Restrict the import function to files of a specified type

[mrweiler]

When using the import function to import .txt files, every (?) file within the specified directory is imported. Also files of different file types like .csv, .js and .jpg.

[Mirobit]

I assumed that people create a specific folder with only text files. I didn't want to limit the user regarding the file extension or the mime type.

But if there are valid scenarios where people can't be sure about the content of the folder, I will think about limiting file to the text/plain mime type or to the .txt extension.

[mrweiler]

I thought about that one again. I guess I find the label on the drop down menu irritating. It specifically says ".txt files". So my expectation is: import all files with a .txt extension within that directory. In contrast to import all files within that directory as text file.

[Mirobit]

I replaced .txt files with text files. I might add a mime type check later but I am not sure that is necessary. I don't see why there should be non text files in the folder.