Optimize regular expression for identifying line breaks in comments.

1 files changed, 4 insertions, 1 deletions

diff --git a/sqlparse/filters/others.py b/sqlparse/filters/others.py
index e0e1ca1..6905f2d 100644
--- a/sqlparse/filters/others.py
+++ b/sqlparse/filters/others.py
@@ -22,7 +22,10 @@ class StripCommentsFilter:
         def _get_insert_token(token):
             """Returns either a whitespace or the line breaks from token."""
             # See issue484 why line breaks should be preserved.
-            m = re.search(r'((\r\n|\r|\n)+) *$', token.value)
+            # Note: The actual value for a line break is replaced by \n
+            # in SerializerUnicode which will be executed in the
+            # postprocessing state.
+            m = re.search(r'((\r|\n)+) *$', token.value)
             if m is not None:
                 return sql.Token(T.Whitespace.Newline, m.groups()[0])
             else: