Add doc for compileall.compile_file
diff --git a/Doc/library/compileall.rst b/Doc/library/compileall.rst
index ac0feb7..d576696 100644
--- a/Doc/library/compileall.rst
+++ b/Doc/library/compileall.rst
@@ -1,4 +1,3 @@
-
:mod:`compileall` --- Byte-compile Python libraries
===================================================
@@ -50,14 +49,14 @@
Expand list with its content (file and directory names).
-.. versionadded:: 2.7
- The ``-i`` option.
+.. versionchanged:: 2.7
+ Added the ``-i`` option.
Public functions
----------------
-.. function:: compile_dir(dir[, maxlevels[, ddir[, force[, rx[, quiet]]]]])
+.. function:: compile_dir(dir[, maxlevels[, ddir[, force[, rx[, quiet]]]]])
Recursively descend the directory tree named by *dir*, compiling all :file:`.py`
files along the way. The *maxlevels* parameter is used to limit the depth of
@@ -72,6 +71,23 @@
If *quiet* is true, nothing is printed to the standard output in normal
operation.
+
+.. function:: compile_file(fullname[, ddir[, force[, rx[, quiet]]]])
+
+ Compile the file with path *fullname*. If *ddir* is given, it is used as the
+ base path from which the filename used in error messages will be generated.
+ If *force* is true, modules are re-compiled even if the timestamp is up to
+ date.
+
+ If *rx* is given, it specifies a regular expression which, if matched, will
+ prevent compilation; that expression is searched for in the full path.
+
+ If *quiet* is true, nothing is printed to the standard output in normal
+ operation.
+
+ .. versionadded:: 2.7
+
+
.. function:: compile_path([skip_curdir[, maxlevels[, force]]])
Byte-compile all the :file:`.py` files found along ``sys.path``. If