VCS comparison table

Petr Baudis pasky at
Tue Oct 17 03:40:56 BST 2006


Dear diary, on Tue, Oct 17, 2006 at 01:45:34AM CEST, I got a letter
where Johannes Schindelin <Johannes.Schindelin at> said that...
> On Mon, 16 Oct 2006, Aaron Bentley wrote:
> > As the author of two different Arch front-ends, I can say I haven't
> > found that approach satisfactory.  Invoking multiple commands tends
> > re-invoke the same validation routines over and over, killing
> > efficiency, and diagnostics tend to be pretty poorly integrated.
> Welcome to git! Git's commands are very efficient, and you can even pipe 
> them efficiently! And now that we have GIT_TRACE, diagnostics are no 
> concern.

I think Aaron rather meant that in case of an error, the error messages
may seem incoherent from the perspective of a porcelain user if it's
been generated by the plumbing. And I had that problem in Cogito as well
few times in the past, but I think most of those are reasonable now (I
can't think of a counter-example off the top of my head).

Calling multiple git commands _is_ a problem, especially in a loop, but
I think it's more the inherent fork()+execve() overhead than whatever
happens over and over when main() takes over. Many git commands got
adjusted so that you can call them just once and then feed from/to them
over longer time period.

				Petr "Pasky" Baudis
#!/bin/perl -sp0777i<X+d*lMLa^*lN%0]dsXx++lMlN/dsM0<j]dsj
$/=unpack('H*',$_);$_=`echo 16dio\U$k"SK$/SM$n\EsN0p[lN*1

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