David Maus <dm...@ictsoc.de> writes:
> At Wed, 10 Nov 2010 02:59:58 -0500,
> Chao LU wrote:
>> I'm trying to figure out how to do Properties search by define an agenda
>> command.
>>
>> Here is my item in org file:
>>
>> *** Franz Schwabl / Quantum Mechanics
>> :PROPERTIES:
>> :TITLE: Quantum Mechanics
>> :AUTHOR: Franz Schwabl
>> :CATEGORY: Quantum Mechanics
>> :TAGS: Quantum Mechanics, Group Theory
>> :KEYWORD: Quantum Mechanics, Perturbation, Second Quantization
>> :LOCATION: iTune
>> :END:
>
> IIRC the space character of a property value must be escaped (%20)
> because Org uses the plain space character to separate multiple values
> in a property. So the drawer should look like:
>
> :PROPERTIES:
> :TITLE: Quantum%20Mechanics
> :AUTHOR: Franz%20Schwabl
> :CATEGORY: Quantum%20Mechanics
> :TAGS: Quantum%20Mechanics Group%20Theory
> :KEYWORD: Quantum%20Mechanics Perturbation Second%20Quantization
> :LOCATION: iTune
> :END:
>
> But now, sadly, that's all we've got. The search engine can only
> search for equal strings (e.g. TITLE="Quantum%20Mechanics") or regular
> expression and it does not handle multivalue properties.
I don't believe this is the case. The following search works fine for me
with the OP's properties drawer:
C-c a m TITLE="Quantum Mechanics"
> Looks like to use the intended functionality someone has to patch Org
> mode's tag search to handle multivalue properties.
I don't believe the space in property values is meant to indicate
multiple values (i.e., in the same way that ":" separates tags). Here's
an example from the manual:
--8<---------------cut here---------------start------------->8---
* CD collection
** Classic
*** Goldberg Variations
:PROPERTIES:
:Title: Goldberg Variations
:Composer: J.S. Bach
:Artist: Glen Gould
:Publisher: Deutsche Grammophon
:NDisks: 1
:END:
--8<---------------cut here---------------end--------------->8---
That said, one can create ad hoc multivalue properties by using regexps
in property searches.
Best,
Matt
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