Note: The "Base revision" column was useful for older versions of subversion where it was useful to track the SVN revision of the branch point. With git it's easy to find the branch point, but we've kept the column here for branches which originated in SVN in case it's useful when doing source archaeology (the SVN to git conversion may not have always perfectly translated the SVN history).

Active Branches

These are the known currently active branches:

Name	Base revision	Status	Owner	Description
main	-	Development	-	2.x development (until we make a RELEASE/2 branch).
1.4	-	Maintenance	-	Maintenance of the 1.4 release series.

Branches with possible unresolved changes

These branches haven't been merged (or not fully merged) but haven't been formerly retired - it's possible there are still useful changes on these.

Name	Base revision	Status	Owner	Description
matchspy	svnmerge	Experimental	Richard	MatchSpy classes implementing facet selection and tag reporting. See ticket #199 for details.
geospatial	svnmerge	Experimental	Richard	Geospatial matching (e.g. distance restriction on results). Geospatial support was merged in dbd42ffed2d76a79d505242b32a357246ab63348 but some additional more experimental features are only here. Note: see ticket #481 for details, and an up-to-date(?) patch
brass-btree	svnmerge	Development	Olly	Developing a new B-tree manager for the glass backend. I think the useful parts were merged but should check if there's anything of interest here still.
2009-documentation-changes	?	?	James	Working on documentation changes to fit in a redesigned website(?)

These branches have a similar status, but are in external git repos:

Name	Status	Owner	Description
​nsmetanin	Development	Nikita Smetanin	Spelling Correction Improvements project for GSoC 2011
​atia	Development	Dai Youli	Chinese Segmentation Analysis project for GSoC 2011

Inactive Branches

These branches are no longer active:

Name	Branch-point	Status	Owner	Description
1.2	Not recorded	Retired		Maintenance of the 1.2 release series.
1.0	Not recorded	Retired		Maintenance of the 1.0 release series.
0.9	Not recorded	Retired		Maintenance of the 0.9 release series.
0.5	Not recorded	Retired		Maintenance of the 0.5 release series.
clustering	svnmerge	Developed further and merged for Xapian 2.0.0	Richard	Clustering algorithms. Developed during GSoC 2016 and 2017 and merged to git master.
imgseek	12287	Experimental	Richard	Image content matching, based on imgseek.
coloursim	svnmerge	Experimental	Richard	Experiments with colour similarity matching.
lemur-ogs-hack	?	?	Tom	"nasty application-specific hack to generate external weights from value-based expressions and allow this to be used remotely using a special term prefix"
xappy	svnmerge	Obsolete	Richard	Branch combining patches from trac tickets and feature branches to be used with xappy, which is no longer being developed
postingsources	13195	Mainly merged for 1.1.3.	Richard	Now contains only the LimitedValueWeightPostingSource.
​sabrina	Not recorded	Fully merged	Xiaona Han	Support Lua project for GSoC 2011