Instead of using markers that are sometimes before and sometimes after
the [...] and using `insert-before-markers` to make sure those that are
are before stay before, always place them before, and make them
"move after"so they stay with their [...] without the need for
insert-before-markers.
(footnote--current-regexp): Add arg to match previous style.
Include the start/end "tags" in the regexp. Adjust all callers.
(footnote--markers-alist): Change position of POINTERS.
(footnote--refresh-footnotes, footnote--renumber)
(footnote--make-hole, footnote-delete-footnote)
(footnote-back-to-message): Adjust accordingly, mostly by using
`looking-at` instead of `looking-back`.
(footnote--make-hole): Always return footnote nb to use.
(footnote-add-footnote): Simplify call accordingly.
* test/lisp/mail/footnote-tests.el: New file.
Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November. Change these FTP URLs to https://ftp.gnu.org
instead. Make similar changes for URLs to other organizations moving
away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.
