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clap/examples/tutorial_derive/04_02_parse.md
Ed Page c90a4eabae fix(help): Make output more dense 
In looking at other help output, I noticed that they use two spaces, in
place of clap's 4, and it doesn't suffer from legibility.  If it
doesn't make the output worse, let's go ahead and make it as dense so we
fit more content on the screen.

This is a part of #4132
2022-09-07 17:13:55 -05:00

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$ 04_02_parse_derive --help
A simple to use, efficient, and full-featured Command Line Argument Parser

Usage: 04_02_parse_derive[EXE] <PORT>

Arguments:
  <PORT>  Network port to use

Options:
  -h, --help     Print help information
  -V, --version  Print version information

$ 04_02_parse_derive 22
PORT = 22

$ 04_02_parse_derive foobar
? failed
error: Invalid value "foobar" for '<PORT>': invalid digit found in string

For more information try --help

$ 04_02_parse_derive 0
? failed
error: Invalid value "0" for '<PORT>': 0 is not in 1..=65535

For more information try --help