Piece Chains (2006)

I appreciate the history section in particular.

VS Code is known to use a Piece Tree (Piece Table represented as a balanced binary tree) and I thought AbiWord (which this article also mentions) was the first to use the data structure. This article points out that the Tweak editor and the MText interface in the Modula-3 programming language uses the same approach, meaning this variant of the data structure goes back even further than I knew.