Re: [PATCH 10/10] t/t9001-send-email.sh: get rid of unnecessary backquotes

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Am 08.01.2016 um 12:06 schrieb Elia Pinto:
Instead of making the shell expand 00* and invoke 'echo' with it,
and then capturing its output as command substitution, just use
the result of expanding 00* directly.

Signed-off-by: Elia Pinto <gitter.spiros@xxxxxxxxx>
---
  t/t9001-send-email.sh | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

I notices there are two patches in this series that touch t/t9001-send-email.sh. The other one is 9/10, and it claims to be an automated conversion. But that cannot be true because it would have removed the backquotes that are addressed in this patch.


diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index 05949a1..bcbed38 100755
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -1488,7 +1488,7 @@ test_cover_addresses () {
  	clean_fake_sendmail &&
  	rm -fr outdir &&
  	git format-patch --cover-letter -2 -o outdir &&
-	cover=`echo outdir/0000-*.patch` &&

This expands the pattern and stores the result in $cover, provided there exists at least one file that matches the pattern. If such file does not exist, the pattern is stored verbatim in $cover.

+	cover="outdir/0000-*.patch" &&

This does not expand the pattern and stores the pattern verbatim in $cover.

  	mv $cover cover-to-edit.patch &&

This line succeeds because there pattern is expanded and matches only one file.

  	perl -pe "s/^From:/$header: extra\@address.com\nFrom:/" cover-to-edit.patch >"$cover" &&

In this line, "$cover" is not expanded, and a file named '0000-*.patch' will be dropped into subdirectory 'outdir'.

  	git send-email \

The command that is truncated here looks like this:

        git send-email \
                --force \
                --from="Example <nobody@xxxxxxxxxxx>" \
                --no-to --no-cc \
                "$@" \
                --smtp-server="$(pwd)/fake.sendmail" \
                outdir/0000-*.patch \
                outdir/0001-*.patch \
                outdir/0002-*.patch \
                2>errors >out &&

Since it uses a pattern that would match a the oddly named file and since at this point the original 0000-whatever* file was moved away, the pattern still matches only one 0000-* file. The test still succeeds, so you did not notices that it has now slightly different behavior.

As much as I would like to remove a sub-process, I think it is better to keep the $(echo 0000-*) in this case.

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