add more unit tests for lexing

src/cell.rs

@@ -20,7 +20,6 @@ use std::boxed::Box;
 
 
 // Container
-#[derive(Debug)]
 pub enum Ctr {
     SYMBOL(String),
     STRING(String),
@@ -35,7 +34,6 @@ pub enum Ctr {
  * Holds two Containers.
  * Basic building block for more complex data structures.
  */
-#[derive(Debug)]
 pub struct Cell {
     /* "Cell Address Register"
      *  Historical way of referring to the first value in a cell.

src/lex.rs

@@ -85,7 +85,8 @@ fn process(document: String) -> Result<Box<Cell>, String> {
                 needs_alloc = true;
                 // reset comment line status
                 if delim == '\n' {
-                    ign = false
+                    ign = false;
+                    continue;
                 }
 
                 // catch too many list end