Please add button to select by extension

[nkormanik]

Another similar program -- QTTabBar -- has an option, button, that has stopped working for some reason. I'm wondering if it could be added to Open-Shell-Menu.

The button is to select all files with the extension of the initially selected file(s).

Let's say a folder has lots of .png files. User simply selects a single .png file, and clicks the "Select All By Extension" button, and all .png files in the folder will be selected.

If the user initially selects a few files, say, a few .png and a few .jpg files, and clicks the "Select All By Extension" button, then all the .png and .jpg files in the folder will be selected.

It's a wonderful feature, and I'm so sorry it stopped working in QTTabBar. Hopefully Open-Shell-Menu can pick it up???

Thanks a million!!