patcht/lib-httpd: pass LANG to Apache

t5411 starts a web server with no explicit language setting, so it uses the system default. Ten of its tests expect it to return error messages containing the prefix "fatal: ", emitted by die(). This prefix can be localized since a1fd2cf8cd (i18n: mark message helpers prefix for translation, 2022-06-21), however. As a result these ten tests break for me on a system with LANG="de_DE.UTF-8" because the web server sends localized messages with "Schwerwiegend: " instead of "fatal: ".

Fix these tests by passing LANG to the web server, which is set to "C" by t/test-lib.sh, to get untranslated messages on both sides.

Signed-off-by: René Scharfe <l.s.r@web.de>
---
 t/lib-httpd/apache.conf | 1 +
 1 file changed, 1 insertion(+)

René Scharfe <l.s.r@web.de> writes:

It is a good thing to do, but we seem to be extra conservative and set both LC_ALL=C LANG=C (presumably by following the habit acquired back when locale support were being introduced to various systems with different degree, which way predates Git itself) and export them in the main part of the test framework.

Shouldn't we be doing the same here?

On Wed, Oct 05, 2022 at 12:50:53PM -0700, Junio C Hamano wrote:

I think setting both probably is overkill. But if we are going to set one, the important one is LC_ALL. It overrides specific LC_* variables, which in turn override LANG. So just setting LANG would get confused if LC_MESSAGES were set, for example.

That said, there probably is no downside to passing through both, so we might as well do so.

Other than that, the patch is obviously the right thing to be doing. I'm surprised it took this long for it to be a problem. ;)

-Peff

t5411 starts a web server with no explicit language setting, so it uses the system default. Ten of its tests expect it to return error messages containing the prefix "fatal: ", emitted by die(). This prefix can be localized since a1fd2cf8cd (i18n: mark message helpers prefix for translation, 2022-06-21), however. As a result these ten tests break for me on a system with LANG="de_DE.UTF-8" because the web server sends localized messages with "Schwerwiegend: " instead of "fatal: ".

Fix these tests by passing LANG and LC_ALL to the web server, which are set to "C" by t/test-lib.sh, to get untranslated messages on both sides.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: René Scharfe <l.s.r@web.de>
---
Thank you, forgot that LC_* exists..

 t/lib-httpd/apache.conf | 2 ++
 1 file changed, 2 insertions(+)

Jeff King <peff@peff.net> writes:

Yup. I suspect that the habit dates back to before LC_* was widespread and some platforms needed LANG. On modern systems that understand i18n and do not need to set NO_GETTEXT, forcing LC_ALL should be sufficient.

Thanks.