t/README: hint about using $(pwd) rather than $PWD in tests

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 19857f4326aa491a4c7d292900a0a766e7c45f80..9a665205884fcdb1c5888558d6edf960e335e013 100755 (executable)
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -210,6 +210,9 @@ log -m -p master
 log -SF master
 log -S F master
 log -SF -p master
+log -GF master
+log -GF -p master
+log -GF -p --pickaxe-all master
 log --decorate --all
 log --decorate=full --all