expand.el: Simplify by always using a list in `expand-list`

The old code set `expand-list` to a vector of "marks" but also
supported it being set by third party code to a list.
The code to build and use the vector was a internally using
a list, so we cut the middle man and just always use a list so
it doesn't matter whether we set it or a third party code did.

* lisp/expand.el (expand-add-abbrevs): Use `mapc` instead of recursion.
(expand-add-abbrev): Add dummy `rest` arg so we can `apply` it blindly
in `expand-add-abbrevs`.
(expand-abbrev-hook): `expand-list` is never set to a vector any more.
(expand-do-expansion): Set `expand-list` to a list rather than a vector.
(expand-abbrev-from-expand): Use `abbrev-symbol`.
(expand-build-list, expand-build-marks): Delete functions, not used
any more.

0 files changed, 0 insertions, 0 deletions