Description of the Issue

Please: the icons and/or the names on the tabbar need to better indicate saved vs edited vs readonly state.

Please do not reject this out-of-hand. It's not just aesthetics (though that could be improved) or personal preference; it needs to be done. As mentioned in https://community.notepad-plus-plus.org/topic/19110/different-indicator-for-unsaved-tabs, certain varieties of color blindness make the saved/blue vs unsaved/red icon indistinguishable.

At the very minimum, the tabbar needs to use the *, just like the title bar use. But that's the least preferred. The best solution would be changing the icon on each, to three distinct and easily-recognizable icons.

I know there's #5666 still open, but this takes it farther.
I know PR #5890 was rejected because the orange color looked weird.
I know PR #5097 was rejected because "it looked different"

Instead of rejecting outright, please work with the Community to find an acceptable solution, because this is an issue of accessibility.

The point is to make them all look as different as possible, to make it easy for everyone (colorblind or not) to quickly recognize the difference between saved, edited, and readonly. Combing different icons with different colors is the best combination, which is better for everyone.

Doing something like Blue Disk (or Green Disk, or Green Checkmark if you are bold enough for not making tradition dictate an out-of-date icon -- who uses 3.5" floppies?!) for saved, Red Lock (or yellow or orange or whatever color doesn't look weird) for readonly, and Red Pencil for edited.

This would make it easier to distinguish, at a glance, for everyone.

If you don't like the exact suggestions, work with us to find alternatives that do work. I bet @SinghRajenM would be willing to implement whichever suggestion gets consensus and do a new PR, or someone could at least start from those PRs as a basis, and tweak it to match what's agreed upon.

If changing the icon is absolutely unacceptable (which seems strange, since the icon changes to a creepy eyeball when the file is in "monitoring (tail -f)" mode), then at the very minimum, implement three different states in the text of the tabbar: maybe * or (*) for edited and (x) or (ro) for readonly; or, if Unicode characters are allowed, 🔒 U+1F512 LOCK for readonly and ✎ U+270E LOWER RIGHT PENCIL (or one of the other pencil characters) for edited. But really, icons with different shapes is the best solution for everyone.