clap/examples/tutorial_derive/04_02_validate.md
Ed Page 36bc641648 fix(help): Remove extraneous text from built-ins
This is an intermediate solution for #4408.  As there were no agreeed
upon goals, I went with what I felt read well and that I saw commonly
used on non-clap commands.

- "information" isn't really a necessary word.
- I originally favored `Print this help` but realied that doesn't read
  correctly in completions.
- Besides being shorter, the reason for the flipped short/long hint is
  it gives people the context they need for scanning, emphasizing
  "summary" and "more".

Fixes #4409
2023-01-03 11:02:26 -06:00

598 B

$ 04_02_validate_derive --help
A simple to use, efficient, and full-featured Command Line Argument Parser

Usage: 04_02_validate_derive[EXE] <PORT>

Arguments:
  <PORT>  Network port to use

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

$ 04_02_validate_derive 22
PORT = 22

$ 04_02_validate_derive foobar
? failed
error: Invalid value 'foobar' for '<PORT>': `foobar` isn't a port number

For more information try '--help'

$ 04_02_validate_derive 0
? failed
error: Invalid value '0' for '<PORT>': Port not in range 1-65535

For more information try '--help'