Use case:

1. There are two galleries <gallery>FileA, FileB, FileC</gallery><gallery>FileD, FileE, FileF</gallery>
2. User want to merge the galleries, and remove 1-2 images and get: <gallery> FileB, FileD, FileE, FileF</gallery>

How it is currently done:

1. Double click on gallery
2. Since the gallery dialog doesn't tell the user the file names (not even in alt/title) user should use developer tools and using "Inspect element" figure out what are the file names (FileA, FileB, FileC) -
3. User should double click on the second gallery, and paste there the file names

There should be simple way to get the file names from gallery dialog without using browser's developer tool...