Make sure all comas have a space afterwards
(,(?=\S)) yields the following positive results:
tlp065vpreTEI.xml: especially <m>azure</m> ,<m>lake</m> & those do not have body. But tlp077rpreTEI.xml: <ab><pro>Founders</pro>,to make the handles tlp142vpreTEI.xml: charcoals</m>,firstly lit