>>> "JAOR" == Jose A Ortega Ruiz <jao@gnu.org> writes:

> On Thu, Dec 02 2021, Uwe Brauer wrote:
> [...]

>> So it seems that %U is the culprit here. That however seems difficult to
>> Any idea how to do that?

> A way is to define your own format function.  For instance, i have this
> function to display the from address with anything matching the regexp
> jao-gnus--news-rx removed:

>       (defun gnus-user-format-function-f (headers)
>         (let* ((from (gnus-header-from headers))
>                (from (gnus-summary-extract-address-component from)))
>           (replace-regexp-in-string jao-gnus--news-rx "" from)))

> the `-f' at the end or the name matters, it's the code to use in the
> line format:  "... %uf ..."  stands for "user-defined function f"

Thanks  I will give it a try.