J. Bruce Fields wrote:
> On Sat, Jul 01, 2006 at 05:09:26PM +0200, Rene Scharfe wrote:
>> +Another special notation is <commit1>...<commit2> which is useful for
>> +merges. The resulting set of commits is the symmetric difference
>> +between the two operands. The following two commands are equivalent:
>
> What's the logic behind naming the operator "..."?
>
> Seems like asking for trouble to have two visually similar operators (".." and
> "...") with different meanings, and "..." seems like kind of an arbitrary
> choice anyway.
Because A...B is extension of A..B for merges.
> A symmetric difference is basically equivalent to an xor--would a carat ("^")
> work? Or could we just stick a word there instead of using some tricky
> notation?
Caret is used twice, with different meaning. As prefix operator "^" means
"exclude lineage of commit" (while commit without "^" in front means:
"include lineage of commit and commit itself"). BTW. why we don't use '!'
for that?
As postfix operator "^" means "dereference", i.e. parent in the case
of commit; allows choosing a parent (commit^n) and listing all parents
(commit^@). Using it as binary infix operator that would be I think
too much.
--
Jakub Narebski
Warsaw, Poland
ShadeHawk on #git
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