refactor(get_command): spawn rustyline instance from main()

src/parser.rs

@@ -22,11 +22,7 @@ pub fn parse(file: String, input: String) -> Result<Vec<Command>, Vec<CommandPar
             crate::tokens::TokenData::EndOfFile => (),
         }
     }
-    if errs.is_empty() {
-        Ok(cmds)
-    } else {
-        Err(errs)
-    }
+    if errs.is_empty() { Ok(cmds) } else { Err(errs) }
 }
 
 #[cfg(test)]