The Origin of [sh]

[Koen G]

Emma, do you mean it was like one would dot one's i's at the end of a long word as opposed to immediately after writing the i? Because in that case you could see whether there is more of a difference in longer words with sh near the beginning.

I'm not sure I understand what the implication could be though. Both diacritics and actual parts of glyphs can be applied after having written the whole word.