public-inbox.git  about / heads / tags
an "archives first" approach to mailing lists
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$ git show v1.4.0:TODO	# shows this blob on the CLI

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TODO items for public-inbox

(Not in any particular order, and
performance, ease-of-setup, installation, maintainability, etc
all need to be considered for everything we introduce)

* general performance improvements, but without relying on
  XS or pre-built modules any more than we currently do.
  (Optional Inline::C and user-compiled re2c acceptable)

* mailmap support (same as git) for remapping expired email addresses

* support remapping of expired URLs similar to mailmap
  (coordinate with git.git with this?)

* POP3 server, since some webmail providers support external POP3:
  https://public-inbox.org/meta/20160411034104.GA7817@dcvr.yhbt.net/
  Perhaps make this depend solely the NNTP server and work as a proxy.
  Meaning users can run this without needing a full copy of the
  archives in git repositories.

* HTTP and NNTP proxy support.  Allow us to be a frontend for
  firewalled off (or Tor-exclusive) instances.  The use case is
  for offering a publicly accessible IP with a cheap VPS,
  yet storing large amounts of data on computers without a
  public IP behind a home Internet connection.

* support HTTP(S) CONNECT proxying to NNTP for users with
  firewall problems

* DHT (distributed hash table) for mapping Message-IDs to various
  archive locations to avoid SPOF.

* optional Cache::FastMmap support so production deployments won't
  need Varnish (Varnish doesn't protect NNTP, either)

* dogfood and take advantage of new kernel APIs (while maintaining
  portability to older Linux, free BSDs and maybe Hurd).

* dogfood latest Xapian, Perl5, SQLite, git and various modules to
  ensure things continue working as they should (or more better)
  while retaining compatibility with old versions.

* Support more of RFC 3977 (NNTP)

* Combined "super server" for NNTP/HTTP/POP3 to reduce memory overhead

* Configurable linkification for per-inbox shorthands:
  "$gmane/123456" could be configured to expand to the
  appropriate link pointing to the gmane.io list archives,
  likewise "[Bug #123456]" could be configured to expand to
  point to some project's bug tracker at http://example.com/bug/123456

* configurable synonym and spelling support in Xapian

* Support optional "HTTPS Everywhere" for mapping old HTTP to HTTPS
  links if (and only if) the user wants to use HTTPS.  We may also
  be able to configure redirects for expired URLs.

  Note: message bodies rendered as HTML themselves must NOT change,
  the links should point to an anchor tag within the same page,
  instead; giving the user options.

* configurable constants (index limits, search results)

* handle messages with multiple Message-IDs (done for v2, doable for v1)

* handle broken double-bracketed References properly (maybe)
  and totally broken Message-IDs

  cf.  https://public-inbox.org/git/20160814012706.GA18784@starla/

* improve documentation

* linkify thread skeletons better
  https://public-inbox.org/git/6E3699DEA672430CAEA6DEFEDE6918F4@PhilipOakley/

* low-memory Email::MIME replacement: currently we generate many
  allocations/strings for headers we never look at and slurp
  entire message bodies into memory.  GMime+Inline::C could work.

* use REQUEST_URI properly for CGI / mod_perl2 compatibility
  with Message-IDs which include '%' (done?)

* more and better test cases (use git fast-import to speed up creation)

* large mbox/Maildir/MH/NNTP spool import (see PublicInbox::Import)

* Read-only WebDAV interface to the git repo so it can be mounted
  via davfs2 or fusedav to avoid full clones.
  davfs2 needs Range: request support for this to be feasible:
    https://savannah.nongnu.org/bugs/?33259
    https://savannah.nongnu.org/support/?107649

* Contribute something like IMAP IDLE for "git fetch".
  Inboxes (and any git repos) can be kept up-to-date without
  relying on polling.

* Improve bundle support in git to make it cheaper to host/clone
  with dumb HTTP(S) servers.

* Expose targeted reindexing of individual messages.
  Sometimes an indexing bug only affects a handful of messages,
  so it's not worth the trouble of doing a full reindex.

* code repository integration (cgit: done, TODO: gitweb, etc...)

* migration path to v2 without breaking v1 "git fetch" cronjobs

* imperfect scraper importers for obfuscated list archives
  (e.g. obfuscated Mailman stuff, Google Groups, etc...)

* improve performance and avoid head-of-line blocking on slow storage

* share "git cat-file --batch" processes across inboxes to avoid
  bumping into /proc/sys/fs/pipe-user-pages-* limits

* make "git cat-file --batch" detect unlinked packfiles so we don't
  have to restart processes (very long-term)

* support searching based on `git-patch-id --stable` to improve
  bidirectional mapping of commits <=> emails

* linter to check validity of config file

* linter option and WWW endpoint to graph relationships and flows
  between inboxes, addresses maildirs, coderepos, etc...

* pygments support - via Python script similar to `git cat-file --batch'
  to avoid startup penalty.  pygments.rb (Ruby) can be inspiration, too.

* highlighting + linkification for "git format-patch --interdiff" output

* highlighting + linkification for "git format-patch --range-diff" output
  (requires mirroring of git repos)

* parse and allow (semi)automatic-mirroring of "git request-pull" output
  for coderepos

* configurable diff output for solver-generated blobs

* figure out how search for messages with multiple Date: headers
  should work (some wacky examples out there...)

* support UUCP addresses for legacy archives

git clone https://public-inbox.org/public-inbox.git
git clone http://7fh6tueqddpjyxjmgtdiueylzoqt6pt7hec3pukyptlmohoowvhde4yd.onion/public-inbox.git