In Python, `\s` also matches newlines.  This would cause newlines to be
consumed by the equal sign matcher, resulting in the next line being
considered as a value.

For instance, the following would be parsed as `[("FOO", "BAR=b")]`
instead of [("FOO", ""), ("BAR", "b")].

```bash
FOO=
BAR=b
```

Fixes theskumar#157.

bbc2 deleted the fix-empty-var-bug branch

johnbergvall pushed a commit to johnbergvall/python-dotenv that referenced this pull request

In Python, `\s` also matches newlines.  This would cause newlines to be
consumed by the equal sign matcher, resulting in the next line being
considered as a value.

For instance, the following would be parsed as `[("FOO", "BAR=b")]`
instead of [("FOO", ""), ("BAR", "b")].

```bash
FOO=
BAR=b
```

Fixes theskumar#157.