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b. 185

composition: (Op. 4), Sonata in C minor, Mvt IV

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In the main text we omit the cautionary  to a, present in all sources, which is totally unjustified here.

category imprint: Editorial revisions

issues: Cautionary accidentals , Last key signature sign

b. 185

composition: (Op. 4), Sonata in C minor, Mvt IV

Whole-bar slur in A (→GE)

Slur over quavers in FE, EE & IE

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In the main text we keep the A (→GE) slur, being a part of the irregular group marking. In the remaining editions it was transformed into an articulation slur, which can be considered an acceptable variant, as in later pieces Chopin would often change the initially written "rhythmic" slurs into articulation ones – cf., e.g. the Etude in C minor, Op. 10 No. 12, bars 52-62.
The same in bar 368.

category imprint: Differences between sources

issues: GE revisions , Triplet slurs

b. 186

composition: (Op. 4), Sonata in C minor, Mvt IV

Slur in A

No slur in GE (→FE,EE,IE)

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The missing slur is most probably due to an oversight by the engraver of GE.

category imprint: Differences between sources

issues: Errors in GE

b. 187-195

composition: (Op. 4), Sonata in C minor, Mvt IV

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In A in the ascending passages in bar 187, 193 and 195, Chopin wrote accidentals only in the first half of each of the bars. All the necessary accidentals further on in the passages were added in GE (→FE,EE,IE). 

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A

b. 188

composition: (Op. 4), Sonata in C minor, Mvt IV

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As in bar 5, in A the  restoring B (the bottom note of the chord in the middle of the bar) is missing. Chopin's patent mistake in this harmonic context was corrected in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , GE revisions , Errors of A