Re: [PATCH v2] kconfig: add optional warnings for changed input values

[Nathan Chancellor]

On Thu, 21 May 2026 10:28:24 +0800, Pengpeng Hou <pengpeng@xxxxxxxxxxx> wrote:
> [...]
> menu nodes cannot emit duplicate warnings.
> 
> Document the new environment variable and add tests for both olddefconfig
> and savedefconfig.
> 
> Signed-off-by: Pengpeng Hou <pengpeng@xxxxxxxxxxx>

I like the idea behind this patch a lot, as I have often wished for a
warning like this up front for non-interactive Kconfig validation when
updating configurations using scripts/config. However, one problem that
I noticed in testing is the warning does not get printed to stderr, so
it is hidden when using 'make -s'. I think this should be addressed
before acceptance since warnings should be visible with 'make -s' still.

-- 
Cheers,
Nathan