Re: setting face in gnus-user-format-function-x

[Michael Piotrowski <mxp@dynalabs.de>]

On 2011-05-31, pmlists@free.fr (Peter Münster) wrote:

>>> I would like to set different faces for some marks in the summary lines.
>>> But unfortunately, when changing the mark, the mark-letter is updated,
>>> but the face is not. Only after reopening the group, the faces get
>>> right.
>> 
>> I think your best bet would be to put a function into
>> `gnus-summary-update-hook', possibly calling
>> `gnus-summary-update-article-line' to delete the line and reinsert it.
>
> Oh, no chance for an easier solution...? :(
> Ok, one day, I'll try it.

I just tried it.  Using `gnus-summary-update-hook' works.  For my
application--a different face for the date, depending on the age of the
message--I used the following two-step approach:

1. I have a user format function that adds a non-face property, roughly
   something like this:

    (cond
     ((= message-day today)
      (put-text-property 0 10 'mxp-date 'today message-date))
     ((= message-day (1- today))
      (put-text-property 0 10 'mxp-date 'yesterday message-date))
     (t
      (put-text-property 0 10 'mxp-date 'older message-date)))

2. I have a function that looks for this property (using
   `gnus-find-text-property-region') and sets the desired face.  This
   function is called by `gnus-summary-update-hook'.

Up to now, this approach seems to work nicely.  Maybe you can adapt it
to your needs.

Greetings

-- 
Dr.-Ing. Michael Piotrowski, M.A.                   <mxp@dynalabs.de>
Public key at <http://www.dynalabs.de/mxp/pubkey.txt> (ID 0x1614A044)