X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=t%2FREADME;h=4e1d7dd1833f43404a00b41d55800b9fe27d1807;hb=a598331f952b5bd89f72fcf20a44ab3aa2918b3f;hp=d8f6c7de6d27e27a33982e82893baa3bb5ffd7fd;hpb=5c44cc9ea29b74ed10f5f239791b2c2f9586f197;p=git.git

diff --git a/t/README b/t/README
index d8f6c7de6..4e1d7dd18 100644
--- a/t/README
+++ b/t/README
@@ -75,6 +75,19 @@ appropriately before running "make".
 	As the names depend on the tests' file names, it is safe to
 	run the tests with this option in parallel.
 
+You can also set the GIT_TEST_INSTALLED environment variable to
+the bindir of an existing git installation to test that installation.
+You still need to have built this git sandbox, from which various
+test-* support programs, templates, and perl libraries are used.
+If your installed git is incomplete, it will silently test parts of
+your built version instead.
+
+When using GIT_TEST_INSTALLED, you can also set GIT_TEST_EXEC_PATH to
+override the location of the dashed-form subcommands (what
+GIT_EXEC_PATH would be used for during normal operation).
+GIT_TEST_EXEC_PATH defaults to `$GIT_TEST_INSTALLED/git --exec-path`.
+
+
 Skipping Tests
 --------------