jupyter-server
Unexpected text behavior for XmlText (possibly Text)
I think rust indexes strings by utf8 bytes, whereas python string indexing is character based So In Python:
s = "a😊b"
s[1:2]
Would give you "😊" (the emoji, a single "character").
In Rust: The emoji "😊" is encoded as 4 bytes in UTF-8. If you pass Python's indices (which refer to characters) directly to Rust, Rust will likely treat them as byte offsets, which can end up splitting a character in the middle, causing panics or data corruption.
This will break del s[1:2] or similar behavior in Python if the backing Rust code expects byte offsets.
Fixing this would likely be a breaking change, but it does seem like a bug and the Python ecosystem would expect delete range on the Python side to work based on character indexing as opposed to utf8 byte indexing
