submodule deinit: clarify work tree removal message

The output of "git submodule deinit sub" of a populated submodule prints

  rm 'sub'

as the first line unless used with the -f option.

The "rm 'sub'" line is exactly the same output the user gets when using
"git rm sub" (because that command is used with the --dry-run option under
the hood to determine if the submodule is clean), which can easily lead to
the false impression that the submodule would be permanently removed. Also
users might be confused that the "rm 'submodule'" line won't show up when
the -f option is used, as the test is skipped in this case.

Silence the "rm 'submodule'" output by using the --quiet option for "git
rm" and always print

  Cleared directory 'submodule'

instead as the first output line. This line is printed as long as the
directory exists, no matter if empty or not.

Also extend the tests in t7400 to make sure the "Cleared directory" line
is printed correctly.

Reported-by: Phil Hord <phil.hord@gmail.com>
Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-submodule.sh

@@ -570,10 +570,12 @@ cmd_deinit()
 
 			if test -z "$force"
 			then
-				git rm -n "$sm_path" ||
+				git rm -qn "$sm_path" ||
 				die "$(eval_gettext "Submodule work tree '\$sm_path' contains local modifications; use '-f' to discard them")"
 			fi
-			rm -rf "$sm_path" || say "$(eval_gettext "Could not remove submodule work tree '\$sm_path'")"
+			rm -rf "$sm_path" &&
+			say "$(eval_gettext "Cleared directory '\$sm_path'")" ||
+			say "$(eval_gettext "Could not remove submodule work tree '\$sm_path'")"
 		fi
 
 		mkdir "$sm_path" || say "$(eval_gettext "Could not create empty submodule directory '\$sm_path'")"

t/t7400-submodule-basic.sh

@@ -776,18 +776,22 @@ test_expect_success 'submodule deinit . deinits all initialized submodules' '
 	git config submodule.example.foo bar &&
 	git config submodule.example2.frotz nitfol &&
 	test_must_fail git submodule deinit &&
-	git submodule deinit . &&
+	git submodule deinit . >actual &&
 	test -z "$(git config --get-regexp "submodule\.example\.")" &&
 	test -z "$(git config --get-regexp "submodule\.example2\.")" &&
+	test_i18ngrep "Cleared directory .init" actual &&
+	test_i18ngrep "Cleared directory .example2" actual &&
 	rmdir init example2
 '
 
 test_expect_success 'submodule deinit deinits a submodule when its work tree is missing or empty' '
 	git submodule update --init &&
 	rm -rf init example2/* example2/.git &&
-	git submodule deinit init example2 &&
+	git submodule deinit init example2 >actual &&
 	test -z "$(git config --get-regexp "submodule\.example\.")" &&
 	test -z "$(git config --get-regexp "submodule\.example2\.")" &&
+	test_i18ngrep ! "Cleared directory .init" actual &&
+	test_i18ngrep "Cleared directory .example2" actual &&
 	rmdir init
 '
 
@@ -797,8 +801,9 @@ test_expect_success 'submodule deinit fails when the submodule contains modifica
 	test_must_fail git submodule deinit init &&
 	test -n "$(git config --get-regexp "submodule\.example\.")" &&
 	test -f example2/.git &&
-	git submodule deinit -f init &&
+	git submodule deinit -f init >actual &&
 	test -z "$(git config --get-regexp "submodule\.example\.")" &&
+	test_i18ngrep "Cleared directory .init" actual &&
 	rmdir init
 '
 
@@ -808,8 +813,9 @@ test_expect_success 'submodule deinit fails when the submodule contains untracke
 	test_must_fail git submodule deinit init &&
 	test -n "$(git config --get-regexp "submodule\.example\.")" &&
 	test -f example2/.git &&
-	git submodule deinit -f init &&
+	git submodule deinit -f init >actual &&
 	test -z "$(git config --get-regexp "submodule\.example\.")" &&
+	test_i18ngrep "Cleared directory .init" actual &&
 	rmdir init
 '
 
@@ -822,23 +828,28 @@ test_expect_success 'submodule deinit fails when the submodule HEAD does not mat
 	test_must_fail git submodule deinit init &&
 	test -n "$(git config --get-regexp "submodule\.example\.")" &&
 	test -f example2/.git &&
-	git submodule deinit -f init &&
+	git submodule deinit -f init >actual &&
 	test -z "$(git config --get-regexp "submodule\.example\.")" &&
+	test_i18ngrep "Cleared directory .init" actual &&
 	rmdir init
 '
 
 test_expect_success 'submodule deinit is silent when used on an uninitialized submodule' '
 	git submodule update --init &&
 	git submodule deinit init >actual &&
 	test_i18ngrep "Submodule .example. (.*) unregistered for path .init" actual &&
+	test_i18ngrep "Cleared directory .init" actual &&
 	git submodule deinit init >actual &&
 	test_i18ngrep ! "Submodule .example. (.*) unregistered for path .init" actual &&
+	test_i18ngrep "Cleared directory .init" actual &&
 	git submodule deinit . >actual &&
 	test_i18ngrep ! "Submodule .example. (.*) unregistered for path .init" actual &&
 	test_i18ngrep "Submodule .example2. (.*) unregistered for path .example2" actual &&
+	test_i18ngrep "Cleared directory .init" actual &&
 	git submodule deinit . >actual &&
 	test_i18ngrep ! "Submodule .example. (.*) unregistered for path .init" actual &&
 	test_i18ngrep ! "Submodule .example2. (.*) unregistered for path .example2" actual &&
+	test_i18ngrep "Cleared directory .init" actual &&
 	rmdir init example2
 '