patch 8.2.0290: running individual test differs from all tests
Problem: Running individual test differs from all tests.
Solution: Pass on environment variables. (Yee Cheng Chin, closes #5672)
diff --git a/src/testdir/README.txt b/src/testdir/README.txt
index 76396fe..d639146 100644
--- a/src/testdir/README.txt
+++ b/src/testdir/README.txt
@@ -25,6 +25,8 @@
bit faster, because Vim doesn't have to be started, one Vim instance runs many
tests.
+At 4), to run a test in GUI, add "GUI_FLAG=-g" to the make command.
+
What you can use (see test_assert.vim for an example):