Re: [PATCH v3] Allow applying filters to summary consecutively

[Richard Stallman]

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

  > Did you bind 'q' to some other command in your local customizations, 
  > perhaps?  'q' is by default bound to rmail-quit/rmail-summary-quit, which 
  > quits Rmail.

Indeed, I did that.  I didn't remenber that I had chaged that binding in
summaries.

(I think the binding of q in summaries would be a good thing to change
by default.)

  > It seems more natural, at least to me, to ask the user how they want the 
  > command to be applied.

To me that seems the least convenient kind of interface.
I'd prefer an interface which doesn't need to ask questions.

Here's a proposal which doesn't involve use of q.

A summary filter command _in the Rmail buffer_ should always
make a new summary, discarding the previous summary first.

A summary filter command _in a summary buffer_ should always modify
the existing summary in that buffer.  If you type | first, you get
union; otherwise, intersection.

I think this will be both natural and convenient.

Additional idea: ~ in a summary buffer could invert that summary.

-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)