option_derive --name bob
name: Some("bob")

$ 03_02_option_derive --name=bob
name: Some("bob")

$ 03_02_option_derive -n bob
name: Some("bob")

$ 03_02_option_derive -n=bob
name: Some("bob")

$ 03_02_option_derive -nbob
name: Some("bob")