broken out from dabbrev--find-expansion. Handle minibuffer
specially here.
(dabbrev--find-expansion): Simplify code in various ways.
Don't treat minibuffers specially.
Call dabbrev--make-friend-buffer-list.
(dabbrev--select-buffers): Don't treat minibuffers specially.
Simplify.
(dabbrev--scanning-message): Do nothing when minibuffer is current.
(dabbrev--eliminate-newlines): New variable.
(dabbrev--substitute-expansion): Convert newlines to spaces
if dabbrev--eliminate-newlines is set.
If abbrev and expansion are both all-lower-case,
leave dabbrev--last-case-pattern nil.
Treat a one-capital-letter abbrev as "not all upper case",
so as to force preservation of the expansion's pattern
if the expansion starts with a capital letter.
`upcase' or `downcase' or nil.
(dabbrev-expand): Don't do anything with dabbrev--last-case-pattern.
Pass new record-case-pattern arg to dabbrev--substitute-expansion.
(dabbrev--substitute-expansion): New arg record-case-pattern.
If it is non-nil, set dabbrev--last-case-pattern.
If ABBREV is " ", use dabbrev--last-case-pattern to change EXPANSION.
(dabbrev--find-expansion): Remove extra nreverse.
Make these simple three-value choices.
(dabbrev-completion): Handle dabbrev-case-fold-search
and dabbrev-case-replace the new way.
(dabbrev-expand, dabbrev--substitute-expansion): Likewise.
(dabbrev-completion): Bind completion-ignore-case.
(dabbrev--substitute-expansion): Downcase the expansion here,
but not if case pattern matches start of original expansion.
a separator, move back to previous abbreviation.
(dabbrev-expand): New feature--if you insert a space and
call this command again, it always fetches consecutive words
after the expansion that was found for the actual abbrev.
Call dabbrev--reset-global-variables as the first thing.
(dabbrev-abbrev-char-regexp): Default value is nil again.
(dabbrev--find-all-expansions): Don't use push.
(dabbrev--search): Likewise.
(dabbrev-check-other-buffers):
Renamed from dabbrev-always-check-other-buffers.
(dabbrev-check-all-buffers): Renamed frm dabbrev-check-rest-of-buffers.
(dabbrev-expand): Now checks for marker.
(dabbrev--try-find): Now does a protected call to `widen'.
(dabbrev-always-check-other-buffers): Default now t.
(dabbrev--capitalize): Function deleted.
(dabbrev-completion): Use `capitalize'.
