test-lib: allow negation of prerequisites

diff --git a/t/t4013/diff.diff-tree_-c_--abbrev_master b/t/t4013/diff.diff-tree_-c_--abbrev_master
index 39d511a7cf2355359b10a7ce1a2ee89d03d1f5bf..b8e4aa2530717abc7d7b8bea62f12d615dfcd759 100644 (file)
--- a/t/t4013/diff.diff-tree_-c_--abbrev_master
+++ b/t/t4013/diff.diff-tree_-c_--abbrev_master
@@ -1,5 +1,5 @@
 $ git diff-tree -c --abbrev master
-176b998f5d647cbd77a9d8acf4531e930754d16d
+59d314ad6f356dd08601a4cd5e530381da3e3c64
 ::100644 100644 100644 cead32e... 7289e35... 992913c... MM     dir/sub
 ::100644 100644 100644 b414108... f4615da... 10a8a9f... MM     file0
 $