Re: [PATCH 06/15] submodule init: redirect stdout to stderr

> Stefan Beller <sbeller@google.com> writes:
>
>> Reroute the output of stdout to stderr as it is just informative
>> messages, not to be consumed by machines.
>>
>> We want to init submodules from the helper for `submodule update`
>> in a later patch and the stdout output of said helper is consumed
>> by the parts of `submodule update` which are still written in shell.
>> So we have to be careful which messages are on stdout.
>>
>> Signed-off-by: Stefan Beller <sbeller@google.com>
>> ---
>
> I do not mind if this step is split out and queued as a separate
> follow-up to sb/submodule-init.  The grouping and labelling is a
> bigger and more important change that deserves attention without
> distraction than this single step, and making as many such things
> graduate and allowing us to forget about them is better ;-)

>
>>  builtin/submodule--helper.c |  3 ++-
>>  t/t7406-submodule-update.sh | 24 ++++++++++++++++++------
>>  2 files changed, 20 insertions(+), 7 deletions(-)
>>
>> diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
>> index 23d7224..7b9a4d7 100644
>> --- a/builtin/submodule--helper.c
>> +++ b/builtin/submodule--helper.c
>> @@ -362,7 +362,8 @@ static void init_submodule(const char *path, const char *prefix, int quiet)
>>                       die(_("Failed to register url for submodule path '%s'"),
>>                           displaypath);
>>               if (!quiet)
>> -                     printf(_("Submodule '%s' (%s) registered for path '%s'\n"),
>> +                     fprintf(stderr,
>> +                             _("Submodule '%s' (%s) registered for path '%s'\n"),
>>                               sub->name, url, displaypath);
>>       }
>>
>> diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
>> index fd741f5..5f27879 100755
>> --- a/t/t7406-submodule-update.sh
>> +++ b/t/t7406-submodule-update.sh
>> @@ -108,24 +108,36 @@ pwd=$(pwd)
>>
>>  cat <<EOF >expect
>>  Submodule path '../super': checked out '$supersha1'
>> -Submodule 'merging' ($pwd/merging) registered for path '../super/merging'
>> -Submodule 'none' ($pwd/none) registered for path '../super/none'
>> -Submodule 'rebasing' ($pwd/rebasing) registered for path '../super/rebasing'
>> -Submodule 'submodule' ($pwd/submodule) registered for path '../super/submodule'
>>  Submodule path '../super/merging': checked out '$mergingsha1'
>>  Submodule path '../super/none': checked out '$nonesha1'
>>  Submodule path '../super/rebasing': checked out '$rebasingsha1'
>>  Submodule path '../super/submodule': checked out '$submodulesha1'
>>  EOF
>>
>> +cat <<EOF >expect2
>> +Submodule 'merging' ($pwd/merging) registered for path '../super/merging'
>> +Submodule 'none' ($pwd/none) registered for path '../super/none'
>> +Submodule 'rebasing' ($pwd/rebasing) registered for path '../super/rebasing'
>> +Submodule 'submodule' ($pwd/submodule) registered for path '../super/submodule'
>> +Cloning into '$pwd/recursivesuper/super/merging'...
>> +done.
>> +Cloning into '$pwd/recursivesuper/super/none'...
>> +done.
>> +Cloning into '$pwd/recursivesuper/super/rebasing'...
>> +done.
>> +Cloning into '$pwd/recursivesuper/super/submodule'...
>> +done.
>> +EOF
>> +
>>  test_expect_success 'submodule update --init --recursive from subdirectory' '
>>       git -C recursivesuper/super reset --hard HEAD^ &&
>>       (cd recursivesuper &&
>>        mkdir tmp &&
>>        cd tmp &&
>> -      git submodule update --init --recursive ../super >../../actual
>> +      git submodule update --init --recursive ../super >../../actual 2>../../actual2
>>       ) &&
>> -     test_cmp expect actual
>> +     test_cmp expect actual &&
>> +     test_cmp expect2 actual2
>>  '
>>
>>  apos="'";