--- a/src/luan/modules/IoLuan.java	Sat May 16 17:56:02 2020 -0600
+++ b/src/luan/modules/IoLuan.java	Sun May 17 14:29:33 2020 -0600
@@ -170,7 +170,7 @@
 
 		public String read_text() throws IOException, LuanException {
 			Reader in = reader();
-			String s = Utils.readAll(in);
+			String s = IoUtils.readAll(in);
 			return s;
 		}
 
@@ -232,7 +232,7 @@
 		}
 
 		@Override public String read_text() throws IOException {
-			return Utils.readAll(new InputStreamReader(System.in));
+			return IoUtils.readAll(new InputStreamReader(System.in));
 		}
 
 		@Override public byte[] read_binary() throws IOException {
@@ -567,20 +567,9 @@
 		}
 
 		public void wait_for()
-			throws IOException, LuanException
+			throws IOException
 		{
-			try {
-				proc.waitFor();
-			} catch(InterruptedException e) {
-				throw new RuntimeException(e);
-			}
-			int exitVal = proc.exitValue();
-			if( exitVal != 0 ) {
-				Reader err = new InputStreamReader(proc.getErrorStream());
-				String error = "exit value "+exitVal+" in: "+cmd+"\n"+Utils.readAll(err);
-				err.close();
-				throw new LuanException(error);
-			}
+			IoUtils.waitFor(proc);
 		}
 
 		@Override public String read_text() throws IOException, LuanException {