From: Leo <sdl.web@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: HIST to read-from-minibuffer
Date: Tue, 25 May 2010 19:20:11 +0100 [thread overview]
Message-ID: <xbailjb7kfms.fsf@cam.ac.uk> (raw)
In-Reply-To: 87ljb7q33m.fsf@mail.jurta.org
On 2010-05-25 18:54 +0100, Juri Linkov wrote:
>>> (let ((hist '("a" "b" "c")))
>>> (read-from-minibuffer "Prompt: " nil nil nil '(hist . 2)))
>>>
>
>>> M-p => "c"
>>
>> I think I don't understand this sentence:
>>
>> "Positions are counted starting from 1 at the beginning of the list."
>>
>> I thought HIST is a 1-based list, but it is still 0-based. Could you
>> make the doc-string a bit clearer? Thanks.
>
> It is 1-based.
>
>> For example, 0 works just fine:
>>
>> (let ((hist '("a" "b" "c")))
>> (read-from-minibuffer "Prompt: " nil nil nil '(hist . 0)))
>>
>> M-p => "a"
>
> "a" is the 1st element of HIST. M-p moves to the 1st history element here.
This bit is what confuses me:
(hist . 0)
^
+----- why '0' here to mean first element?
Leo
next prev parent reply other threads:[~2010-05-25 18:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-22 20:25 HIST to read-from-minibuffer Leo
2010-05-25 16:09 ` Juri Linkov
2010-05-25 16:37 ` Leo
2010-05-25 17:54 ` Juri Linkov
2010-05-25 18:20 ` Leo [this message]
2010-05-26 3:52 ` Leo
2010-05-30 18:45 ` Juri Linkov
2010-05-31 11:52 ` Leo
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