Alert warning for read-only files
Observed with MuseScore 3.6.2 under Windows 7
If MuseScore opens a score file that is marked read-only for the O/S, we see no notice of this situation.
We can make any changes we wish in the score.
If we do Save, it is ineffectual. The only indication we get of this is that the "dirty" asterisk does not disappear.
If we have made changes and attempt to close the "dirty" file, we get the usual warning message. If we choose Save, we get a file box labeled Save As, essentially inviting us to save this file under a new name. This seems, and may be, helpful, but it may baffle the scorist who has no idea why this is happening.
It would be desirable, when a read-only file had been loaded, for there to be some visible notice. The scorist may have no idea of the status of the file, and might wish to react to that discovery before doing any more work.
It would perhaps also be desirable that, when we call Save on a read-only score, we get some notice that the save is not effectual. Perhaps here as well we should be offered a Save As box, but I'm not so sure about that. That might just baffle the unwitting scorist.