Merge from origin/emacs-26

5bdc344 ; Reduce quoting for SELECTOR in 'make -C test' (Bug#31744)
b6b793b ; test/Makefile.in: Add TEST_INTERACTIVE option (Bug#31744).
1aa906f Make 'tags' targets respect --with-silent-rules (Bug#31744)

Conflicts:
	test/Makefile.in
	test/README

1 files changed, 10 insertions, 1 deletions

diff --git a/test/README b/test/README
index 1bfa9037ea6..83ee2614004 100644
--- a/test/README
+++ b/test/README
@@ -56,7 +56,10 @@ except the tests tagged as expensive or unstable.
 
 If your test file contains the tests "test-foo", "test2-foo" and
 "test-foo-remote", and you want to run only the former two tests, you
-could use a selector regexp: "make <filename> SELECTOR='\"foo$$\"'".
+could use a selector regexp (note that the "$" needs to be doubled to
+protect against "make" variable expansion):
+
+    make <filename> SELECTOR='"foo$$"'
 
 Note that although the test files are always compiled (unless they set
 no-byte-compile), the source files will be run when expensive or
@@ -70,6 +73,12 @@ Some tests might take long time to run.  In order to summarize the
 
     make SUMMARIZE_TESTS=<nn> ...
 
+The tests are run in batch mode by default; sometimes it's useful to
+get precisely the same environment but run in interactive mode for
+debugging.  To do that, use
+
+    make TEST_INTERACTIVE=yes ...
+
 
 (Also, see etc/compilation.txt for compilation mode font lock tests.)