send-email: simplify Gmail example in the documentation

diff --git a/t/t0300-credentials.sh b/t/t0300-credentials.sh
index d7ef44b4a261a588874df3b8359d809655286a43..03bd31e9f22a1964551cb07d76c45ce90a3cd17e 100755 (executable)
--- a/t/t0300-credentials.sh
+++ b/t/t0300-credentials.sh
@@ -298,4 +298,15 @@ test_expect_success 'helpers can abort the process' '
        test_cmp expect stdout
 '
 
+test_expect_success 'empty helper spec resets helper list' '
+       test_config credential.helper "verbatim file file" &&
+       check fill "" "verbatim cmdline cmdline" <<-\EOF
+       --
+       username=cmdline
+       password=cmdline
+       --
+       verbatim: get
+       EOF
+'
+
 test_done