accidentals on adjacent notes

Please explain - are there composers who use this notation ?
To me it’s not the same notes…

accidentals on adjacent notes.PNG

There was a brief fashion for this kind of thing in the early part of the 20th century: several of Les Six used these kinds of schemes for accidentals at one point or another.

Oh dear… - as if it wasn’t difficult enough… - glad it didn’t catch on :open_mouth:
What was Les Six ? (just answer if you have nothing else to do… :smiley:

As they say, “let me Google that for you” :slight_smile:

I use it.
Here for instance: