Git正在忽略。父目录中的gitignore文件

我有一个这样的结构:

projects/
    .gitignore
    foo/
        some_file
    bar/
        another_file

foo , bar , 和 projects 是git项目。在里面 .gitignore 我有 * (事实上我试了很多东西),但是当我跑的时候 git status 在…内 projects/foo 它仍然告诉我要添加 some_file . 如果我在读 .gitignore 文档正确,它说Git应该在所有父文件夹中查找 .gitignore 文件并使用它们。然而,它似乎完全忽略了 .gitignore . 这是怎么回事?

我试过了 git check-ignore 它的行为就像 .gitignore 不存在。

要复制:

/ $ cd /tmp
/tmp $ mkdir projects
/tmp $ cd projects
/tmp/projects $ echo "*" > .gitignore
/tmp/projects $ git init
Initialized empty Git repository in /private/tmp/projects/.git/
/tmp/projects $ mkdir foo
/tmp/projects $ cd foo
/tmp/projects/foo $ git init
Initialized empty Git repository in /private/tmp/projects/foo/.git/
/tmp/projects/foo $ touch some_file
/tmp/projects/foo $ git status
On branch master

Initial commit

Untracked files:
  (use "git add <file>..." to include in what will be committed)

    some_file

nothing added to commit but untracked files present (use "git add" to track)