Re: t7610-mergetool.sh test failure

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On Wed, May 25, 2016 at 06:16:15PM -0500, Jeff King wrote:

> On Tue, May 24, 2016 at 09:45:25AM -0700, Junio C Hamano wrote:
> 
> > On Tue, May 24, 2016 at 9:44 AM, Armin Kunaschik
> > <megabreit@xxxxxxxxxxxxxx> wrote:
> > > t7610-mergetool.sh fails on systems without mktemp.
> > >
> > > mktemp is used in git-mergetool.sh and throws an error when it's not available.
> > > error: mktemp is needed when 'mergetool.writeToTemp' is true
> > >
> > > I see 2 options:
> > > 1. code around it, write an own mktemp, maybe use the test-mktemp as a basis.
> > > 2. disable the test when mktemp is not available
> > 
> > 3. find and install mktemp?
> 
> I'd agree more with (3) if it was some critical part of git-mergetool.
> But it seems to be a completely optional feature that we use in only one
> place, and git-mergetool even detects this case and complains.
> 
> So another alternative would be for the test to detect either that
> mergetool worked, or that we got the "mktemp is needed" error.

BTW, one thing I happened to note while looking at this: running the
test script will write into /tmp (or wherever your $TMPDIR points).
Probably not a big deal, but I wonder if we should be setting $TMPDIR in
our test harness.

-Peff
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