--- a/src/luan/modules/Boot.luan	Thu Jul 24 17:03:21 2025 -0600
+++ b/src/luan/modules/Boot.luan	Thu Jul 24 22:04:08 2025 -0600
@@ -88,6 +88,11 @@
 	this.java = writer
 	this.write = writer.write
 	this.close = writer.close
+
+	function this.write_from(reader)
+		reader.java.writeTo(writer)
+	end
+
 	return this
 end
 

--- a/src/luan/modules/IoLuan.java	Thu Jul 24 17:03:21 2025 -0600
+++ b/src/luan/modules/IoLuan.java	Thu Jul 24 22:04:08 2025 -0600
@@ -216,6 +216,21 @@
 		public void set_charset(String charset) {
 			this.charset = charset;
 		}
+
+		public void writeTo(Object obj) throws IOException, LuanException {
+			if( obj instanceof OutputStream ) {
+				OutputStream out = (OutputStream)obj;
+				InputStream in = inputStream();
+				IoUtils.copyAll(in,out);
+				in.close();
+			} else if( obj instanceof Writer ) {
+				Writer out = (Writer)obj;
+				Reader in = reader();
+				IoUtils.copyAll(in,out);
+				in.close();
+			} else
+				throw new LuanException("invalid type: "+obj);
+		}
 	}
 
 	public static final LuanIn defaultStdin = new LuanIn() {