Most readers will know that the author of the 'Neo-Gallican' Preface authorised a couple of years ago by the CDF for use today (All Saints' Day; and also on a number of other days) was Laurant-Francois Boursier (1679-1749) , who died ... YES!! ... in the fair and bonnie parish of S Nicolas de Chardonnet.
He was a celebrated and condemned Jansenist.
Here follows a request for enlightenment. My enlightenment, that is.
Dom Gueranger, a vigorous compaigner for the unjansenised Roman Rite in the 1800s, wrote critically of Boursier (and about other fashionable Jansenists). Criticising the Preface now in favour in Rome, Gueranger remarked upon the rather Augustinian phrase eorum coronando merita, coronas dona tua. (See also S Prosper of Aquitaine) Rather sharply, or so it seems to me, Gueranger commented that, while this phrase had a sense Catholique, it also had a Jansenist sense.
Can anybody explain to me what the (snarl snarl) Jansenist sense was?