Unexpected behavior on indenting with 2 spaces

```Makefile
foo:
echo foo
bar:
echo bar
```

Run `bake foo` with above Bakefile:
```
+ Executing foo:
| foo
| bar
| foo
+ Done.
```

Reproduce the issue using the Bakefile shown and the `bake foo` command, then trace how the indented recipe lines are parsed and executed. Confirm the intended output for `foo` before changing behavior, and add or update coverage so the command no longer produces the unexpected output shown.

Written by the indexing model from the issue text.