linux-kernel - Re: [PATCH 12/14] kconfig: sort found symbols by relevance

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Date:	Mon, 24 Jun 2013 19:13:48 +0200
From:	"Yann E. MORIN" <yann.morin.1998@...e.fr>
To:	Jean Delvare <jdelvare@...e.de>, Michal Marek <mmarek@...e.cz>
Cc:	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	Roland Eggner <edvx1@...temanalysen.net>,
	Wang YanQing <udknight@...il.com>
Subject: Re: [PATCH 12/14] kconfig: sort found symbols by relevance

Jean, Michal, All,

On 2013-06-24 09:57 +0200, Jean Delvare spake thusly:
> Le Wednesday 19 June 2013 à 00:45 +0200, Yann E. MORIN a écrit :
> > When searching for symbols, return the symbols sorted by relevance.
> > 
> > Sorting is done as thus:
> >   - first, symbols with a prompt,   [1]
> >   - then, smallest offset,          [2]
> >   - then, shortest match,           [3]
> >   - then, highest relative match,   [4]
> >   - finally, alphabetical sort      [5]
> > 
> > So, searching (eg.) for 'P.*CI' :
> 
> Nobody would actually search for that, so that's not a particularly good
> example to determine whether your sort order is sane or not.

Yes, this was just to explain the sorting algorithm with a simple
example.

[--SNIP--]
> > This heuristic tries hard to get interesting symbols first in the list.
> 
> I know I am the one whose question triggered this work from you, but in
> the end the "response" seems disproportionate. Having 5 different
> ordering rules is a lot, and that's quite a bit of code, which while not
> the most complex in the world, is still far from trivial and may require
> maintenance work in the future.

OK, I understand you concerns.

Michal, please do not apply this patch: I'll rewrite it with a simpler
heuristic as Jean suggested, and will re-submit a complete pull-request
later tonight.

> So I think it is more important to make it clearer that regular
> expressions are allowed, than to come up with a brilliant sort order. I
> know the help page says it, but the prompt itself only asks for a
> "(sub)string" and it is not immediately obvious (to me at least) that
> regular expressions are considered substrings.

OK, Ill see to rewite the title of the dialog box.

Thanks for the review!

Regards,
Yann E. MORIN.

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