Proper tracking of file-level operations: rename, directories, merges

[Stephen J. Turnbull]

Ben Finney writes:
 > "Stephen J. Turnbull" <stephen at xemacs.org> writes:
 > 
 > > When git and Mercurial were born, nobody had a clue about what a DVCS
 > > UI should look like.
 > 
 > Though at that time there was at least one pretty strong example of what
 > the DVCS UI should *not* look like.
 > 
 > Vale, GNU Arch.

Uh, no.  GNU Arch didn't have a UI, really, and I don't think Tom ever
claimed it was "done", only that the direction the folks who later
defected to Bazaar wanted to take it was wrong.  (Looking at bzr
today, I sympathize with Tom. :-)  "tla" was more on the level of git
plumbing than git porcelain.  But it was a reasonable foundation for
scripting (there are a couple of decent front-ends for Emacsen, and
some generic ones that were shell-based IIRC).