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bug#36594: No hint for missing argument
From: |
Ludovic Courtès |
Subject: |
bug#36594: No hint for missing argument |
Date: |
Thu, 11 Jul 2019 22:40:58 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) |
Julien Lepiller <address@hidden> skribis:
> When you type an option that requires an argument, but don't provide one, you
> get an error message that says there is a missing argument. There should
> brobably be a hint on what values are acceptable. For instance, there is no
> way to know from "guix package -v" or "guix package --help" what values are
> accepted. In other cases, there is a --list-something option.
>
> Maybe -v is the only case where it would be useful to do something, because
> you could guess its existence and not use a verbosity level. Maybe fixing the
> help message to say --verbosity=[0-5] is enough?
Currently it says:
--8<---------------cut here---------------start------------->8---
$ guix build --help | grep -e -verbo
-v, --verbosity=LEVEL use the given verbosity LEVEL
--8<---------------cut here---------------end--------------->8---
We could add “an integer between 0 and 2”, but this was left
non-explicit in case we eventually extend it to -7 to +42.
Maybe there’s a limit on what we can do to help users? :-)
Ludo’.