diff --git a/PyTeX/format/tex_formatter.py b/PyTeX/format/tex_formatter.py
index b7625b8..a1b5b03 100644
--- a/PyTeX/format/tex_formatter.py
+++ b/PyTeX/format/tex_formatter.py
@@ -41,7 +41,7 @@ class LineStream:
         self._cached_lines[pos] = line
 
     def reserve_lines(self, num_lines):
-        for i in range(0, num_lines - len(self._cached_lines) - 1):
+        for i in range(0, num_lines - len(self._cached_lines)):
             self._cached_lines.append(
                 self._handle.readline()
             )
@@ -51,7 +51,9 @@ class LineStream:
 
     @property
     def exhausted(self) -> bool:
-        return self._file_exhausted & len(self._cached_lines) == 0
+        a = self._file_exhausted
+        b = len(self._cached_lines) == 0
+        return a & b
 
 
 class TexFormatter(PyTeXFormatter, ABC):
@@ -106,7 +108,7 @@ class TexFormatter(PyTeXFormatter, ABC):
 
     def _shipout_line(self):
         line = self.line_stream.pop_line().rstrip()
-        self.write_line(line)
+        self.write_line(line + '\n')
 
     def write_line(self, line: str):
         if self._output_file is None: