In commands, many places are artificially restricted to ASCII, e.g. team names and ID names can only contain ASCII characters. However, this is not technically justifiable. Even if the few lines in the picture were changed slightly, the problem would be solved.
E.G:
File: com/mojang/realmsclient/dto/UploadInfo.java
Line (original): private static final Pattern URI_SCHEMA_PATTERN = Pattern.compile("^[a-zA-Z][-a-zA-Z0-9+.]+:");
Line (improved): private static final Pattern URI_SCHEMA_PATTERN = Pattern.compile(.*);
Expectation: ID names with non-ASCII characters
Current: May only contain ASCII characters
Environment
Minecraft Java every edition
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