Is there a way to avoid wrapping in "special" words?

Hello!

By "special" I mean two situations like these I came across today:

1. At the end of a text line in block set text there is an e-mail address with a two-letter domain, such as .de. I changed it to .com and now it wraps after the dot. The mail address is considered as one word, but not by Indesign. This is also no hyphenation topic, so I couldn't find anything to make the word not wrap, except for tricks like lowering the character width or the tracking.

2. There is a single directory name like TEMP at the beginning of a text. In order to make it clearer that this is a directory, I changed it to \TEMP. Indesign would wrap the backslash into the previous line. This is also not hyphenation.

How to avoid the wrapping here? Is there a simple way?