how can I exclude files with NO extension?

[manu]

e.g. firefox cache files such as "B01839EC00CA24E2D38F07A02A44BFA973017AEB", they have no extension and I could find no way of excluding them.

thanks!

[void]

To exclude files with no extension from your search, include the following in your search:
.

To exclude files with no extension from your index:

• In Everything, from the Tools menu, click Options.
• Click the Exclude tab on the left.
• Change Exclude files to:
  regex:^[^.]*$
• Click OK.

[therube]

!ext:

Null extension.

!\cache2\

Or simply exclude Mozilla's /cache2/ directory.