RE: Rectangular regions

[Drew Adams]

> But I never use C-] for abort-recursive-edit. Comments?

No thanks.  I use `C-]' all the time.  (And I use recursive
minibuffers, where `C-]' pops a level.)

Put the new command on prefix key `C-x r', along with the
other rectangle commands.

`C-x r #' is a fine choice (= `C-x R #', by default), as is
`C-x r ]' and some others.  And no, it does not need to be a
quick key.

We can also move the register commands to prefix key `C-x w'.

Leave simple repeatable keys alone - `M-]', `M-SPC', `C-SPC',
`M-#', `M-+',...  Leave keys such as `C-x SPC' and `C-x C-y'
alone.