Gnus has used obarrays as makeshift hash tables for groups: group
names are coerced to unibyte and interned in custom obarrays, and
their symbol-value set to whatever value needs to be stored. This
patch replaces those obarrays with actual hash tables.
* lisp/gnus/gnus-util.el (gnus-intern-safe, gnus-create-hash-size):
Remove functions.
(gnus-make-hashtable): Change to return a real hash table.
(gnus-text-property-search): Utility similar to `text-property-any',
but compares on `equal'. Needed because the 'gnus-group text
property is now a string.
* lisp/gnus/gnus.el (gnus-gethash, gnus-gethash-safe, gnus-sethash):
Remove macros.
(gnus-group-list): New variable holding all group names as an
ordered list. Used because `gnus-newsrc-hashtb' used to preserve
`gnus-newsrc-alist' ordering, but now doesn't.
* lisp/gnus/nnmaildir.el (nnmaildir--servers): Change from obarray to
alist.
(nnmaildir--up2-1): Remove function.
* lisp/thingatpt.el (thing-at-point-newsgroup-p): This was making use
of Gnus obarrays, replace with a cond that can handle many different
possibilities.
* lisp/gnus/gnus-bcklg.el (gnus-backlog-articles): Remove
gnus-backlog-hashtb, which wasn't doing anything. Just keep a list
of ident strings in gnus-backlog-articles.
(gnus-backlog-setup): Delete unnecessary function.
(gnus-backlog-enter-article, gnus-backlog-remove-oldest-article,
gnus-backlog-remove-article, gnus-backlog-request-article): Alter
calls accordingly.
* lisp/gnus/gnus-dup.el (gnus-duplicate-list-max-length): Rename from
`gnus-duplicate-list-length', for accuracy.
* lisp/gnus/gnus-start.el (gnus-active-to-gnus-format,
gnus-groups-to-gnus-format, gnus-newsrc-to-gnus-format): Read group
names as strings.
(gnus-gnus-to-quick-newsrc-format): Write `gnus-newsrc-alist' using
the ordering in `gnus-group-list'.
* lisp/gnus/gnus-agent.el:
* lisp/gnus/gnus-async.el:
* lisp/gnus/gnus-cache.el:
* lisp/gnus/gnus-group.el:
* lisp/gnus/gnus-score.el:
* lisp/gnus/gnus-sum.el:
* lisp/gnus/gnus-topic.el:
* lisp/gnus/message.el:
* lisp/gnus/mml.el:
* lisp/gnus/nnagent.el:
* lisp/gnus/nnbabyl.el:
* lisp/gnus/nnvirtual.el:
* lisp/gnus/nnweb.el: In all files, change obarrays to hash-tables,
and swap `gnus-sethash' for `puthash', `gnus-gethash' for `gethash',
`mapatoms' for `maphash', etc.
* test/lisp/gnus/gnus-test-headers.el (gnus-headers-make-dependency-table,
gnus-headers-loop-dependencies): New tests to make sure we're
building `gnus-newsgroup-dependencies' correctly.
