Subsequent numbers omitted from archive names

There appears to be a bug in BetterZip 1.8.3 in that subsequent numbers are omitted from the archive name within the save dialog. This happens only if the "Save As:" field in the save dialog is automatically populated based on a folder name or the name of the originally opened archive.

Here's an example:

If I drag a folder called "Example 1" to BetterZip and then hit save it will automatically fill in "Example" (notice the missing 1) as an archive name. The same is true when opening an archive such as "Example 1.zip" an then re-saving it in a different format via "Save As..."

This behavior does not surface in the following situations:

- Number is followed by letters ("Example 1 example" or "Example 1example")
- No preceding space ("Example1")
- Number in between brackets or other special characters ("Example [1]")

The number of digits does not seem to make a difference: "Example 12345" will also be omitted.

I also noticed that periods (".") are always omitted along with everything following them. So "Example.test" turns into "Example".

I should also add that manually changing the archive name in the save dialog will of course correct these issues on a case by case basis.