Am 11.11.2016 um 22:07 schrieb Junio C Hamano:
Junio C Hamano <gits...@pobox.com> writes:

OK, then let's have

        filter_git () {
                rm -f rot13-filter.log &&
                git "$@"
                ...

and call that -rc1.

That is, to queue this on top of ls/filter-process and merge it
down.

-- >8 --
Subject: t0021: remove debugging cruft

The redirection of the standard error stream to a temporary file is
a leftover cruft during debugging.  Remove it.

Besides, it is reported by folks on the Windows that the test is
flaky with this redirection; somebody gets confused and this
merely-redirected-to file gets marked as delete-pending by git.exe
and makes it finish with a non-zero exit status when "git checkout"
finishes.  Windows folks may want to figure that one out, but for
the purpose of this test, it shouldn't become a show-stopper.

Signed-off-by: Junio C Hamano <gits...@pobox.com>

Nicely summarized! Thank you very much!

I've double-checked again that the redirection is really not used by the tests. The name does occur in a .gitignore, but I guess that is not important for the background filter process. It would be good if Lars could confirm this.

---
 t/t0021-conversion.sh | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index cb72fa49de..5ce2535017 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -27,8 +27,7 @@ file_size () {

 filter_git () {
        rm -f rot13-filter.log &&
-       git "$@" 2>git-stderr.log &&
-       rm -f git-stderr.log
+       git "$@"
 }

 # Compare two files and ensure that `clean` and `smudge` respectively are


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