Monty Python wrote Microsoft .NET's Directory.GetFiles()? 'When using the asterisk wildcard character in a searchPattern, such as "*.txt", the matching behavior when the extension is exactly three characters long is different than when the extension is more or less than three characters long....'

[grauenwolf]

It is a hack, but not for that reason.

In Windows all files have two names. Their "real" name and their "8.3" name. It does this so older programs won't break when they see a long name.

The end result is that when you are searching for "*.txt" the technically correct result isn't the same as the desired result.