commit 1ca66edbc50aa1b1e5d010f722e708756cce3214
author Serhiy Storchaka <storchaka@gmail.com> Mon Aug 19 22:59:31 2013 +0300
committer Serhiy Storchaka <storchaka@gmail.com> Mon Aug 19 22:59:31 2013 +0300
tree 4263beaa18ec70ef2cf3b0b37785251706f7f0f4
parent 9d96542b6d1f5c470a60f21d0d8b4ee3edcb17f9

Issue #18647: A regular expression in the doctest module rewritten so that
determined minimal width of repeated subexpression is >0 (an empty line was
not matched in any case).

Lib/doctest.py

diff --git a/Lib/doctest.py b/Lib/doctest.py
index 5dbd3d4..0b485f1 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -553,7 +553,7 @@
         # Want consists of any non-blank lines that do not start with PS1.
         (?P<want> (?:(?![ ]*$)    # Not a blank line
                      (?![ ]*>>>)  # Not a line starting with PS1
-                     .*$\n?       # But any other line
+                     .+$\n?       # But any other line
                   )*)
         ''', re.MULTILINE | re.VERBOSE)