mirror of https://github.com/djcb/mu.git
b75f9f508b
mu's query parser is the piece of software that turns your queries
into something the Xapian database can understand. So, if you query
"maildir:/inbox and subject:bla" this must be translated into a
Xapian::Query object which will retrieve the sought after messages.
Since mu's beginning, almost a decade ago, this parser was based on
Xapian's default Xapian::QueryParser. It works okay, but wasn't really
designed for the mu use-case, and had a bit of trouble with anything
that's not A..Z (think: spaces, special characters, unicode etc.).
Over the years, mu added quite a bit of pre-processing trickery to
deal with that. Still, there were corner cases and bugs that were
practically unfixable.
The solution to all of this is to have a custom query processor that
replaces Xapian's, and write it from the ground up to deal with the
special characters etc. I wrote one, as part of my "future, post-1.0
mu" reseach project, and I have now backported it to the mu 0.9.19.
From a technical perspective, this is a major cleanup, and allows us
to get rid of much of the fragile preprocessing both for indexing and
querying. From and end-user perspective this (hopefully) means that
many of the little parsing issues are gone, and it opens the way for
some new features.
From an end-user perspective:
- better support for special characters.
- regexp search! yes, you can now search for regular expressions, e.g.
subject:/h.ll?o/
will find subjects with hallo, hello, halo, philosophy, ...
As you can imagine, this can be a _heavy_ operation on the database,
and might take quite a bit longer than a normal query; but it can be
quite useful.
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| .. | ||
| parser | ||
| tests | ||
| Makefile.am | ||
| doxyfile.in | ||
| mu-bookmarks.c | ||
| mu-bookmarks.h | ||
| mu-contacts.c | ||
| mu-contacts.h | ||
| mu-container.c | ||
| mu-container.h | ||
| mu-date.c | ||
| mu-date.h | ||
| mu-flags.c | ||
| mu-flags.h | ||
| mu-index.c | ||
| mu-index.h | ||
| mu-log.c | ||
| mu-log.h | ||
| mu-maildir.c | ||
| mu-maildir.h | ||
| mu-msg-crypto.c | ||
| mu-msg-doc.cc | ||
| mu-msg-doc.h | ||
| mu-msg-fields.c | ||
| mu-msg-fields.h | ||
| mu-msg-file.c | ||
| mu-msg-file.h | ||
| mu-msg-iter.cc | ||
| mu-msg-iter.h | ||
| mu-msg-part.c | ||
| mu-msg-part.h | ||
| mu-msg-prio.c | ||
| mu-msg-prio.h | ||
| mu-msg-priv.h | ||
| mu-msg-sexp.c | ||
| mu-msg.c | ||
| mu-msg.h | ||
| mu-query.cc | ||
| mu-query.h | ||
| mu-runtime.c | ||
| mu-runtime.h | ||
| mu-script.c | ||
| mu-script.h | ||
| mu-store-priv.hh | ||
| mu-store-read.cc | ||
| mu-store-write.cc | ||
| mu-store.cc | ||
| mu-store.h | ||
| mu-str.c | ||
| mu-str.h | ||
| mu-threader.c | ||
| mu-threader.h | ||
| mu-util.c | ||
| mu-util.h | ||