mairix 0.21

mairix is a tool for indexing and searching email messages stored in Maildir, MH, or mbox folders. The index contains a map of which words occur in which parts of which messages.
Searches on this index are fast and generate symlinks to the matching messages in a new Maildir or MH folder, or copies of matching messages in an mbox folder, which can be browsed normally in a mail client.
Main features:
- Indexing is fast. It runs incrementally on new messages - any particular message only gets scanned once in the lifetime of the index file.
- The search mode populates a "virtual" maildir (or MH) folder with symlinks which point to the real messages. This folder can be opened as usual in your mail program. (Note, if messages are in mbox folders, copies are made. Similarly if the virtual folder has mbox format, it is filled with copies of the matched messages.)
- The search mode is very fast.
- Indexing and searching works on the basis of words. The index file tabulates which words occur in which parts (particular headers + body) of which messages.
Enhancements:
- A handful of bugs were fixed: crashes in the name/value parser, handling of . and .. in MH folders, broken mbox folders, and indexing when the database only contained a single message.