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Re: HIST to read-from-minibuffer
From: |
Leo |
Subject: |
Re: HIST to read-from-minibuffer |
Date: |
Tue, 25 May 2010 19:20:11 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) |
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