From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Phil Hagelberg <phil@hagelb.org>
Cc: emacs-devel@gnu.org
Subject: Re: Changes to completing-read
Date: Sun, 19 Oct 2008 09:03:14 -0400 [thread overview]
Message-ID: <jwvtzb8yc22.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87myh1dx46.fsf@hagelb.org> (Phil Hagelberg's message of "Sat, 18 Oct 2008 21:31:21 -0700")
> It looks like the function gets called four times when the user presses
> TAB, and the only difference between the four calls is the last
> argument. t, nil, 'lambda, and the cons (boundaries . "") are
> passed. According to the docstrings of try-completion and
> all-completions, t and nil should be passed to the collection function
> when those two functions get called as part of the completion process
> somehow. But I have no idea where 'lambda or (boundaries . "") are
> coming from.
The `lambda' is when the function is called by `test-completion'.
The `boundaries' is a new functionality, still undocumented.
> It's rather unclear from the docstrings, but from what I can piece
> together, the "collection" function should act totally differently based
> on the value of the third argument.
That's right. A better way to think of it might be that the "function"
is an object (in the OO sense), and the last arg is the method to
be executed.
Stefan
next prev parent reply other threads:[~2008-10-19 13:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-19 4:31 Changes to completing-read Phil Hagelberg
2008-10-19 7:35 ` Eli Zaretskii
2008-10-20 3:46 ` Phil Hagelberg
2008-10-19 13:03 ` Stefan Monnier [this message]
2008-10-20 4:28 ` Phil Hagelberg
2008-10-20 13:31 ` Stefan Monnier
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