Merge branch 'jc/add-i-retire-usebuiltin-config'

For over a year, setting add.interactive.useBuiltin configuration
variable did nothing but giving a "this does not do anything"
warning.  Finally remove it.

* jc/add-i-retire-usebuiltin-config:
  add-i: finally retire add.interactive.useBuiltin

Documentation/config/add.txt

@@ -5,9 +5,3 @@ add.ignore-errors (deprecated)::
 	option of linkgit:git-add[1].  `add.ignore-errors` is deprecated,
 	as it does not follow the usual naming convention for configuration
 	variables.
-
-add.interactive.useBuiltin::
-	Unused configuration variable. Used in Git versions v2.25.0 to
-	v2.36.0 to enable the built-in version of linkgit:git-add[1]'s
-	interactive mode, which then became the default in Git
-	versions v2.37.0 to v2.39.0.

builtin/add.c

@@ -150,11 +150,7 @@ static int refresh(int verbose, const struct pathspec *pathspec)
 int interactive_add(const char **argv, const char *prefix, int patch)
 {
 	struct pathspec pathspec;
-	int unused, ret;
-
-	if (!git_config_get_bool("add.interactive.usebuiltin", &unused))
-		warning(_("the add.interactive.useBuiltin setting has been removed!\n"
-			  "See its entry in 'git help config' for details."));
+	int ret;
 
 	parse_pathspec(&pathspec, 0,
 		       PATHSPEC_PREFER_FULL |

t/t3701-add-interactive.sh

@@ -43,21 +43,6 @@ force_color () {
 	)
 }
 
-test_expect_success 'warn about add.interactive.useBuiltin' '
-	cat >expect <<-\EOF &&
-	warning: the add.interactive.useBuiltin setting has been removed!
-	See its entry in '\''git help config'\'' for details.
-	EOF
-	echo "No changes." >expect.out &&
-
-	for v in = =true =false
-	do
-		git -c "add.interactive.useBuiltin$v" add -p >out 2>actual &&
-		test_cmp expect.out out &&
-		test_cmp expect actual || return 1
-	done
-'
-
 test_expect_success 'unknown command' '
 	test_when_finished "git reset --hard; rm -f command" &&
 	echo W >command &&