Ah ha! (One forehead slap later!) Thanks Michael!
FWIW the following alterations to the HTML language seems to do the trick, with (as yet) no perceived fallout....
foldingStartMarker = '(?x) (<(?i:head|body|table|thead|tbody|tfoot|tr|div|select|fieldset| style|script|ul|ol|form|dl)\b.*?> |<!--(?!.*--\s*>) |^<!--\ \#tminclude\ (?>.*?-->)$ |{{?(if|foreach|capture|literal|foreach|php|section|strip) |{\s*($|?>\s*$|//|/*(.**/\s*$|(?!.*?*/))) |^\s*/**$ # added for folding docblocks )'; foldingStopMarker = '(?x) (</(?i:head|body|table|thead|tbody|tfoot|tr|div|select|fieldset| style|script|ul|ol|form|dl)> |^(?!.*?<!--).*?--\s*> |^<!--\ end\ tminclude\ -->$ |{{?/(if|foreach|capture|literal|foreach|php|section|strip) |^[^{]*} |^\s**/$ # added for folding docblocks )';
Thanks.
R