bug#46627: [PATCH] Add new help command 'describe-command'

[Richard Stallman]

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  > TAB and 'TAB TAB' already do different things. Now, what happens if a 
  > third 'TAB' will switch the completion tale? The user will have to count 
  > how many times they pressed TAB now. Did I press it one or twice?

There is no need to count.  You just keep typing TAB until you get
what you want.  When it alternates between all functions and only
commands, you'll see the number of completions change in an obvious
way.

Another advantage is that this gives you both completion spaces in
every command that reads a function name, not only in
describe-function.

We should try this and see what it is like, then judge it.

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