On Thu, Oct 24, 2013 at 12:40 PM, Junio C Hamano <gits...@pobox.com> wrote:
> Jeff King <p...@peff.net> writes:
>> That would also provide people who do not like the change of default an
>> escape hatch to keep the current behavior. And I do not think scripted
>> use will be inconvenienced; they will already have to use "." or ":/" to
>> be explicit (if they care) since the behavior is changing.
> There is a big difference between "scripted use will have an escape
> hatch" and "scripted use will not be inconvenienced".  We *know*
> scripts will be inconvenienced with or without such a configuration
> variable, as they *have* to be updated if they rely on the current
> behaviour of "git grep" that limits its search to the current
> directory when fed no pathspec (and if their users want to keep the
> current behaviour of such scripts).  Anything short of a warning (or
> even erroring out) that is designed to annoy the users during the
> transition period will help ease the pain of transition of scripts.
> An annoying warning still can only *ease*, but cannot eliminate, the
> pain of transition. The scripts need to be updated to adjust to the
> new behaviour; there is no getting around to it.
> Even if we ignore the "helping your colleague at her terminal", cf.
>     http://thread.gmane.org/gmane.comp.version-control.git/133570/focus=133683
> issue for now, adding a new configuration variable from day one
> makes the transition of scripts somewhat worse, I am afraid.  Doing
> so robs us a way to add such an annoying warning to help people
> foresee problems in their existing scripts before the default
> changes (the configuration presumably will disable the "this command
> line will behave differently after the default changes" warning).
> As I said, I think we can train people without an annoying warning,
> as hits outside their current directory will serve as an annoyance
> already, and people who set such a configuration in their repository
> (or $HOME/.gitconfig), get used to the chosen behaviour too much,
> and get surprised when they get to use a vanilla intallation of Git
> (either helping colleague or setting up a new work environment) have
> only themselves to blame, so it may not be too big a deal.
> But I do not think the same reasoning extends to scripted uses X-<.

The set of people that script "git grep" may in fact be pretty low /
almost non-existent so it may be a non-issue, but here's my one data

For git-cola, this change in behavior would not make any difference.
It already jumps to the top-level during startup so its grep feature
is unaffected.

It'd be good to hear from other script writers but that's my $.02.
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