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authorMark Sapiro <mark@msapiro.net>2015-09-16 19:52:18 -0700
committerMark Sapiro <mark@msapiro.net>2015-09-16 19:52:18 -0700
commitd5a48ae6a27174e6d9ce925d63b749b77db54582 (patch)
tree8484fb5bd7e55c4d03b324c245c3c530aa7e57c9 /Mailman
parent6f9679030c1c2037a6a12555dbfe02445b012646 (diff)
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Subject prefixing could fail to collapse multiple 'Re:' in an incomming
message if they all came after the list's subject_prefix.
Diffstat (limited to 'Mailman')
-rwxr-xr-xMailman/Handlers/CookHeaders.py8
1 files changed, 7 insertions, 1 deletions
diff --git a/Mailman/Handlers/CookHeaders.py b/Mailman/Handlers/CookHeaders.py
index 25fda890..63e630cb 100755
--- a/Mailman/Handlers/CookHeaders.py
+++ b/Mailman/Handlers/CookHeaders.py
@@ -380,7 +380,13 @@ def prefix_subject(mlist, msg, msgdata):
else:
old_style = mm_cfg.OLD_STYLE_PREFIXING
subject = re.sub(prefix_pattern, '', subject)
- rematch = re.match('((RE|AW|SV|VS)\s*(\[\d+\])?\s*:\s*)+', subject, re.I)
+ # Previously the following re didn't have the first \s*. It would fail
+ # if the incoming Subject: was like '[prefix] Re: Re: Re:' because of the
+ # leading space after stripping the prefix. It is not known what MUA would
+ # create such a Subject:, but the issue was reported.
+ rematch = re.match(
+ '(\s*(RE|AW|SV|VS)\s*(\[\d+\])?\s*:\s*)+',
+ subject, re.I)
if rematch:
subject = subject[rematch.end():]
recolon = 'Re:'