Ignore items by extension handles files/directories with no extension poorly

What steps will reproduce the problem?

1. Select multiple files, including a file without extensions (such as a directory).
2. Choose 'Add to ignore list', then chose 'Ignore X items by extension'.

What is the expected output? What do you see instead?

I expect selected directories or files without extensions to either be added by name or skipped.

Instead, .gitignore entries for the selected file extensions are added as expected, but a troubling entry is added for the selected directory or file without an extension, in which all files are set to ignore with the .gitignore entry of simply: /*

What version of TortoiseGit and Git are you using? On what operating system?

• TortoiseGit 2.8.0.0
• git version 2.20.1.windows.1
• Windows 10 Pro

Please provide any additional information below.

I noticed this by selecting a directory with several files with extensions, but I suspect including a file with no extension would behave similarly.

I'd expect the files/directories without extensions to be added by name, despite the chosen extension option, but this may be debatable.