attachment in Mail?

[calmar <mac@calmar.ws>]

Hi, 
is there a way (well how :-) to show in the summary buffer if the mail
has an attachment?
As far as I read in the 'help' system, I may would need to set the
'gnus-summary-line-format' and there the u:
,----[ ...from the gnus manual ]
| `u'
|      User defined specifier.  The next character in the format string
|      should be a letter.  Gnus will call the function
|      `gnus-user-format-function-'`X', where `X' is the letter following
|      `%u'.  The function will be passed the current header as argument.
|      The function should return a string, which will be inserted into
|      the summary just like information from any other summary specifier.
`----
and then I would need to write a function which search for the strings
like this:
Content-Type: text/html; 
and when then I should get there in the summary buffer a sign if it's
plain text or html or whatever.

Well here would be the first (for me) difficulty: it says above the
function will passed the current _header_ as argument.

Well, I just would like to ask here, if there is *already* such
functionatly, before I try to write something in lisp the very first
time :-) (which I already have no idea how to do -> how to get the whole
mail as argument ?)

thanks
calmar

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