On 25 October 2013 15:13, Junio C Hamano <gits...@pobox.com> wrote:
> Milton Soares Filho <milton.soares.fi...@gmail.com> writes:
>>     git log --graph --oneline
>>     * a1
>>     * a2
>>     x a3
>>     * b1
>>     * b2
>>     x b3
> I agree that the problem you are trying to solve is a good thing to
> tackle, and I also agree that marking a root commit differently from
> other commits is one way to solve it, but I am not sure if that is
> the best way.  If the stretches of a's and b's in your history are
> very long, wouldn't it be easier to spot if they are painted in
> different colours, in addition to or instead of marking the roots
> differently [*1*], for example?

Thanks for taking your time reviewing this patch, Junio. I didn't really thought
it would get any attention since multiple root-commits is not a very common
use-case[1]. However, if most people got excited with git-subtree new
features as I did, there is a good chance that multiple root-commits are
going to become a common-place in the near future ;-)

That said, I completely agree that painting with different colors would be
a much better fix, however I believe that it can be done in a separate
changeset by someone that understands better the impact on the rest
of the system. Personally, changing only the mark is sufficient because:

a) it'll work on terminal types without coloring support and configurations
    whose explicitly disable it
b) it'll spare myself of running a separate GUI program just
    to spot where each series begin
c) it won't require any visual design skills from a developer (me)
    without a minimal sense for it :-)

By the way, is there a visual or design guideline document for building
decorated log graphs? From where comes the inspiration of it?

> The change implemented your way will lose other information when a
> root commit is at the boundary, marked as uninteresting, or on the
> left/right side of traversal (when --left-right is requested).  I
> think these pieces of information your patch seems to be losing are
> a lot more relevant than "have we hit the root?", especially in the
> majority of repositories where there is only one root commit.

Nice. I'll try to move the logic into get_revision_mark() and hope
the priority on handling it is better suited.

> [...]
> and I even suspect that it may be asking for the moon---you may not
> even know what root "a1" (and "b1") came from when you are showing
> these commits without first digging down to the roots and then
> walking the history backwards, which may not be practically
> feasible.

It'd be nice to figure out a test-case to emerge it.

[]s, milton

[1]: In git  repository itself I could find only seven of them (root-commis)
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