Replace the Error thrown on an invalid unicode escape character with an IOException.
Replace the Error thrown on an invalid unicode escape character with an IOException.

blue-systems-group/project.maybe.polyglot,liujed/polyglot-eclipse,liujed/polyglot-eclipse,xcv58/polyglot,xcv58/polyglot,liujed/polyglot-eclipse,xcv58/polyglot,xcv58/polyglot,blue-systems-group/project.maybe.polyglot,blue-systems-group/project.maybe.polyglot,blue-systems-group/project.maybe.polyglot,liujed/polyglot-eclipse