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Date: Thu, 5 Jul 2012 20:45:38 +0200
From: Frank Dittrich <>
Subject: Re: Should we add --make_check to --list=hidden-options?

On 07/05/2012 08:16 PM, Solar Designer wrote:
> As to adding it to --list=hidden-options, I don't mind, but I see little
> need.  It is meant to be used by "make check" only.

Today I saw a useful difference to --test=0:
--make_check doesn't test the user defined dynamic formats. It doesn't
read the config files, and apparently also works with a broken config.

So far, --make_check is also the only option using an underscore in the
And opposed to other options with an ambiguous abbreviated name,
the existence of --make_check doesn't prevent --make=filename.chr from
working. That's probably because --make_check isn't part of the usual
option handling, e.g., it is also impossible to use an abbreviated
option name like --make_ch to invoke the "make check" functionality.

If this will be true even for future john versions, I have to take this
into account if I ever switch to a generic approach in john.bash_completion.
The idea is to avoid ugly patterns like this one:
And also to get rid of the hard coded tests for uniqueness of
abbreviated option names, by automatically generating mappings of
abbreviated option names to their full names - as long as the
abbreviated option name is still unique.


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