.gitignore过滤当前目录下的文件夹，不影响其他目录

最近在使用git时遇到一个问题，
push到远程机器上时某个log文件夹丢失了，本地查找是有的，git status也显示clean：

$ git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean

于是猜测可能是被.gitignore过滤了，打开之后果然，里面有一行：

log/

这一行本来是用来过滤当前目录的的log文件夹，结果其他地方的log文件夹也被过滤了，解决：
指明当前文件夹，改为：

/log

此时在git status就发现那个我想加入git的log文件夹出现了

$ git status
On branch master
Your branch is up to date with 'origin/master'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

        modified:   .gitignore

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

        src/main/java/sysu/newchain/consensus/pbft/msg/log/

no changes added to commit (use "git add" and/or "git commit -a")