tests: disallow the use of abbreviated options (by default)

diff --git a/t/README b/t/README
index 656288edcea5a23a5893ade5c2d81ee429eb26e8..9ed3051a1cc662208cd84afbd4817f1abbc7f5f5 100644 (file)
--- a/t/README
+++ b/t/README
@@ -399,6 +399,10 @@ GIT_TEST_SIDEBAND_ALL=<boolean>, when true, overrides the
 fetch-pack to not request sideband-all (even if the server advertises
 sideband-all).
 
+GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS=<boolean>, when true (which is
+the default when running tests), errors out when an abbreviated option
+is used.
+
 Naming Tests
 ------------