keywordmaps, how to get the commit message and the tag/label

[Roland Schmitz]

Hi *,

in my hgrc, i enabled the keyword extention. I also added:
[keywordmaps]
Author = {author|user}
Date = {date|isodate}

How can i get the commit message and the tag/label?
I want this to be replaced in my sourcefiles.

-- 
Mit freundlichem Gruss    Yours sincerely

  Roland Schmitz