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Oops... gotta recall that older (and esp. SysV-based) tr's require the
'[]' method. This works fine with BSD tr's since it maps the [ to [
and the ] to ]. Cover all bases.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81713 13f79535-47bb-0310-9956-ffa450edef68