Cameron Simpson wrote (Tue 2017-Apr-18 08:51:01 +1000):

> ... and I stick the X-Label value on the right of the listing.

Thank you for having mentioned this. I have been adding X-Label
headers for years (via procmail, for many but not all incoming
emails), mostly using them for "~y" in manually typed index
limits and for a few save-hooks, but I never thought of getting
them displayed in the index.

My index_format has now been extended by "%* %?y?  %y?": If there
is an X-Label, it will be shown right-justified (prepended with
two spaces for visual separation), and if there is no X-Label,
the index row will look just like before.

Cheers, Marcus

-- 
   Marcus C. Gottwald  ·  <[email protected]>  ·  https://cheers.de

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