Neither in AI nor in A is the type of accent Chopin thought of here clear. The sign is visibly shorter in AI than in A, therefore, we interpret it as a short and long accent, respectively. This is how we give it in the main text. According to us, it is highly likely that a long accent was written also in the base text to FE, reproduced inaccurately as 
.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Long accents
notation: Articulation, Accents, Hairpins