On Mon, Jun 10, 2013 at 12:28:55PM -0700, Junio C Hamano wrote:
> John Keeping <j...@keeping.me.uk> writes:
> > I think the first thing to do is read the "diff.algorithm" setting in
> > git-add--interactive and pass its value to the underlying diff-index and
> > diff-files commands, but should we also have a command line parameter to
> > git-add to specify the diff algorithm in interactive mode? And if so,
> > can we simply add "--diff-algorithm" to git-add, or is that too
> > confusing?
> Making "git add--interactive" read from diff.algorithm is probably a
> good idea, because the command itself definitely is a Porcelain. We
> would probably need a way to defeat the configured default for
> completeness, either:
> git add -p --diff-algorithm=default
> git -c diff.algorithm=default add -p
> but I suspect that a new option to "git add" that only takes effect
> together with "-p" is probably an overkill, only in order to support
> the former and not having to say the latter, but I can be persuaded
> either way.
Worse than that, you would need to add such an option to "checkout -p",
"reset -p", "stash -p", etc. I think the latter form you suggest is
probably acceptable in this case.
Overall, I think respecting diff.algorithm in add--interactive is a very
sane thing to do. I would even be tempted to say we should allow a few
other select diff options (e.g., fewer or more context lines). If you
allowed diff options like this:
git add --patch="--patience -U5"
that is very flexible, but I would not want to think about what the code
does when you pass --patch="--raw" or equal nonsense.
But I cannot off the top of my head think of other options besides -U
that would be helpful. I have never particularly wanted it for "add -p",
either, though I sometimes generate patches to the list with a greater
number of context lines when I think it makes the changes to a short
function more readable.
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