bug#50929: Add slurp-sexp and barf-sexp

[Philip Kaludercic]

Richard Stallman <rms@gnu.org> writes:

> [[[ 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. ]]]
>
> Thanks for explaining.  I think these commands will be useful if they
> have short enough key sequences -- can we find short enough ones to
> give them?

I use C-<left> and C-<right>, but alternatives I can think of are
M-<left> and M-<right>, C-< and C-> or M-[ and M-].  The former two
combinations are both bound to left- and right-word, and the latter two
combination is unbound in emacs-lisp-mode.

> I think `swallow-sexp' and `disgorge-sexp' are better names.

I like these too.

-- 
        Philip Kaludercic