RE: [External] : Q1 - the keys' bindings to work more widely

[Drew Adams <drew.adams@oracle.com>]

>> I must note that you’re in for a lot of swimming against the current
>> if you want to reclaim C-c from its established Emacs role as a prefix. 
>> A lot of modes bind some of their functionality to sequences
>> starting with C-c, and you will either have to rebind them in order to
>> start using them, or they will wrest C-c back from you.
>
> As far as I read in the Emacs conventions, the C-c is reserved for users,
> so other modes should not use it.

No, read the doc again.  This is what it tells Elisp coders:

  Don’t define ‘C-c LETTER’ as a key in Lisp programs.  Sequences
  consisting of ‘C-c’ and a letter (either upper or lower case) are
  reserved for users; they are the *only* sequences reserved for
  users, so do not block them.

Only C-c followed by a _letter_ is reserved for users.

It then goes on to speak about conventions for other bindings
with prefix key `C-c', i.e., those with only letters after the
prefix.