Re: builtin/config: --name-only doesn't imply --show-names in "git config get"

[Junio C Hamano <gitster@pobox.com>]

Yukai Chou <muzimuzhi@gmail.com> writes:

> The v2.46.0 doc of git-config(1) says
>
>> --name-only
>> Output only the names of config variables for `list` or `get`.
> https://git-scm.com/docs/git-config#Documentation/git-config.txt---name-only
>
> But the behavior of --name-only is more like "disable non-name outputs
> and leave the output state of names as-is". Thus using --name-only
> alone, one gets totally empty lines (which might be weird); only using
> --name-only and --show-names together, can one get output of just
> names.
>
> # get empty line(s)
> git config get --all --name-only remote.origin.fetch
> # get lines of name(s)
> git config get --all --show-names --name-only remote.origin.fetch
>
> Either the doc or the behavior of --name-only needs some adjustment.

This argues for making "all" imply we need to show the name of the
configuration variable, and introducing an option "--hide-name" to
omit the name.  That way, you'd need to give clearly contradicting
"--hide-name" and "--name-only" together to get a nonsense output.