Question Upload duplicate media

I've accidentally uploaded the same image twice. it's accepted. When viewing in Manage Media, it's given a gobbly-gook generic number. Instead would be helpful to have warning  that the image is already on file,

Have a look how gedcom and webtrees manage media and you will understand 

Not sure why gedcom and webtrees handling have impact on my request.  The feature - warning of duplicate or warning of no media selected -- is in kiwitrees (where I'm converting from)

So now you can learn, why that is not necessary in gedcom and webtrees.

Let's agree to disagree on this one.

webtrees and kiwitrees have their differences as well, as you have learnt.

You have the choice:
1. Make a point of each and every difference
2. Accept it is not necessarily worse, just a bit different

> Instead would be helpful to have warning that the image is already on file,

A warning, and then what?

The user uploads a file "grandpa.jpg".

The system says - filename in use - choose another.

The user renames it to "grandpa1.jpg".

The system says - filename in use - choose another.

The user renames it to "grandpa2.jpg".

The system says - filename in use - choose another.

The user gives up.

The current logic assumes the user wants to upload a file more than they want to specify a filename - and it lets them do that without losing any data or overwriting existing files.

The original motivation came from Ancestry, where all downloaded images used to have the same name - x.jpeg, and I got fed up with trying to think of unique names for thousands of documents.