Merge branch 'jk/ui-color-always-to-auto-maint' into jk/ui-color-always-to-auto

* jk/ui-color-always-to-auto-maint:
  color: make "always" the same as "auto" in config
  provide --color option for all ref-filter users
  t3205: use --color instead of color.branch=always
  t3203: drop "always" color test
  t6006: drop "always" color config tests
  t7502: use diff.noprefix for --verbose test
  t7508: use test_terminal for color output
  t3701: use test-terminal to collect color output
  t4015: prefer --color to -c color.diff=always
  test-terminal: set TERM=vt100
diff --git a/t/t7301-clean-interactive.sh b/t/t7301-clean-interactive.sh
index 39212dc..1bf9789 100755
--- a/t/t7301-clean-interactive.sh
+++ b/t/t7301-clean-interactive.sh
@@ -476,7 +476,7 @@
 test_expect_success TTY 'git clean -i paints the header in HEADER color' '
 	>a.out &&
 	echo q |
-	test_terminal env TERM=vt100 git clean -i |
+	test_terminal git clean -i |
 	test_decode_color |
 	head -n 1 >header &&
 	# not i18ngrep