On Sun, Feb 21, 2016 at 06:19:14PM -0500, Jeff King wrote:
> On Sun, Feb 21, 2016 at 04:01:27PM -0500, Eric Sunshine wrote:
>
> > On Sun, Feb 21, 2016 at 12:32 PM, John Keeping <j...@keeping.me.uk> wrote:
> > > GNU grep 2.23 detects the input used in this test as binary data so it
> > > does not work for extracting lines from a file. We could add the "-a"
> > > option to force grep to treat the input as text, but not all
> > > implementations support that. Instead, use sed to extract the desired
> > > lines since it will always treat its input as text.
> > >
> > > While touching these lines, modernize the test style to avoid hiding the
> > > exit status of "git blame" and remove a space following a redirection
> > > operator.
> > >
> > > Signed-off-by: John Keeping <j...@keeping.me.uk>
> > > ---
> > > diff --git a/t/t8005-blame-i18n.sh b/t/t8005-blame-i18n.sh
> > > @@ -35,8 +35,8 @@ EOF
> > > test_expect_success !MINGW \
> > > 'blame respects i18n.commitencoding' '
> > > - git blame --incremental file | \
> > > - egrep "^(author|summary) " > actual &&
> > > + git blame --incremental file >output &&
> > > + sed -ne "/^\(author\|summary\) /p" output >actual &&
> >
> > These tests all crash and burn with BSD sed (including Mac OS X) since
> > you're not restricting yourself to BRE (basic regular expressions).
> > You _could_ request extended regular expressions, which do work on
> > those platforms, as well as with GNU sed:
> >
> > sed -nEe "/^(author|summary) /p" ...
>
> At that point, I think we may as well use grep, because obscure
> platforms are probably broken either way.
Also GNU sed doesn't understand "-E", it uses "-r" for --regexp-extended.
> I'm tempted to just go the perl route. We already depend on at least a
> baisc version of perl5 being installed for many of the other tests, so
> it's not really introducing a new dependency.
>
> Something like the patch below works for me. I think we could make it
> shorter by using $PERLIO to get the raw behavior, but using binmode will
> work even on ancient versions of perl.
>
> John, if you agree on the direction, feel free to combine it with your
> patch.
My original sed version was:
sed -ne "/^author /p" -e "/^summary /p"
which I think will work on all platforms (we already use it in
t0000-basic.sh) but then I decided to be too clever :-(
I still think sed is simpler than introducing a new function to wrap a
perl script.
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