Re: [PATCH] SKIP_DASHED_BUILT_INS: respect `config.mak`

Johannes Schindelin [off-list ref] writes:

quoted

By the way, I wonder if we can (semi-)automate looking for such a
mistake in the future.  Does a simple rule like:

    No variable that has "Define X if you want to distim the doshes"
    at the beginning of the Makefile must be referenced before we
    include config.mak

work?

...
The only thing that sticks out in this output is that we use SHELL_PATH a
couple times before including config.mak.
...
And I don't think that this hack of mine can be converted into a robust
check that we'd want to run to verify that the Makefile does not use
constants before they are potentially defined in config.mak,
unfortunately.

Oh, I wasn't expecting all the work be done by you in your busy
schedule ;-) The primary thing I was looking for was to sanity check
the idea of the general rule.  Implementation of it can start as
something the reviewers would keep in their heads.  A script with
false positives that authors can use to be reminded may come next.

We do not have to jump to the perfection from day one, in other
words.