[PATCH] posix: shellquote do not require quoting for "+" (issue4818)

[timeless at mozdev.org]

# HG changeset patch
# User timeless at mozdev.org
# Date 1441379702 14400
#      Fri Sep 04 11:15:02 2015 -0400
# Node ID 3cf8adae162715009b09fc38145d5349160232be
# Parent  ea489d94e1dc1fc3dc1dcbef1c86c18c49605ed1
posix: shellquote do not require quoting for "+" (issue4818)

diff --git a/mercurial/posix.py b/mercurial/posix.py
--- a/mercurial/posix.py
+++ b/mercurial/posix.py
@@ -350,7 +350,7 @@
         return '"%s"' % s
     global _needsshellquote
     if _needsshellquote is None:
-        _needsshellquote = re.compile(r'[^a-zA-Z0-9._/-]').search
+        _needsshellquote = re.compile(r'[^a-zA-Z0-9._/+-]').search
     if s and not _needsshellquote(s):
         # "s" shouldn't have to be quoted
         return s