Re: Display something besides Subject line on request

[ShengHuo ZHU <zsh@cs.rochester.edu>]

Harry Putnam <reader@newsguy.com> writes:

> I've successfully confused myself beyond all reason while reading the
> gnus manual again...
>
> First the wanted functionality:
>
> To be able to cause the display of a different header in summary lines
> on request.  Or on group parameter basis.
>
> I think this is different than the To From stuff delt with at:
>
> (How do those cool urls work again?)
> info://gnus/To_From_Newsgroup     <== naa

Try <info://gnus/To+From+Newsgroup>


[...]

> At this point I want that limited buffer to display the Keywords
> header instead of the Subject header.
> When I pop that limit I want the Subject back.  Either by
> M-x <something> or by hooking into the limiting some how.
> I guess M-x <something> is the more reasonable.
> One could say M-x <something> to  toggle Keywords and M-x <something>
> again to go back to Subject.

You can write a user-defined spec function with a switch variable, and
write another function to toggle the variable and update the summary
lines.

> Further the Keywords line I may have added by gnus-edit-article will
> not be in the nov file.  Unless I've run nnml-generate-nov... after
> adding it and have code in .gnus to include keywords in the nov file.
> This I also know how to do, but its not really what is necessary to get
> the results described above.  Or at least not a very practicle way. 

The NOV updating code is in nnml.el and works for me. And also after
you g-e-a, the summary line is updated.  What are the values of your
gnus-extra-headers and nnmail-extra-headers?

ShengHuo