Apply some of the review comments

Doc/library/re.rst

@@ -968,10 +968,10 @@ form.
 .. exception:: ReCompileError(msg, pattern=None, pos=None)
 
  Exception raised when a string passed to one of the functions here is not a
- valid regular expression (for example, it might contain unmatched parentheses)
- or when some other error occurs during compilation or matching. It is never an
- error if a string contains no match for a pattern. The `ReCompileError` instance has
- the following additional attributes:
+ valid regular expression (for example, it might contain unmatched
+ parentheses) or when some other error occurs during compilation or matching.
+ It is never an error if a string contains no match for a pattern. The
+ ``ReCompileError`` instance has the following additional attributes:
 
  .. attribute:: msg
 
@@ -997,7 +997,7 @@ form.
  Added additional attributes.
 
  .. versionchanged:: 3.9
- ReCompileError was originally named 'error'; the latter is kept as an alias for
+ ``ReCompileError`` was originally named ``error``; the latter is kept as an alias for
  backward compatibility.
 
 .. _re-objects:

Lib/idlelib/replace.py

@@ -118,7 +118,7 @@ def _replace_expand(self, m, repl):
  if self.engine.isre():
  try:
  new = m.expand(repl)
- except re.ReCompileError:
+ except re.error:
  self.engine.report_error(repl, 'Invalid Replace Expression')
  new = None
  else:

Lib/re.py

@@ -116,7 +116,7 @@
  is the default), and forbidden for bytes patterns.
 
 This module also defines exception 'ReCompileError', aliased to 'error' for
-backward compatibility..
+backward compatibility.
 
 """
 
@@ -179,7 +179,6 @@ def __repr__(self):
 globals().update(RegexFlag.__members__)
 
 # sre exception
-error = sre_compile.ReCompileError
 ReCompileError = error = sre_compile.ReCompileError
 
 # --------------------------------------------------------------------

Misc/NEWS.d/next/Library/2019-12-07-13-19-03.bpo-38981.kJrSbj.rst

@@ -1,3 +1,3 @@
-The ``re.error`` exception has been renamed to ``ReCompileError`` for
+The ``re.error`` exception has been renamed to :exc:`ReCompileError` for
 clarity and conformance with pep-8. A ``re.error`` alias has been kept for
 backward compatibility.

Modules/_xxtestfuzz/fuzzer.c

@@ -130,7 +130,7 @@ PyObject* sre_error_exception = NULL;
 int SRE_FLAG_DEBUG = 0;
 /* Called by LLVMFuzzerTestOneInput for initialization */
 static int init_sre_compile() {
- /* Import sre_compile.compile and sre.ReCompileError */
+ /* Import sre_compile.compile and sre_constants.ReCompileError */
  PyObject* sre_compile_module = PyImport_ImportModule("sre_compile");
  if (sre_compile_module == NULL) {
  return 0;