[Evolution] regex and "specific header" searching for vFolders

[Mertens Bram <bram-mertens linux be>]

Hi,

I wanted to create a vFolder that holds all messages of threads I
started or added to.
My idea was to create a filter that looked for a specific string in the
header 'References:'.

But it seems that both a regex-search and a 'specific header' search are
not possible when defining advanced searches and/or vFolder-filtering
(which I suppose are basically the same).

Is there a specific reason why this isn't possible?  Or is this planned?

TIA
-- 
 #  Mertens Bram "M8ram" <bram-mertens linux be>   Linux User #249103  #
 #  Red Hat Linux 7.3  KDE 3.0.0-10  kernel 2.4.18-3  i686  128MB RAM  #