From a409f7c491647fe0c256c944d6fe4e9593d15760 Mon Sep 17 00:00:00 2001
From: Greg Ward <gward@python.net>
Date: Wed, 7 May 2003 01:20:58 +0000
Subject: SF #596434: tweak wordsep_re so the definition of an em-dash is
 stricter: specifically, "--" must be preceded by a limited set of characters,
 not by any non-whitespace character.

---
 Lib/textwrap.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/textwrap.py b/Lib/textwrap.py
index fdb95d7..b0c7042 100644
--- a/Lib/textwrap.py
+++ b/Lib/textwrap.py
@@ -75,7 +75,7 @@ class TextWrapper:
     # (after stripping out empty strings).
     wordsep_re = re.compile(r'(\s+|'                  # any whitespace
                             r'-*\w{2,}-(?=\w{2,})|'   # hyphenated words
-                            r'(?<=\S)-{2,}(?=\w))')   # em-dash
+                            r'(?<=[\w\!\"\'\&\.\,\?])-{2,}(?=\w))')   # em-dash
 
     # XXX will there be a locale-or-charset-aware version of
     # string.lowercase in 2.3?
-- 
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