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From:   Junio C Hamano <gitster@pobox.com>
To:     "Jerry Zhang via GitGitGadget" <gitgitgadget@gmail.com>
Cc:     git@vger.kernel.org, Jerry Zhang <jerry@skydio.com>
Subject: Re: [PATCH v3 5/7] builtin: patch-id: add --include-whitespace as a
 command mode
References: <pull.1359.v2.git.1663654859.gitgitgadget@gmail.com>
        <pull.1359.v3.git.1665737804.gitgitgadget@gmail.com>
        <bbaa2425ad0cbb4b945cdce3402c6ed5fab381ec.1665737804.git.gitgitgadget@gmail.com>
Date:   Fri, 14 Oct 2022 14:24:15 -0700
In-Reply-To: <bbaa2425ad0cbb4b945cdce3402c6ed5fab381ec.1665737804.git.gitgitgadget@gmail.com>
        (Jerry Zhang via GitGitGadget's message of "Fri, 14 Oct 2022 08:56:42
        +0000")
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"Jerry Zhang via GitGitGadget" <gitgitgadget@gmail.com> writes:

> +--include-whitespace::
> +	Use the "stable" algorithm described below and also don't strip whitespace
> +	from lines when calculating the patch-id.
> +
> +	This is the default if patchid.includeWhitespace is true and implies
> +	patchid.stable.

This seems very much orthogonal to "--stable/--unstable.  

Because the "--stable" variant is more expensive than "--unstable",
I am not sure why such an implication is a good thing to have.  Why
can we not have

    --include-whitespace --stable
    --include-whitespace --unstable

both combinations valid?