in seed/util/preprocess.py [0:0]
def convert_th(self, el, text, convert_as_inline):
colspan = 1
if "colspan" in el.attrs:
try:
colspan = int(el["colspan"])
except ValueError:
colspan = 1 # Default to 1 if conversion fails
return " " + text.strip().replace("\n", " ") + " |" * colspan