@ -161,6 +161,7 @@ def str_fmt_heading(fmt):
#
#_str_fmt_heading_rx = None # only for development purposes
import re
global _str_fmt_heading_rx
if _str_fmt_heading_rx == None:
# Because of complicated regex, I verbosely write it out here:
_str_fmt_heading_rx = re.compile(r"""