[PATCH 1/3] doc: usage: Add general rule for `$?`

[Quentin Schulz]

Hi Tom,

On 10/21/25 10:25 PM, Tom Rini wrote:
[...]
> diff --git a/doc/usage/cmdline.rst b/doc/usage/cmdline.rst
> index 58240c5279cd..cb353975eb82 100644
> --- a/doc/usage/cmdline.rst
> +++ b/doc/usage/cmdline.rst
> @@ -55,6 +55,12 @@ General rules
>      command will cause "run" to terminate, i. e. the remaining
>      variables are not executed.
>   
> +#. The variable `?` will be set as the return value of any command. These

s/These/The possible/ ?

> +   values are 0 on success, -1 on a usage related errors, i. e. invalid syntax

s/a//
or
s/a/any/
?

I would also add a comma after "syntax".

Should i.e. be e.g.? c.f. https://en.wiktionary.org/wiki/i.e.

> +   and 1 on any other error. Any exceptions to this are documented by the
> +   specific command, i. e. :doc:`cmd/for` sets this based on the last command

s/i. e./e.g./

Cheers,
Quentin