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Re: Selecting default prompt text


From: Richard Riley
Subject: Re: Selecting default prompt text
Date: Thu, 12 Feb 2009 10:54:44 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.90 (gnu/linux)

Kevin Rodgers <address@hidden> writes:

> Richard Riley wrote:
>> I like my interactive functions to generally use the word or region at
>> point as a default. Is there a way to make the read-string mini buffer
>> input to pre-select the default value?
>>
>> e.g
>>
>> consider
>>
>> (setq url (read-string (format "Url (%s) :" url) url nil url))
>>
>> Here I would like to see at the input prompt
>>
>> Url (xyz): xyz
>>
>> with the default value of "xyz" already selected. In other words
>> the same behaviour as when you tab into a populated  entry field in most
>> of applications.
>
> (let ((url-at-point (thing-at-point 'url)))
>   (read-string (if url-at-point
>                  (format "URL (%s): " url-at-point)
>                "URL: ")
>              nil nil url-at-point))

Hi Kevin,

Sorry if I was not clear. I don't mean a default value - I mean
pre-selected as in "in region". e.g when you tab to a field in a web
form for example - The data in the field is highlighted/selected. I
already had a default value set as "url" in the code above.

e.g

goto www.Google.com 

enter some text and tab to a button then tab back. The text in the
search field is selected.



-- 
 important and urgent problems of the technology of today are no longer the 
satisfactions of the primary needs or of archetypal wishes, but the reparation 
of the evils and damages by the technology of yesterday.  ~Dennis Gabor, 
Innovations:  Scientific, Technological and Social, 1970


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