hash: add a function to lookup hash algorithm by length

diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 3a2c6326d83b760194c600e2ccde619438200508..f5e21bf970f4dc44c7fa30d54134a15cf343ffc1 100755 (executable)
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -1437,6 +1437,7 @@ test_expect_success 'double dash "git checkout"' '
        --guess Z
        --no-guess Z
        --no-... Z
+       --overlay Z
        EOF
 '