Bar 100 is the last one on the page of A and, as it often happens, the slurs at the transition between the pages are written inaccurately. The slur in bar 100 reaches far beyond the notes, suggesting its continuation, yet in bar 101 there is no possible ending of this slur. Therefore, the versions of the editions in which the slur ends together with the last note in bar 100 may be considered to be justified. However, the logic of the musical course suggests that it is the missing ending of the slur in bar 101 that is inaccurate and not the overextended ending of the slur in bar 100 – cf. e.g. an analogous situations 4 bars further. Starting the slur in bar 101 from the beginning of the bar is a typical inaccuracy of GE1 (→FE→EE), corrected in GE2. (The slur of GE1 bears traces of corrections in print – one can see it was initially divided into a few parts. However, it does not mean that Chopin wanted to move the beginning of the slur – the aim of the proofreading was undoubtedly to combine the illogical fragments.)
Compare the passage in the sources»
category imprint: Graphic ambiguousness; Differences between sources
issues: Inaccuracies in GE, Inaccurate slurs in A, GE revisions, Corrected slurs of Op. 21 in GE1
notation: Slurs