Terror of the Reposturgeon!

I’ve just shipped reposurgeon 2.0, a power tool for editing and interconverting version-control repositories. This is a major release, adding the capability to read Subversion dump files directly.

I’ve blogged about this project before, highlights at 1 2 3 4 5 6 7 8.

Development had gotten stalled for six months because of a really insidious bug in the handling of Subversion dumps with certain odd sorts of multibranch histories. But recently one Greg Hudson sent me a performance-enhancement patch that enabled me to get rid of an O(n**2) lookup function deep in the code – and, as I had suspected since it first popped up, the bug was in that lookup function. (No, I still don’t know exactly where – it was something subtle.)

I’m shipping this now, before my previous target of when the NUT project guys sign off on their repo conversion, because I want people to stop using the older versions. 99 out of 100 times they would be OK, but that 100th time could be nasty.

Fear the reposturgeon!