lib-gpg.sh: use the $( ... ) construct for command substitution

diff --git a/t/lib-credential.sh b/t/lib-credential.sh
index 957ae936e8b785f8b1afbffd9a5918a3260d213f..9e7d7962b0678dceefb93e3706b742cbfdc5b45e 100755 (executable)
--- a/t/lib-credential.sh
+++ b/t/lib-credential.sh
@@ -281,7 +281,7 @@ helper_test_timeout() {
 cat >askpass <<\EOF
 #!/bin/sh
 echo >&2 askpass: $*
-what=`echo $1 | cut -d" " -f1 | tr A-Z a-z | tr -cd a-z`
+what=$(echo $1 | cut -d" " -f1 | tr A-Z a-z | tr -cd a-z)
 echo "askpass-$what"
 EOF
 chmod +x askpass