Report similar class/type for tileset #4159

I'm sorry but I have no idea what you are talking about in this issue. Could you describe the steps you're doing in Tiled that lead to the problem you're trying to solve? And maybe show a screenshot of the issue?

Ad to tile gid1 name class "name1" ad to gid2 name class "name2", maybe user want this but it's be good to resolve problem if accidentally is this same name for other gids. To prevent this type case in option can be turn on to alerting similar names.

Rather than alerts about similar names, might it not be more useful to have previously used names show up as suggestions like Custom Types are? Perhaps they could be listed in the class list dropdown, but after the defined classes, and/or styled differently.

Another possibility is an Project-level option to disable "custom" class names, requiring the name to be one of the defined custom types (typing the name should still be possible since that can be quicker than picking from the dropdown, just not committing the change if it's invalid).

Edit: Also, please don't say "gid" if you mean "tile id" or "tile". "gid" has a different meaning, and GIDs don't really exist in Tiled at runtime, they're a detail specific to certain file formats Tiled can use. When you add a class to a tile, you're modifying that tile.

Maybe list of id in log about similar as alerts can be ok, as other type log, eg: error, alert, info.