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.

Looks like to use the intended functionality someone has to patch Org
mode's tag search to handle multivalue properties.

Best,
  -- David


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