Slash prefix in gitignore

[dmpetrov]

$ dvc --version
0.21.2+22d38c.mod

$ mkdir so-dataset-posts
$ cd so-dataset-posts
$ git init
$ dvc init
$ git commit -m 'DVC init'
$ cp ../stackoverflow_small_xml/10K/Posts.xml.tgz .
$ dvc add Posts.xml.tgz
$ cat .gitignore
/Posts.xml.tgz

Why the file name has a slash prefix /?

[efiop]

Because without it the name is ambiguous and will match any file in any directory under the current one that is named Posts.xml.tgz, while we only need to ignore /Posts.xml.tgz(in the current directory).

[efiop]

Here is an example:

#!/bin/bash

set -e
set -x

rm -rf myrepo
mkdir myrepo
cd myrepo
git init

mkdir dir
echo tracked > dir/tracked
git add dir
git commit -m "foo"

echo file > file
echo file > dir/file

echo file > .gitignore

git status

echo /file > .gitignore

git status

+ rm -rf myrepo
+ mkdir myrepo
+ cd myrepo
+ git init
Initialized empty Git repository in /storage/git/dvc/myrepo/.git/
+ mkdir dir
+ echo tracked
+ git add dir
+ git commit -m foo
[master (root-commit) 256f86a] foo
 1 file changed, 1 insertion(+)
 create mode 100644 dir/tracked
+ echo file
+ echo file
+ echo file
+ git status
On branch master
Untracked files:
  (use "git add <file>..." to include in what will be committed)

        .gitignore

nothing added to commit but untracked files present (use "git add" to track)
+ echo /file
+ git status
On branch master
Untracked files:
  (use "git add <file>..." to include in what will be committed)

        .gitignore
        dir/file

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

[dmpetrov]

Got it. Not a bug.