t5562: gzip -k is not portable

t5562: gzip -k is not portable

[Torsten Bögershausen]

Hej Max,

t5562 fails here under MacOS:
"gzip -k"  is not portable.

The following works (there may be better solutions, I didn't dig into 
the test code)

diff --git a/t/t5562-http-backend-content-length.sh 
b/t/t5562-http-backend-content-length.sh
index 8040d80e04..7befe3885c 100755
--- a/t/t5562-http-backend-content-length.sh
+++ b/t/t5562-http-backend-content-length.sh
@@ -61,9 +61,13 @@ test_expect_success 'setup' '
  '

  test_expect_success GZIP 'setup, compression related' '
-       gzip -k fetch_body &&
+       cp fetch_body f &&
+       gzip fetch_body &&
+       mv f fetch_body &&
         test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
-       gzip -k push_body &&
+       cp push_body f &&
+       gzip push_body &&
+       mv f push_body &&
         test_copy_bytes 10 <push_body.gz >push_body.gz.trunc

Re: t5562: gzip -k is not portable

[Junio C Hamano]

Torsten Bögershausen <tboegi@web.de> writes:

> Hej Max,
>
> t5562 fails here under MacOS:
> "gzip -k"  is not portable.

Sigh.  Perhaps -c would help.  Or do BSD implementations also lack -c?

 t/t5562-http-backend-content-length.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/t/t5562-http-backend-content-length.sh b/t/t5562-http-backend-content-length.sh
index 8040d80e04..98b6543827 100755
--- a/t/t5562-http-backend-content-length.sh
+++ b/t/t5562-http-backend-content-length.sh
@@ -61,9 +61,9 @@ test_expect_success 'setup' '
 '
 
 test_expect_success GZIP 'setup, compression related' '
-	gzip -k fetch_body &&
+	gzip -c fetch_body >fetch_body.gz &&
 	test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
-	gzip -k push_body &&
+	gzip -c push_body >push_body.gz &&
 	test_copy_bytes 10 <push_body.gz >push_body.gz.trunc
 '
 

Re: t5562: gzip -k is not portable

[Eric Sunshine]

On Tue, Jun 19, 2018 at 2:06 PM Junio C Hamano <gitster@pobox.com> wrote:
> Torsten Bögershausen <tboegi@web.de> writes:
> > t5562 fails here under MacOS:
> > "gzip -k"  is not portable.

Very odd. Stock /usr/bin/gzip on my MacOS 10.12.6 _does_ recognize -k,
and the test does pass.

> Sigh.  Perhaps -c would help.  Or do BSD implementations also lack -c?

MacOS and BSD do support -c, so this solution would also work (and is
"cleaner" the the other proposal).

> diff --git a/t/t5562-http-backend-content-length.sh b/t/t5562-http-backend-content-length.sh
> @@ -61,9 +61,9 @@ test_expect_success 'setup' '
>  test_expect_success GZIP 'setup, compression related' '
> -       gzip -k fetch_body &&
> +       gzip -c fetch_body >fetch_body.gz &&
>         test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
> -       gzip -k push_body &&
> +       gzip -c push_body >push_body.gz &&
>         test_copy_bytes 10 <push_body.gz >push_body.gz.trunc
>  '

Re: t5562: gzip -k is not portable

[Torsten Bögershausen]

On 06/19/2018 08:22 PM, Eric Sunshine wrote:
> On Tue, Jun 19, 2018 at 2:06 PM Junio C Hamano <gitster@pobox.com> wrote:
>> Torsten Bögershausen <tboegi@web.de> writes:
>>> t5562 fails here under MacOS:
>>> "gzip -k"  is not portable.
> Very odd. Stock /usr/bin/gzip on my MacOS 10.12.6 _does_ recognize -k,
> and the test does pass.

This is the test box running Mac OS X 10.6 speaking.
The -c seems to need even -f.
But this doesn't work either:

gzip 1.3.12
Copyright (C) 2007 Free Software Foundation, Inc.
Copyright (C) 1993 Jean-loup Gailly.
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.

Written by Jean-loup Gailly.
prerequisite GZIP ok
expecting success:
     gzip -f -c fetch_body >fetch_body.gz &&
     test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
     gzip -f -c push_body >push_body,gz &&
     test_copy_bytes 10 <push_body.gz >push_body.gz.trunc

./test-lib.sh: line 632: push_body.gz: No such file or directory
not ok 2 - setup, compression related
#
#        gzip -f -c fetch_body >fetch_body.gz &&
#        test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
#        gzip -f -c push_body >push_body,gz &&
#        test_copy_bytes 10 <push_body.gz >push_body.gz.trunc
#


>> Sigh.  Perhaps -c would help.  Or do BSD implementations also lack -c?
> MacOS and BSD do support -c, so this solution would also work (and is
> "cleaner" the the other proposal).
>
>> diff --git a/t/t5562-http-backend-content-length.sh b/t/t5562-http-backend-content-length.sh
>> @@ -61,9 +61,9 @@ test_expect_success 'setup' '
>>   test_expect_success GZIP 'setup, compression related' '
>> -       gzip -k fetch_body &&
>> +       gzip -c fetch_body >fetch_body.gz &&
>>          test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
>> -       gzip -k push_body &&
>> +       gzip -c push_body >push_body.gz &&
>>          test_copy_bytes 10 <push_body.gz >push_body.gz.trunc
>>   '

Re: t5562: gzip -k is not portable

[Rodrigo Campos]

On Tue, Jun 19, 2018 at 10:40:16PM +0200, Torsten Bögershausen wrote:
> 
> 
> On 06/19/2018 08:22 PM, Eric Sunshine wrote:
> > On Tue, Jun 19, 2018 at 2:06 PM Junio C Hamano <gitster@pobox.com> wrote:
> > > Torsten Bögershausen <tboegi@web.de> writes:
> > > > t5562 fails here under MacOS:
> > > > "gzip -k"  is not portable.
> > Very odd. Stock /usr/bin/gzip on my MacOS 10.12.6 _does_ recognize -k,
> > and the test does pass.
> 
> gzip 1.3.12

Oh, this seems to be the issue. As I've said in my prvious email, the first
version to include this was 1.6 IIRC.

The commit adding it is here[1]. But yeah, it was not added 20 years ago, and it
seems there are systems with such old versions of gzip (although can probably
update? Don't know much about mac) :-(


[1]: http://git.savannah.gnu.org/cgit/gzip.git/commit/?id=0192f02e26ac9fa0a27ed177263ee3ea73d5e95c

Re: t5562: gzip -k is not portable

[Jeff King]

On Tue, Jun 19, 2018 at 10:40:16PM +0200, Torsten Bögershausen wrote:

> 
> 
> On 06/19/2018 08:22 PM, Eric Sunshine wrote:
> > On Tue, Jun 19, 2018 at 2:06 PM Junio C Hamano <gitster@pobox.com> wrote:
> > > Torsten Bögershausen <tboegi@web.de> writes:
> > > > t5562 fails here under MacOS:
> > > > "gzip -k"  is not portable.
> > Very odd. Stock /usr/bin/gzip on my MacOS 10.12.6 _does_ recognize -k,
> > and the test does pass.
> 
> This is the test box running Mac OS X 10.6 speaking.
> The -c seems to need even -f.
> But this doesn't work either:
> 
> gzip 1.3.12
> Copyright (C) 2007 Free Software Foundation, Inc.
> Copyright (C) 1993 Jean-loup Gailly.
> This is free software.  You may redistribute copies of it under the terms of
> the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
> There is NO WARRANTY, to the extent permitted by law.

Ah, that's it. "-k" came about in gzip v1.6. That's 5 years old, but
obviously some people are still running it.

"-c" goes back quite a while and should be safe, I think.

> expecting success:
>     gzip -f -c fetch_body >fetch_body.gz &&
>     test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
>     gzip -f -c push_body >push_body,gz &&
>     test_copy_bytes 10 <push_body.gz >push_body.gz.trunc
> 
> ./test-lib.sh: line 632: push_body.gz: No such file or directory

Typo in the ">" redirect (comma instead of period)?

-Peff

Re: t5562: gzip -k is not portable

[Torsten Bögershausen]

On Tue, Jun 19, 2018 at 04:53:10PM -0400, Jeff King wrote:
> On Tue, Jun 19, 2018 at 10:40:16PM +0200, Torsten Bögershausen wrote:
> 
> > 
> > 
> > On 06/19/2018 08:22 PM, Eric Sunshine wrote:
> > > On Tue, Jun 19, 2018 at 2:06 PM Junio C Hamano <gitster@pobox.com> wrote:
> > > > Torsten Bögershausen <tboegi@web.de> writes:
> > > > > t5562 fails here under MacOS:
> > > > > "gzip -k"  is not portable.
> > > Very odd. Stock /usr/bin/gzip on my MacOS 10.12.6 _does_ recognize -k,
> > > and the test does pass.
> > 
> > This is the test box running Mac OS X 10.6 speaking.
> > The -c seems to need even -f.
> > But this doesn't work either:
> > 
> > gzip 1.3.12
> > Copyright (C) 2007 Free Software Foundation, Inc.
> > Copyright (C) 1993 Jean-loup Gailly.
> > This is free software.  You may redistribute copies of it under the terms of
> > the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
> > There is NO WARRANTY, to the extent permitted by law.
> 
> Ah, that's it. "-k" came about in gzip v1.6. That's 5 years old, but
> obviously some people are still running it.
> 
> "-c" goes back quite a while and should be safe, I think.
> 
> > expecting success:
> >     gzip -f -c fetch_body >fetch_body.gz &&
> >     test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
> >     gzip -f -c push_body >push_body,gz &&
> >     test_copy_bytes 10 <push_body.gz >push_body.gz.trunc
> > 
> > ./test-lib.sh: line 632: push_body.gz: No such file or directory
> 
> Typo in the ">" redirect (comma instead of period)?
> 
> -Peff

Good eyes, thanks.
The "-f -c" combo works:

-       gzip -k fetch_body &&
+       gzip -f -c fetch_body >fetch_body.gz &&
        test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
-       gzip -k push_body &&
+       gzip -f -c push_body >push_body.gz &&

Re: t5562: gzip -k is not portable

[Jeff King]

On Wed, Jun 20, 2018 at 08:13:06AM +0200, Torsten Bögershausen wrote:

> Good eyes, thanks.
> The "-f -c" combo works:
> 
> -       gzip -k fetch_body &&
> +       gzip -f -c fetch_body >fetch_body.gz &&
>         test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
> -       gzip -k push_body &&
> +       gzip -f -c push_body >push_body.gz &&

Do we still need "-f"?  With "-c" gzip is only writing to stdout, so we
should not need to force anything.

-Peff

Re: t5562: gzip -k is not portable

[Torsten Bögershausen]

On Wed, Jun 20, 2018 at 08:40:06AM -0400, Jeff King wrote:
> On Wed, Jun 20, 2018 at 08:13:06AM +0200, Torsten Bögershausen wrote:
> 
> > Good eyes, thanks.
> > The "-f -c" combo works:
> > 
> > -       gzip -k fetch_body &&
> > +       gzip -f -c fetch_body >fetch_body.gz &&
> >         test_copy_bytes 10 <fetch_body.gz >fetch_body.gz.trunc &&
> > -       gzip -k push_body &&
> > +       gzip -f -c push_body >push_body.gz &&
> 
> Do we still need "-f"?  With "-c" gzip is only writing to stdout, so we
> should not need to force anything.
> 
> -Peff

You are rigth, -f is not needed.

I was confusing stdout with terminal :-( 
Most often stdout is the terminal, but not here of course.

Re: t5562: gzip -k is not portable

[Rodrigo Campos]

On Tue, Jun 19, 2018 at 07:25:15PM +0200, Torsten Bögershausen wrote:
> Hej Max,
> 
> t5562 fails here under MacOS:
> "gzip -k"  is not portable.

What do you mean with is not portable?

I wrote the patch for gzip[1]. That was in 2013, and is included since version
1.6 IIUC:

	$ git tag --contains 0192f02e26ac9fa0a27ed177263ee3ea73d5e95c
	v1.6
	v1.7
	v1.8
	v1.9

But that maybe is too new? Or do you mean something else?

[1]: http://git.savannah.gnu.org/cgit/gzip.git/commit/?id=0192f02e26ac9fa0a27ed177263ee3ea73d5e95c