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Re: [O] org-element-property syntax (turning strings into keyword symbol

From: Matt Price
Subject: Re: [O] org-element-property syntax (turning strings into keyword symbols)
Date: Sat, 9 Nov 2013 11:15:12 -0500

On Sat, Nov 9, 2013 at 2:48 AM, Nicolas Goaziou <address@hidden> wrote:
> Hello,
> Matt Price <address@hidden> writes:
>> This works fine.  Now when I come back to this buffer I want to check
>> whether any of the properties are actually there.  So I am trying
>> something like this:
>> (let ((hasprops nil))
>>   (dolist prop org-writers-room-properties
>>       (if (org-element-property (car prop) (org-element-at-point))
>>            (setq hasprops t))
>>       (if (hasprops)
>>           (etc.))
>> However this doesn't work because (1) the car of "prop" (which is in
>> fact the property name) is not necessarily capitalized and
> Then `upcase' the property name first. I assume you will only refer to
> user-defined properties so their equivalent keyword will always be in
> upper cases.
>> (2) the "property" parameter of org-element-property is not a string,
>> but a "keyword symbol". Somehow I have to turn my string into the
>> appropriate keyword symbol. Does anyone know how to do this?
> Use `intern'.
> For efficiency reasons, I also suggest to store `org-element-at-point'
> in a variable instead of computing it again each time you are looking
> for a property:
>   (let ((hashprops nil)
>         (element (org-element-at-point)))
>     (dolist (prop org-writers-room-properties)
>       (if (org-element-property (intern (concat ":" (upcase prop))) element)
>           ...)))
ah, thank you so much for this. I don't know how I would ever have
found intern on my own.  makes my life much easier!

> Regards,
> --
> Nicolas Goaziou

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