When I compare a `dir` in DOSBox 0.74 against a `dir` from Windows 7 command prompt, the 8.3 filenames differ.

Long format (both drives and directories):

```
2012-07-30_abcdefg-abcde
2012-07-30_abcdefg-abcde.7z
2012-08-06_abcdefg-abcde
2012-08-06_abcdefg-abcde.7z
2012-10-22_IIS-LogFiles
2012-10-22_IIS-LogFiles.zip
2012-11-14_selective-abcde

```

DOSBox 0.74 (`dir`):

```
2012-0~1
2012-0~3
2012-1~1
2012-1~3
2012-0~2 7Z
2012-0~4 7Z
2012-1~2 ZIP

```

Windows 7 (`dir /x`):

```
2012-0~1
2012-0~1.7Z
2012-0~2
2012-0~2.7Z
2012-1~1
2012-1~1.ZIP
2012-1~2

```

so for instance if I'm passing in a path to DOSBox, sometimes this happens and whatever I'm trying to automate will fail. Why the difference, and can I change any settings to help DOSBox generate the correct shortnames?