The interaction with unary operators and operator precedence
for && and || are better known than -a and -o, and for that
reason we prefer them. Replace all existing instances
of -a and -o to save readers from the burden of thinking
about such things.

Signed-off-by: Elia Pinto <gitter.spi...@gmail.com>
---
 contrib/examples/git-repack.sh |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/contrib/examples/git-repack.sh b/contrib/examples/git-repack.sh
index f312405..96e3fed 100755
--- a/contrib/examples/git-repack.sh
+++ b/contrib/examples/git-repack.sh
@@ -76,8 +76,8 @@ case ",$all_into_one," in
                                existing="$existing $e"
                        fi
                done
-               if test -n "$existing" -a -n "$unpack_unreachable" -a \
-                       -n "$remove_redundant"
+               if test -n "$existing" && test -n "$unpack_unreachable" && \
+                       test -n "$remove_redundant"
                then
                        # This may have arbitrary user arguments, so we
                        # have to protect it against whitespace splitting
-- 
1.7.10.4

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